Recharge Plus D batteries deliver reusable power for all of your high-drain tools and toys so you can reduce waste and save money. They come pre-charged in the pack and ready to use. Low-self discharge technology allows the batteries to stay charged longer so they are ready when you need to use them. Holding a charge up to two to three times than standard NiMH rechargeables when not in use, these 3000 mAh batteries are designed to hold power for up to one year. Recharge up to 300 times.