<p>The new SEC-MQN064N 4-AA eneloop battery pack with AC charger utilizes SANYO™s advanced rechargeable battery technology allowing them to be recharged up to 1500 times!</p><p>They deliver excellent power performance. They come pre-charged and can be used immediately out of the package. These eneloop cells also have increased storage life and better extreme temperature performance than the original eneloop batteries.</p>