At 600mAh, RAYOVAC® Rechargeable Batteries last up to twice as long as alkaline, and help keep disposable batteries out of landfills. They come pre-charged* and ready to use, plus you can recharge them up to 1,500 times—that's getting your money's worth. Recommended for high use devices. *For optimal performance, RAYOVAC® recommends charging batteries prior to using.