I want to convert my LED lantern to a rechargeable. I want to use (2) 7.2 battery pack in Parallel to increase my reserve capacity, But the voltage jump to 8 volt. Can I just add a resistor and which one. Please help. Thanks.
Feeding the output of the 7.2 volt batteries through three diodes connected in series and rated at one amp will reduce the voltage to 6.0.Each diode will produce a voltage drop of .4 volts.