Save money and space in the landfill with these rechargeable NiMh AA batteries. They power up anything that runs on AA batteries, and can be recharged, on average, 300 to 500 times. Designed with Low Self Discharge, they can sit unused for up to 12 months before they start to lose their charge. Use the Guide 10 Plus Power Pack or the Guide 10 Adventure Kit for recharging (both not included). Four per pack.