Is it normal for a car battery to make a sizzle type noise while charging and after charging?

Question

i have my deep cycle car battery charging on a 8amp charger not connected to my car. It's up to 4amps on the charger power meter, and i just noticed it's sizzling? I unplugged it, but its still sizzling, any clue? The charger is supposed to shut off once the battery is fully charged. And is it safe to attach the battery to my car now, or should i wait until its done making noise?

Answer 1

deep cycle car battery? Odd application for one but anyhow if it's making noise that's not a good sign. If it's a sealed battery there isn't much you can do. If it's not, let it stop making noise then check the water level inside it might just be low and you're hearing boiling. Either way I wouldn't hook it up while it's still sizzling.



You can check to see what it shows for voltage with a multimeter hopefully it shows 12-13volts if it reads out under 10 the battery is probably shot and you'll need a new one.

Answer 2

The battery is moving the water inside, not to mention it's heating up and expelling vapor due to chemical reactions in the charging process.



Is it normal, well, sort of. Is it ok, sure. Just do it in a well ventilated area and make sure not to put any open flames or heat sources around it. The vapor is explosive.



Good luck!

Answer 3

No, It's a good sign that the battery is bad.

Answer 4

no way!! not good!!!