Always Ready To Go! AC Delco Insta-Use (Pre-Charged ) Nickel Metal Hydride (Ni-MH) batteries employ the latest rechargeable battery technology that allows them to hold a charge longer than conventional Ni-MH batteries. A lower self-discharge rate means they are ready to go right out of the package. These batteries can be recharged hundreds of times reducing the carbon footprint of your electronic devices and saves you money. High 800mAh capacity outlasts alkalines at each charge. Monoprice brings you rechargeable NiMh batteries at a great price. There is no excuse not to use these on all your portable electronic devices.