Minelab supply the F3 COMPACT and the F3Ci metal detectors with a set of (4) batteries. Customers have the choice of single use alkaline batteries or rechargeable (NiMh) batteries.
Minelab’s C cell rechargeable batteries are available as an accessory.
This battery is a C cell Nickel Metal Hydride Cylindrical Cell Battery with a nominal voltage of 1.2 volts and a capacity of 5,000mAh (5 Amp hours).