High power energy - Tenergy's 12 pack Premium rechargeable batteries offers 1000mAh capacity. Generate long term energy savings by switching your household AAA batteries to rechargeable batteries. Professional performance - Premium NIMH AAA rechargeable battery are trusted by photographers to deliver faster refresh rate. Wide temperature range - AAA size rechargeable batteries are enhanced to deliver consistently high power performance, whether outdoors in -4°F or 122°F. Eco-friendly money saving - Tenergy Premium rechargeable NiMH AAA battery are reusable up to 1,200 times, and quickly pays for themselves after 10 uses. 12 Months warranty - Tenergy Premium 1.2V AAA battery are designed with an advanced no leak design, UL certified, and includes one year warranty.