Daniamant RB 2 batteryThe well established RL/RB system continues to be available. It comprises of the RB2 battery pack, which is fitted to the RL1 Internal Light, or the RL4 External Light (requires 2 x RB2‘s).The battery is connected to the lead by a polarised sealed plug. This is fixed in place by a screwed locking ring.This enables easy service and replacement.