Number of batteries 4 C. Brand Amazon Basics Battery cell composition NiMH Compatible phone models All Recommended uses for product Rechargeable C (HR14) batteries to replace single use Alkaline C (LR14) batteries Unit count 4.0 count 4-Pack of C-cell rechargeable batteries; 5000mAh/Ni-MH Compatible with any device that takes a standard C-cell battery For use with any smart charger or universal Ni-MH charger that fits C batteries Batteries come pre-charged and can be used immediately An economical and convenient solution for powering for high-drain devices Charger not included