The QB1+ is compatible will all QB1 locking power module cords. Both batteries feature: 250 full power flashes (with GN 110 flash unit), hundreds more using automatic or TTL flash modes. *** More Info!! Page Down!! *** Recycle time: 3.5 - 6 seconds, depending on flash. Both weight 26 oz. Dimensions for the QB1: 4x4.25x1.75 inches. Dimensions for the QB1+: 3.75x4.25x1.75 inches. Both have belt clip on battery case. Both require proper module for flash being used. Twin output jacks allow use of two flash units. One red LED signals when internal automatic circuit breaker has been thrown to protect against flash overload. When the charger is connected an LED comes on and when the battery is fully charged the LED goes out.