【Dummy Battery Kit for Q4】 Fully compatible with NEEWER Q4 Outdoor flash strobe speedlight, this NT-Q4 dummy battery kit continuously power your flash strobe, avoid the frequent battery replacement of the NB-Q4 lithium battery (the standard battery for the Q4 light) via the included AC power adapter and cable, perfect for studio and indoor photography, vlogging, live streaming, and filmmaking | 【Intelligent Safety Protection System】 This dummy battery also features an advanced protection system against overheating, overcurrent, overvoltage, electric shocks, and short circuits, ensuring long lasting uses | 【Extended Power Cables】 Cables are made of pure copper for high electrical conductivity and coated with durable PVC to withstand frequent bending and coiling. With 16.4ft/5m in length (9.8ft/3m long for the AC power cord, and 6.6ft/2m for the output cable of the power adapter), the cables allow you to move and position your flash unimpededly | 【Product Usage】 Insert the dummy battery into the Q4 lamp body and connect the battery to a power outlet using the included power adapter (US Plug), and charge at any time | 【Warning】 1. Update Q4 flash to the latest firmware version from the NEEWER official website if its former version is lower than V1.065. 2. Take a 5 minute break after continuous high intensity flash usage to prevent overheating and automatic shutdown.