Topliok Extend Multi Battery Parallel Rapid Charger Adapter Plate Board for DJI Phantom 3 Professional Advance Owner can plug 3 batteries into the charging board at the same time, and they will be charged one by one, does not require human handling, they will finish charging by themselves. Adapter battery has a protective function, do not worry about security issues. Support for third-party adapter extensions, support 3 batteries fast charging scheme. Supports DJI original adapter expansion. Package includes:1 x Battery Parallel Charger Board(other accessories not included.)