Lenmar R2GAAA4 AAA Ready-2-Go Batteries, 1.2 Volt Nickel Metal Hydride (NiMh), 850 mAh, Pack of Four

The Lenmar R2GAAA4 AAA Ready-2-Go Batteries are ready to use right out of the package. Lasts up to a 1000x longer than Alkaline Batteries. They hold charge at 85% for a year while not in use, avg. rechargeables need to be charged after 3 months.