At What Voltage Is A 6 Volt Battery Dead. You need a second 6V battery so you can use that charger. Too much charge and you could.
10-amp fast charge for 12-volt. A Multimeter is also the most reliable way to test a battery. The higher the AH the higher the alowable charge.
A brand new 3 volt battery say CR2032 for instance has about 33 volt.
50-amp rapid charge for 6- and 12-volt batteries. I would set the limit to 32v per cell that is 64v per pack or then just observe the mAh reading when charging and use a timer. This is called the open-cell or resting voltage of the battery. These come in a wide variety of Amp Hour sizes.
