Includes 8 rechargeable AAA batteries and compatible TN477U fast charger 1.2V AAA batteries rechargeable are 1000mAh capacity Tenergy's AAA rechargeable batteries are standard size and can be easily switched with any single-use AAA battery TN477U LED charger is compatible with both AA and AAA rechargeable NiMH batteries Fast charger is powered by a micro USB port, and can be recharged without an AC outlet Certified by FCC, CE, CEC and includes built-in protections against short-circuits and reverse polarity. Charger includes Tenergy’s 12 months manufacturer warranty Tenergy's TN477U fast charger bundle with 8 AAA rechargeable batteries, includes everything a beginner needs to switch over from alkaline batteries to rechargeable. Rechargeable NiMH batteries are the ideal capacity for everyday home electronics. The bundled charger is intuitive and uses LED lights to signal when the batteries are fully recharged.