HQRP Battery for SDAMX4RBKG10 Sandisk Sansa E260 / E270 MP3 Player Replacement plus HQRP Universal Screen Protector HQRP&reg; Replacement MP3 Player Battery plus HQRP&reg; Universal Screen Protector; Battery Type: Rechargeable Lithium-Ion Battery; Capacity: 700mAh; 100% compatible with original battery and charger devices; No memory effect, the battery can be recharged without loss of capacity. 200 days warranty!