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Coleman car Jumpstarter charger wallmart voltage ? Answered

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I have the circuit out of one of these , I see that it can charge a 12v 7.5 amp sla, what is the voltage of ne of these that wallmart connects to the charging circuit
model PMJ8160 Coleman
thanks, if no reply I will try a 12v 500 ma wallmart as this curcuit has a lm324n which boosts voltage to i think 13.5 etc.
thanks all.

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steveastroukBest Answer (author)2013-11-04

An LM324 can't boost any voltage ! Guess that the charger input is ~14-15V

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celalboz (author)steveastrouk2013-11-04

Thank you kindly for prompt reply, I will use several power diodes in series to reduce my laptop Brick to 15v for safe charging.
Thanks.
Al

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steveastrouk (author)celalboz2013-11-04

Measure the volts on the battery. It should be around 14 when its charging.

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celalboz (author)steveastrouk2013-11-05

thanks I've just tested the series of diodes with a laptop brick and got, 15 exactly and 1.5 amp on the input, I will see the charging voltage after returning from my winter bunker in two days. thanks for your fallow-up.

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AngelaD139 (author)2018-02-22

Can I use a 10volt 500mA charger for this battery charger

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zk171690479 (author)2013-11-04

I am also very interested on this

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