HQRP 3500mAh Extended Battery for FLUKE 120 123 124 125 Scopemeter Test Tool, 43 43B Power Quality Analyzers B11483 BP120 BP130 + HQRP Coaster HQRP&reg; Rechargeable Battery plus HQRP&reg; Coaster; Battery Voltage: 4.8V; Capacity: 3500mAh; Ni-Mh; 1 Year warranty!