Can You Charge A Battery With Ac Current. A chemical battery is inherently DC and must have a net DC to current to charge it. They are analog so the voltage will clamp down to the battery voltage and it will only provide so much current so it works.
Just buy one of the cheap chargers from the auto parts shop. The general rule of thumb dictates that everything that runs off an AC adapter USB cable or battery relies on DC for we simply cannot store AC in batteries. Imagine that an alternating current AC is supplied directly to a rechargeable battery with the negative terminal of the AC source connected to the negative terminal of the battery and the positive terminal of the AC source connected to the positive terminal of the battery.
These applications require deep discharge batteries but they are rarely called.
If you put AC current through a battery it will not charge it and very likely damage it.
