Bundle includes 12 rechargeable AA batteries, 8 rechargeable AAA batteries, and 4 rechargeable 9V batteries Tenergy Centura batteries offer low-self discharge and retains power when stored and unused Rechargeable up to 2,100 times without significant capacity lost Rechargeable aa batteries have 2,000mAh capacity, rechargeable AAA batteries have 800mAh capacity, rechargeable 9V have 200mAh Tenergy's AA and AAA batteries combo pack with 9V batteries are UL certified for safety and include 12 months warranty Tenergy Centura AA, AAA, C, and D rechargeable battery bundle is a great beginner's package to switch to rechargeable battery power. Switch over to rechargeable batteries and generate energy savings and reduced carbon footprint. Centura batteries are low self discharge and can be recharged 2,100 without significant capacity lose. Ideal for low drain electronics such as LED lights, flashlights, solar lights, night lights, calculators, remotes, controllers, garden lights, headsets, alarm-clocks and many more.