Kastar 3-Pack 6V Ni-MH 4400mAh Rechargeable Battery Replacement for Sirchie Bluemaxx, BM500LED, BM500, BM520, BM525, BMK705, BMK705220, BMK755, BMK755220 (Forensic LED Lights)

High capacity power: Kastar's 4400mAh Ni-MH batteries deliver robust, long-lasting energy so your devices run longer and perform reliably. Ideal as replacements for compatible Sirchie forensic lights and LED models. Battery specification: Battery Type: Ni-MH; Battery Voltage: 6V; Battery Capacity: 4400mAh; Battery Dimensions: 178 x 32 x 32mm (7.0\" x 1.25\" x 1.25\"). Extended cycle life: A mix-protection additive is incorporated into the cathode to guard against material degradation during charging and discharging, extending usable life up to 1200 cycles. Low self-discharge design: The embedded seal structure increases crystal lattice spacing to create additional room for hydrogen, reducing self-discharge so these batteries retain charge longer than many alternatives. Environmentally conscious construction: These Ni-MH cells are free of Hg/Cd/Pb and are encased in a DBCK steel shell, which helps protect the battery against explosion from overpressure.