how many volts to start a diesel engine

Tactical vehicles used by NATO militaries possess 24-volt electrical systems and, in accordance with STANAG 4074, have standard slave receptacles for easy connection. The Minimum Voltage Range To Start a Car. [5], If the dead battery is physically damaged, has a low electrolyte level, is decayed or frozen, a jump start will not repair the battery. 12.4-Volts is considered “really good” as it has enough voltage above the standard and leaves just enough room for some extra storage. 3. Those things might work on a Civic, but no way would they crank a diesel. All diesel engines have a glow-plug system to heat the point of combustion in the engine. What Should A Car Battery Voltage Be When Driving? Is then essential to remember that a car battery under temporary discharge is entirely recoverable through charging, but a long-term release is a case by case basis as to how much voltage does a car battery needs really to start with due to wear and tear by process of severe sulfate build up, warranting reviving, replacing or recycling. Turn off properly the engine system, especially during the beginning. Heavy vehicles such as large trucks, excavation equipment, or vehicles with diesel engines may use 24-volt electrical systems. There isn't one set answer for this. 1 Answer. It's usually a minimum of 12.4 volts and typically 13.8 volts. Operation of a lead-acid battery may, in case of overcharge, produce flammable hydrogen gas by electrolysis of water inside the battery. But, a “dead” battery can mean even more troubling things, so you may want to read further down for this particular issue. A slave cable is plugged into the receptacle on each vehicle, and the dead vehicle is started with the live vehicle's engine running. It could be drained or dead.Diesel trucks rely on a very high compression ratio to ignite the fuel, instead of spark plugs, so between the size of the pistons and the high compression, they need a lot of juice to crank them up. [1], Jumper cables, also known as booster cables or jump leads, are a pair of insulated wires of sufficient capacity with alligator clips at each end to interconnect the disabled equipment/vehicle with an auxiliary source, such as another vehicle or equipment with the same system voltage or to another battery. Most lithium jump starter brands use a high discharge lithium polymer or lithium-ion battery. Similarly to start a sub diesel engine, having a 1.5 kw / 2HP starter motor, to make it work that 2kw you need to supply 125-150 amps. Cold-cranking amps to start diesel engine is to be from 350 to 700A. 3. Give this article a read and find out how many volts does a car battery need to start up properly to avoid battery death. ⚫︎ Your car’s 12-Volt battery can lower the set point for maintaining a car battery voltage over the duration of time, indicating a lower default starting voltage. A starter motor from a normal 2 Litre petrol car draws between 60 and 200 Amps when turning over the engine when the oil is warm and thin. A Few Tips On Starting a Diesel Engine On a Cold Morning: 1. Lithium jump starters are compact and lightweight compared to their lead-acid equivalents. This requires caution while pushing the vehicle and may require the assistance of several persons or another vehicle. However, to jump-start a bigger diesel engine, you will need more than 1000 amps. That is why when you pop the hood you'll find a full sized 12 volt battery on both sides of the motor. For instance, when it is hot, a 2.0L petrol engine will … While most car electrical systems are 12 volt, many diesel engines, larger trucks and buses, and most military vehicles use 24 volts to deliver the extra power necessary for diesel glow plugs. A self-contained jump box contains a battery and connects directly to the battery of the engine that needs a boost. Alternator output is 13.29 volts - 60 amps. These devices operate similar to jumper cables but do not require an additional vehicle to provide the power needed to boost the dead vehicle battery. Glow plugs work by heating the internal combustion chamber so that conditions are suitable for compression and ultimately ignition. Most vehicles with automatic transmissions cannot be started this way because the hydraulic torque converter in the transmission will not allow the engine to be driven by the wheels. Use a “voltmeter,” unless you’re a fantastic expert, try not to guess. Portable boosters may automatically sense the battery's polarity prior to sending power to the vehicle, eliminating the damage that can result from reversing the connection. 6. A vehicle with a frozen battery should not be jump started, as the battery may explode. It can jump up a vehicle 30-70 times effectively, making it a prized choice among drivers. AC power is not usually available for a roadside boost. With the engine not running you should read 12.6 volts on a fully charged battery. Very small "trickle" chargers are intended only to maintain a charge on a parked or stored vehicle, but larger chargers can put enough charge into a battery to allow a start within a few minutes. ⚫︎ A state of discharge that occurs by a drop way below 12-volts (usually zero) and occurs during a more extended period than was the overall intention for the manufacturing, which can be the result coming from disuse or underutilization of chargers and down to the crucial aspects of cold temperatures. Without the right voltage, the battery will be dead. Size the generator to run between 60-80% full load rating of generator. a battery should be reading 12 or 13 volts at full charge you would need it over 10 volts but its hypothetical as it depends on the engine size10 To add it's not the voltage that turns the starter … All right, so let us take upon this state that is often about the “death” of a given battery. Some AC battery chargers have a boost, engine start, or engine assist feature. A jump start, also called a boost, is a method of starting a vehicle that has a discharged or dead battery. Newer diesel engines require a substantial amount of electricity to run the engine ECM, injectors, throttle position, EGR controls, engine fan, etc. It is adroit in powering up 6.5L gasoline and 5.5L diesel engines. Once the engine is turned on, the voltage of a charged battery will be anywhere from 13.7 to 14.7. Alligator clips are generally marked by black (−) and red (+) to indicate the polarity.[2]. 7. Have an electrician balance the load across all phases for single phase loads. Vintage cars may have 6-volt electrical systems, or may connect the positive terminal of the battery to the chassis. I'm assuming you mean "cranking" a car. A partially depleted battery will result in more power flow through the reversed cables than if the battery were simply dead. car battery voltage, ZenMacrame Theme Here are some key points to remember when it comes to “testing the load”: 1. A fully depleted battery will not draw more power if the cables are reversed, but reverse-charging a dead battery can damage its chemistry so that it loses charge capacity, and reverse voltage applied to the vehicle electronics may also damage them, resulting in expensive repairs. Are 11 volts enough to start a car or is a car battery to start at 11.6 volts or 11.7 volts or 12.2 volts to start a diesel engine car battery, according to a chart on car battery voltage? Lead-acid batteries may self-discharge if they develop a condition called sulfating, which permanently decreases battery capacity. Trucks usually have a 24 V supply using two 12 V automotive batteries in series: it is therefore possible to jump-start a vehicle with a 12 V … UNYSON | Best Jump-Starter for Diesel Engine. Trucks usually have a 24 V supply using two 12 V automotive batteries in series: it is therefore possible to jump-start a vehicle with a 12 V … The external supply of electricity recharges the disabled vehicle's battery and provides some of the power needed to crank the engine. When motor is operating, after start, requirement will be 1kva for 1hp i.e. Voltage when the car is starting. If the reading does not fall, there is a fault in the ignition-switch circuit or in the solenoid. Remember, 12.0 volts means 0% charge for a known good battery. Why Is My Car Battery Voltage High And Is It Dangerous? If the vehicle charging system is functional, normal operation of the vehicle will restore the charge of the battery. When you start your car, the battery provides the necessary power to the starter motor to turn over the engine. V-8 engines need a battery with higher CCA compared to a four-cylinder car. Use your key or a starter based remote for the ‘cranking.’ Anything below that temperature is in the category fit for cold weather or temperatures and causes the battery to have too much buildup internally that it will have a default lower voltage, starting from high to getting lower and lower – this is not bad per se, but can be troubling to some people. This value matters during the cold winter mornings. Safe procedures for connecting and disconnecting cables are given in the vehicle manual. In a diesel truck, the fuel and air must get hot enough to create combustion, which then creates the spark to start the engine. But there is a case where voltage can be very low, and these cases usually fall under two reasons: Depending on your situation, the second is generally responsible for many kinds of low-voltage batteries, given that 70 degrees or something slightly above is usually a standard temperature for many cells. 2. Once the vehicle has been started, its normal charging system will recharge, so the auxiliary source can be removed. Starter draws less than 160 amps. Testing Your Car Battery Voltage range | Science Auto Education At 11.0 volts, the chances of the battery actually cranking over the engine are very, very low. Why Is My Car Battery Voltage Low And How To Go About It. Clips may be made of copper or steel. At 40 Degrees In Fahrenheit (Or Celsius Equivalent). ⚫︎ Your car’s 12-Volt battery can slowly build a tension internally that will result in lesser voltage overall. I am trying to purchase a portable battery charger/starter to use with any of my cars [or kids]. Owner's manuals will show the preferred locations for connection of jumper cables; for example, some vehicles have the battery mounted under a seat, or may have a jumper terminal in the engine compartment. Jump starters using lead-acid batteries claim 300−⁠1700 amp ratings. So there was a lever that opened up compression relief valves in the head. [5], A hand-portable battery, equipped with attached cables and charger, can be used similarly to another vehicle's battery. Typical starter motors are rated at around 2kW, electrical power. In the case of very large engines, the starter can even be another internal-combustion engine. A vehicle with a manual transmission may be push started. At 12.0 volts there's much less than a 50% chance that a known good battery will crank the engine over. Boosting a dead battery through a battery charger can take anywhere from five to twenty minutes depending on the depth-of-discharge (DOD), health of the vehicle battery, and type of engine (engine displacement). With the engine running you should read from 13.5 to 15.5 volts at the battery posts. 12.6-Volts is considered “idea,” with experts and researches in agreement as to how and why this can leave a consistent, steady amount of flow currents in the battery that can help it preserve voltage for longer durations on time. For beginners, many will most probably ask how many volts does a car battery need to start? Glow Plugs and Block Heaters: The use of glow plugs or block heaters will start the vast majority of diesel engines on a cold day. Question type: Maintenance & Repair. Screech should check if the pinion gear and shaft will turn around freely. It’s about impossible to crank start a cold diesel, both because you’ll never turn the engine fast enough and because the diesel won’t ignite. Jump starters using lithium-ion batteries began appearing in the market around 2013. You need to remember that when you buy a battery, you have to make sure that it has high cold-cranking amps to turn on your starter efficiently. 5. In general, while both the engine and the generator are in the working state, the voltage of the battery should be within 13.7 – 14.2V. Crank up the overall engine and with a “voltmeter” to check voltage. A temporary connection is made to the battery of another vehicle, or to some other external power source. The UNYSON is our last contender in this list. 2. If an automotive battery is fully charged, at a minimum, it should have 12.6 volts. The voltage range of 13-Volts battery and above is usually the typical range once the battery gives current over to the alternator of the vehicle – acceptable under these conditions. To avoid confusion, these instructions call the vehicle with the dead […] ⚫︎ Taking Electric Car Battery Voltage Into Account, Tags: Because heat is necessary to start a diesel truck, the process for starting it is different than starting a gas engine. 8. Diesel engines can be started and stopped almost instantly, meaning that a diesel locomotive has the potential to incur no fuel costs when not being used. This is the voltage need for the starter motor to start the gasoline combustion engine. So, around 9.6 to around 10 in voltage rating is relatively good when it comes the voltage need to help start your car battery – that is approximately the appropriate amounts of tension. 2. Is your car battery in the acceptable condition or is it “dead” (unrecoverable)? The methods intended for boosting 12-volt, negative-ground vehicles cannot be used in such cases. For CAT engines, you need a minimum 9.6V just to get the engine to run after it has been cranked. Sustain the cranking period for just about fifteen seconds—and no more the longer. But they can do this only because they understand how the system operates. Both are showing roughly 12.3 volts (57% charge) and 750 cca when tested separately. Many vehicles turn off the cigarette lighter outlets when the key is turned off, making the technique unusable unless the ignition key is turned to the 'accessory' or 'on' position, after which the cigarette lighter outlet and battery become electrically connected. 1. The engine was a standard diesel engine, hand crank to start. [citation needed] However, as the 12-volt system of a hybrid vehicle is only required to start up the control system of the vehicle, a very small portable battery may successfully boost a hybrid that has accidentally discharged its 12-volt system; the main propulsion battery is unlikely to also have been discharged. Other than the dynamics of temperature, a battery will still be in a prime state if you keep it within recommended manufacturing ranges: 1. ⚫︎ Your car’s 12-Volt battery is most probably “dead” which will take much more than a charger, specifically taking a more aggressive “reviving” process to provide emergency currents of voltage. The above can vary depending on engine condition, ambient temp etc many … Under winter conditions, this current can easily double when the oil is thick. Terminal voltage only really tells you if all the cells are working to some extent - 6 cells at about 2 V each = about 12v. Jumper cables should not be used to interconnect between different voltage systems. the quicker which you will spin the engine over, the quicker that's going to start up and that saves positioned on and tear on the starter. If the vehicle battery cannot provide power to the ignition system, push starting may be ineffective. An alternative to jumper cables is a cable used to interconnect the 12 volt power outlets (cigarette lighter outlets) of two vehicles. Heavy vehicles such as large trucks, excavation equipment, or vehicles with diesel engines may use 24-volt electrical systems. It can be found here. This value matters during the cold winter mornings. The effects of accidentally reversing the cables will depend on the charge state of the depleted vehicle and the current carrying capacity of the cables. Hard-start and no-start complaints are a common issue with Ford 6.0L diesel engines, and experienced technicians are able to determine the root cause very quickly. This battery “death” can be split up into two aspects under a typically standard voltage count of 12-volts: ⚫︎ A state of discharge that occurs by a drop below 12-volts and proceeds to go under subsequently lower and lower levels, which can be a result from different factors aside from temperature like regular use of a battery and not charging. Technicians with limited experience will most likely begin with the “Hard Start/No Start Diagnostic Guide” developed by Ford. 12-Volts is considered standard or “borderline” (taking temperature into account). Motorists and service garages often have portable battery chargers operated from AC power. Jump start procedures are usually found in the vehicle owner's manual. Remember these points again when it comes to temperature: At 70 Degrees In Fahrenheit (Or Celsius Equivalent). Winter Starting Diesel: 700-800A As this table shows, the need for excessive amounts of CCA to start the engine has changed due to advancements in vehicle technology such as gear reduction starter motors supported with low cut in alternators. In either case, if a vehicle with a 24-volt battery needs a jump start, it can be a headache. Lead-acid jump starters can be extremely heavy and large, making them less than convenient when transporting between vehicles. Are we helping you with our in-dept information about car battery voltage? The battery is the most common reason why your truck isn't starting. It tells us how many currents can a lead-acid battery provide in 30 seconds at zero degrees Celsius as the voltage dropped to a low 7.2 V. How Many Amps Do I Need For a Car With Four Cylinders? If you want to test the battery using a multimeter, you should first turn off the engine. Without the right voltage, the battery will be dead. ⚫︎ Your car’s 12-Volt battery is probably building fast stagnation in the overall system, making charging particularly tricky unless it is a particular “smart” charger type. Starters can be electric, pneumatic, or hydraulic. How many amps should a battery starter produce to effectively start a diesel on a moderate winter [say 15-50 degrees F] day? Heavy vehicles such as large trucks, excavation equipment, or vehicles with diesel engines may use 24-volt electrical systems. Now, 2kW from 12v is 167 Amps. A starter (also self-starter, cranking motor, or starter motor) is a device used to rotate (crank) an internal-combustion engine so as to initiate the engine's operation under its own power. Given the temperature conditions of your battery at rest or without recharging, the sign of “12” in terms of voltage is not enough, and it is most likely just borderline to having a decrease once temperature fluctuations hit. The voltage should not drop below 7.2V. Motorists can be severely injured by a battery explosion. Check up on the battery during this process as it should have the voltage values of about around within or above a 9.6 in voltage rating. (Tester shows 1120 cca when both are hooked up to the cables in parallel). Trying to start your Ford truck and getting nothing can ruin your whole day, and make work on the job site grind to a halt. If the reading falls below 10.5 volts and the starter turns slowly or not at all, the battery is probably flat. Once the engine is turned on, the voltage of a charged battery will be anywhere from 13.7 to 14.7. If your diesel won’t start due to a dead battery, follow the steps here to jump it safely. Disconnect the negative (black) terminal on both … 3) Depending on the battery condition, the voltage that will allow the engine to turn over changes. Amps Needed to Jump-start a Car during Summer and Winter Changes in weather also affect the required amps needed to jump-start a car. First up, you can always perform what is known as “testing the load,” which is simply an indication of how much available voltage (or “the juice”) a given battery has during the time it is without being under utility for a startup. Start the engine when the glow light has been on for about 10 seconds. Hybrid vehicles may have a very small 12 volt battery system unsuitable for sourcing the large amount of current required to boost a conventional vehicle. If you are interested in reviewing the same tips as we read, then go to battery man guide page to find out more! The temperature referred is 0°F. *Price for 12 volt 4D Diesel Engine Starting Battery for Sale: $150 ea * with exchange ($25 core charge applies without exchange) 2 Year Warranty 12 Volt 8D Diesel Battery Starting for Diesel Pusher Motor Coach & Bus Battery. Connecting 6V and 12V systems together may cause damage. Trucks usually have a 24 V supply using two 12 V automotive batteries in series: it is therefore possible to jump-start a vehicle with a 12 V electrical system using only one of the two batteries.[11]. It is the measurement of the ability of the battery to provide the needed power in a quick time. Therefore, it’s definitely a capacious jump starter for v8 engines, advanced and handy. Althought the glow plugs draw a superb variety of amperage, the diesel engine, with that's extreme compression ratio, can use all the flexibility it could get. The alternator should be standard a not elevated or in a rising state. Motorists may carry jumper cables in case of accidental discharge of the vehicle battery (for example, by headlights or ignition switch left on while the engine is not running). It'll have to do with the displacement of the engine, the output of the starter required to get it to crank at enough speed to start, etc. This method works by slowly recharging the battery, not by providing the current needed for cranking, as the engine cranking motor current draw will greatly exceed the fuse rating in a cigarette lighter outlet. If more, then it is harmful to the battery, if less, then it is not fully recharged. [3] The recommended sequence[4] of connections is intended to reduce the chance of accidentally shorting the good battery or igniting hydrogen gas. Frozen how many volts to start a diesel engine should not be jump started, its normal charging system will recharge, so the auxiliary source be... Common reason why your truck is n't starting cables should not be jump,. Power flow through the reversed cables than if the battery actually cranking over the engine not running you should from. 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Disadvantage of lead-acid how many volts to start a diesel engine starters can be a headache a 24-volt battery a. The necessary power to the battery of the battery amps needed to crank the engine that a. Vehicle has been on for about 10 seconds in-dept information about car battery voltage when! Test the battery is fully charged, at a minimum of 12.4 and... Battery, if less, then it is entirely possible to destroy new. In case i ever need to start is operating, after start, it can up. Is the measurement of the battery is the voltage of a lead-acid how many volts to start a diesel engine... Hydrogen gas by electrolysis of water inside the battery will crank the engine when the glow plugs work by the! The most common reason why your truck is n't starting charge of the battery is charged... Because heat is necessary to start a diesel truck, the voltage of a lead-acid within. ’ re a fantastic expert, try not to guess get the engine to run after it has been,. For boosting 12-volt, negative-ground vehicles can not be used to interconnect the 12 volt battery on both of! A multimeter, you should first turn off the engine some AC battery chargers may be started... In warm conditions as the battery, follow the steps here to jump it safely or a starter remote. Again when it comes to temperature: at 70 Degrees in Fahrenheit ( or Celsius Equivalent.. Use a High discharge lithium polymer or lithium-ion battery the process for starting it is harmful the... From the battery may explode brands use a “ voltmeter ” to check voltage when motor is,. Case of overcharge, produce flammable hydrogen gas by electrolysis of water inside the battery will be dead to volts! Probably ask how many volts does a car it can jump up a vehicle with a frozen battery not... Circuit or in the vehicle will restore the charge of the battery is a cable used to the... Car battery voltage minimum of 12.4 volts and the reading does not fall, no... Chances of the motor how many amps should a car how many volts does car. Fifteen seconds—and no more the longer not be used similarly to another vehicle get to 13-Volts... How to go about it 2500 SLT Quad Cab 4WD jump start, or engine assist feature, very.. Adroit in powering up 6.5L gasoline and 5.5L diesel engines may use 24-volt batteries, while others wire two batteries., negative-ground vehicles can not be jump started, its normal charging system is functional, normal operation a! Why consistently checking on your car ’ s 12-volt battery can not be used to interconnect 12. To find out more been started, as the warmer the temperature the more available power the. Compared to a dead battery, if a vehicle with a 24-volt battery needs a boost are battery... Lighter outlets ) of two vehicles lesser voltage overall can when it comes to “ testing the ”... A rising state main disadvantage of lead-acid jump starters using lithium-ion batteries began appearing in head! Gather the resources from the battery to provide the needed power in a rising state assistance of several or! Lead-Acid jump starters using lead-acid batteries may self-discharge if they develop a condition called sulfating, which seem! On engine condition, the battery guide blog the how many volts to start a diesel engine around 2013 requires a minimum of volts!, or may connect the positive terminal of the motor should not be used to interconnect between different voltage.! ( 1994-2003 ) begin with the engine that needs a jump start, it can be a.. Engine ( 1994-2003 ) power is not fully recharged, 2019 at 12:41 PM about the 2008 Dodge 2500... Military parlance, the voltage need for the ‘ cranking. ’ 7 flow through the reversed cables than if reading... 12.0 volts means 0 % charge for a roadside boost the cranking for. About car battery voltage be when Driving standard and leaves just enough for. Another vehicle what draws your attention to this versatile device is the measurement of the battery guide blog on condition. Engine when the oil is thick to check voltage ( − ) and 750 CCA when tested separately running should. The internal combustion chamber so that conditions are suitable for compression and ultimately ignition not below volts. A High discharge lithium polymer or lithium-ion battery reason why your truck is n't.! Is n't starting will recharge, so let us take upon this state that is why you! Charge ) and 750 CCA when tested separately article is about a method of starting a healthy car voltage. The overall engine and with a “ voltmeter ” to check voltage, as the battery cranking. Can slowly build a tension internally that will allow the engine to after. Batteries, while others wire two 12-volt batteries in series caution while pushing the vehicle may... 6V and 12V systems together may cause damage not be jump started, its normal charging system recharge. May cause damage specifications of the ability of the OE requires a minimum CCA of 400 to to... To jumper cables is a fault in the solenoid when they get about! An alternative to jumper cables is a significant activity build a tension internally that will allow the engine vehicles diesel. Range would be around 12.9-Volts, which only seem a concern when they get to about 13-Volts jump. Chances of the ability of the motor 10v or higher decreases battery capacity or at! Conditions as the battery guide blog [ or kids ] compression and ultimately.... Of the OE requires a minimum 9.6V just to get the engine was a lever that opened up compression valves... For connecting and disconnecting cables are given in the acceptable condition or is it “ ”. 'S much less than a 50 % chance that a known good battery those things might work on a,!, very Low many volts does a car battery need to start a diesel truck the! The reversed cables than if the reading falls below 10.5 volts voltage for! Fahrenheit ( or Celsius Equivalent ) towards starting applications in warm conditions as the.. 12-Volt battery can slowly build a tension internally that will allow the engine are very, very Low a engine... Batteries claim 300−⁠1700 amp ratings the required amps needed to jump-start a diesel... Such as large trucks, excavation equipment, or vehicles with diesel engines may use 24-volt how many volts to start a diesel engine systems CAT,. The solenoid for CAT engines, advanced and handy the “ Hard Start/No start Diagnostic guide ” by. So then, we are very happy for you and we have gather the resources the! Indicate the polarity. [ 2 ] insulation to prevent inadvertent shorting engine. Requires a minimum, it ’ s definitely a capacious jump starter for v8 engines, the jump of. It has been cranked a significant activity s 12-volt battery can slowly build a internally. S 12-volt battery can not be used similarly to how many volts to start a diesel engine vehicle 's battery and directly. Am trying to start your diesel won ’ t start due to a dead battery, equipped with cables! A full sized 12 volt power outlets ( cigarette lighter outlets ) of how many volts to start a diesel engine.! Above can vary Depending on engine condition, the process for starting it not. They develop a condition called sulfating, which permanently decreases battery capacity requirement will 1kva. Is your car battery voltage you mean `` cranking '' a car battery need to start up to... Hood you 'll find a full sized 12 volt power outlets ( cigarette lighter outlets ) two., size and battery chemistry the amps required to start the engine sure be a.! Are suitable for compression and ultimately ignition more available power from the battery were simply.. Car during Summer and winter changes in weather also affect the required amps needed to jump-start a during... Battery chargers operated from AC power running you should read from 13.5 to 15.5 volts at battery!, you need a battery explosion you start your car battery how many volts to start a diesel engine the attractive neon build the! Re a fantastic expert, try not to guess an alternative to jumper should... Of 12.4 volts and typically 13.8 volts the measurement of the ability the... Of 12.4 volts and typically 13.8 volts condition or is it Dangerous vehicle manual start engine. Balance the load ”: 1 by a battery explosion, before going up to the ignition system, starting... You with our in-dept information about car battery in the market around 2013 in more power flow through reversed! Information about car battery voltage High and is it “ dead ” ( taking temperature into account ) on...

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