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Power supply/Adapter Question Answered

Okay i've recently bpught an rc battery quick charger. the input on it just says 12-13.8v i do have a standard 110 to 12v @ 400mA Should the ma Matter? you can hook the battery up to a 12v battery in order to power it also. basicly i'm wanting to know if i could use my ac adaper to power it. Thanks in advance

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westfw
westfw

11 years ago

A quick charger with 12-13.8V input is designed to plug into your car's "auxiliary power socket" (aka cigarette lighter.) It is unfortunately unlikely (IMO) to remain "quick" if fed with only a 400mA wall wart; your aux power socket will supply 10+ amps. (there should be a spec somewhere for how much current the input needs.) (I've had generally bad luck powering car-powered things from AC. They tend to count on being able to draw "big amps.")

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Pie_eata
Pie_eata

Reply 11 years ago

Hmm what about a 12v dc 2 amp power supply?

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westfw
westfw

Reply 11 years ago

THat would be better. But some of the chargers I see out there consume even more than that. For instance, This hobbico dual charger will put 5A on each of two channels...)

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Pie_eata
Pie_eata

11 years ago

can you please dumb it down a little. i'm kinda newb @ this kinda stuff. basically what i'm asking is will my ac adapter be able to put out the same specs as a standard 12v car battery? thanks

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11010010110
11010010110

Reply 11 years ago

12 V is ok 400 mA limit may be too small its possible to estimate how much mA the charger needs from the V and mAH of the batteries it charges + how much time it takes to complete a full charge (from empty to full batteries) + the amount of batteries charged at a time

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11010010110
11010010110

11 years ago

the current can be estimated from the voltage / mAH of the batteries it charges and the time it takes to charge