Stack Exchange Network

Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Questions tagged [battery-drain]

A loss of electrochemical potential between positive and negative terminals a car's battery, creating a loss of power, sometimes to the point of being unable to start the vehicle.

6
votes
1answer
4k views

What would cause a slow drain of a battery?

Have a 2002 Toyota Camry, I got a switch to disconnect the battery, but before that the battery would slowly drain if you left the car for about a week. The solution is fine for now, but how would I ...
6
votes
4answers
32k views

Car battery won't charge above 50%

I had a problem starting my car after not driving it for two weeks. After charging the battery with a CTEK trickle charger via the cigarette lighter socket, the car started fine. I had my car battery ...
3
votes
2answers
523 views

What are “normal” battery recharge needs for modern cars?

I just bought a brand new car (Honda Accord Touring 2017). Its battery recharge characteristics are: - loses 1/3 of its charge in 4 days (if the car is resting. See test attached) - loses 1/3 or its ...
3
votes
1answer
615 views

Why won't my car even crank?

While inspecting the wires under the hood of my 1995 Camry LE (v6) I noticed that a wire ending at my alternator was loose. Note that before I disconnected anything, my car would start fine... So I ...
1
vote
2answers
65 views

Device that prevents vehicle from draining accessory batteries?

Not exactly sure if the device / component or setup I'm asking about even exists. But, here is my naive question (I am bad with electrical in general): Is there something built into modern vehicle ...