The OrcaTorch B90 is a rechargeable lithium-ion battery pack designed specifically for the D900V and D910V video lights, rated at 12.6V, 38Wh (3 x 18650 cells). A spare pack is valuable for liveaboard trips or multi-dive days, letting one battery charge while the other stays in use. Charging takes approximately 2.5 hours. Runtimes on a full charge vary by mode: 2.75 hours on high neutral white flood (2200 lumens), 4 hours on high cool white spot (820 lumens), 4.3 hours on low flood (600 lumens), and up to 18 hours on the lowest flood setting (250 lumens), with additional runtimes available in red and UV modes. The pack is compatible with the D900V and D910V only.