This is a short review of a very useful device which should greatly simplify the job of caring for and extending the lives of your LiPo (Lithium Polymer) batteries. There are two important points all operators of modern drones need to consider; periodic deep discharge and proper storage. Battery - Deep discharge To maintain their lives, it is recommended that LiPo batteries be cycled (deep discharged) every 20 cycles. Up to now, this has typically involved draining batteries