This battery bundle pairs advanced Panasonic eneloop pro rechargeable AA batteries with standard eneloop rechargeable AAA batteries to power your devices. The bundle includes 4 eneloop pro high capacity AA batteries that can be recharged up to 500 times. These AA batteries deliver a long-lasting 2600mAh typical capacity and maintain 85% of their charge for up to 1 year when stored. An advanced 4-battery charger with individual cell charging is included to perfectly recharge any combination of AA or AAA batteries. Also included are 8 standard eneloop AAA rechargeable batteries that can be recharged up to 2100 times. They deliver 800mAh typical capacity and maintain 70% charge for 10 years when stored. Both the pro AA and standard AAA eneloop batteries arrive pre-charged by solar power and ready to use out of the package. They perform in extreme temperatures down to -4 degrees Fahrenheit. With both high capacity AA and standard AAA batteries, plus an advanced charger, this bundle provides reliable, long-lasting power across hundreds of household devices and electronic gadgets.