Can be used at any point of charge (not when fully discharged)

Over 200% longer lifetime.
	Optimum Charging System
	1.	Communicates with individual battery.
	2.	Recognizes ID of battery and its history.
	3.	Analyzes its condition, e.g. battery may have been abused by heat or over-discharging, or weakened by cycle age.
	4.	Identifies any over-discharged cells, and optimises the charge to increase the life of these cells.
	5.	knows how to look after each battery to maximize cycle life + work volume.