HQRP 750mAh Battery for Creative Zen Micro 4GB / 5GB / 6GB MP3 Player , Li-Ion , Extra High Capacity ! plus HQRP Universal Screen Protector 750mAh Extra High Capacity , 3.7v; HQRP Battery plus HQRP Universal Screen Protector for Creative. The battery is completely compatible with batteries of smaller capacity; Chemistry: Li-Ion; No Memory Effect, the Battery can be recharged without loss of capacity; CE and SGS-ISO-9001-2000 Approved.