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Could you use rechargeable 4.7 volt 4200 mAh batteries? Obviously, making changes to the original circuit. Is it possible?
I was wondering. A 9v battery doesn't facilitate sufficient mAh. So, would it be possible to use other batteries e.g. 4200 mAh 3.7v. The battery is high drain rechargeable though. Would use of such batteries be feasible? Is it possible through changing the circuit?