Without an adequate charge a car battery will be too weak to start your vehicle when you turn the ignition key. Now that we have verified that the battery is experiencing a parasitic draw we can move to exploring the different reasons and parts that can be pulling on your cars battery. The charging system starter motor or starter solenoid can be affected.
car battery drawing power
How to find a parasitic battery drain.
Car battery drawing power. How to diagnose a dead car battery. The charging system cannot top off your battery while driving if the battery connections have corroded. These parts can malfunction because theyre drawing excessive voltage to compensate for the lack of battery power. Itll receive power from the other battery and then charge up properly.
Corroded or loose battery cables. Adding a power inverter to a car truck or rv opens up a whole world of possibilities in terms of the types of electronics you can use on the road but nothing in life is free. Electric devices like timed and dimming dome lights can stay awake and produce excessive. When you have a weak battery your car ends up putting additional stress on healthy parts.
Most vehicles draw some battery current when the key is off thanks to the. All that power has to come from somewhere and if it happens to come from the starting battery that world of possibilities can collapse into a world of hurt with almost no warning. So you have a parasitic battery draw. That is because certain operations in the vehicle never are supposed to stop.
If you intend to use power tools for commercial use or any load of 200w for more than 1 hour regularly between battery recharging you should install an auxiliary battery to provide power to the inverter. Same concept with a weak battery. This battery should be a deep cycle type and sized to meet your run time expectations with the engine off. The battery puts out the most power when starting the car.
Part 2 of 3. Occasionally something is drawing power thats not of. When your car battery goes dead overnight usually either the battery is at the end of its life span or you left something on such as a light. Modern day autos always are drawing a small amount of power from the battery even when the car has been shut off.
Shutting off your vehicle before the alternator has a chance to recharge could explain why the battery continues dying or doesnt seem to last long.
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