The SmallRig 4252 D-Tap to LP-E6NH Dummy Battery Power Cable is the same size as the original Canon LP-E6NH batteries. It is fully compatible with D-Tap batteries and power supplies and all cameras that use an LP-E6 battery. The SmallRig 4252 provides a continuous power supply, so you don't have to change batteries between photographs. The easy-to-use dummy battery has an improved chip, offers full decoding and is protected against overvoltage, overheating and short circuits due to overcharging. The construction of fire-resistant PVC and ABS makes this item safe and reliable.