Is battery charger ok......

[Welchs101]

I am helping my neighbor replace/fix his kids electric vehicle. The problem, the battery is old and has been used for a few years. He tried charging the battery for an entire 24hrs but the battery did not charge up. We assumed it was the battery just being old . I found on ebay a place to get new batteries but before i buy them i wanted to measure the voltage coming out of the charger to before spending $60 on two new 6V/14AH batteries.

Enclosed are pics of the battery and charger.

I thikn the two batteries are actually in series when they are running the electric vehicle.

WHen i plug in the charger (see enclosed pic) and i measure between pins 1 and 3 i see ~ 12V. However, i dont see a voltage on any other pins. I can remeasure if you want.

any thoughts? do you think the charger is ok?

[Welchs101]

Re: Is battery charger ok......

ok so i think i figured it out.........i am enclosing a pic of the two batteries in series and how that relates to the charger pic i previously posted.

It makes sense now.

[Hondaman]

Re: Is battery charger ok......

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[Longbow]

Re: Is battery charger ok......

You have to figure out which pins on the charging plug connect to your series-connected batteries. To charge 2 series 6 volt batteries, the charger needs to put out at least 13 to 14 volts. Open circuit the charger may even read 15v. If not, the charger is bad.

First, measure the actual voltage on each battery separately, because one of them (or both) may be shorted. A shorted cell in a battery will show up as a an unusually low voltage (even when discharged). For example, a faulty 6v battery may show 3.5 volts. Even if one battery is faulty, you should replace them both together.