Panasonic Eneloop Pro KKJ55KHC4BA Rechargeable AA Ni-MH Batteries w/LED Quick ChargerThis pack of eneloop Pro AA Rechargeable Ni MH Batteries from Panasonic includes four pre charged, ready to use batteries along with an LED quick charger. The batteries are not subject to any memory effect and can be charged up to 500 times whether they are fully or partially drained. Each battery can maintain up to 85% of its charge for one year. The quick charger has a retractable Type A plug, accommodates AA or AAA Ni MH batteries and features