100% Compatible with original battery. High Quality Replacement Battery for LOGITECH M-RAG97 MX1000 cordless mouse. Compatible Battery Part Number: LOGITECH 190247-1000, 190247-B000, L-LB2, NTA2253. 100% Compatible with original battery; 180 days warranty Capacity: 1800mAh; Nominal Voltage: 3.7V Battery Type: Li-ion Polymer battery; Safe and reliable battery certified by UL, CE, UN38.3, RoHS Over 300 times cycle life; Long working time