Traxxas 2972 EZ-Peak Plus 100 Watt NiMH/LiPo Dual Charger with iD System Charger recognizes Traxxas iD batteries to automatically program and optimize charger settings 100-Watt output for charging 5-8-cell NiMH batteries and 2S and 3S LiPO batteries Advanced Mode for full manual control of charger settings and integrated balance ports for conventional LiPO batteries Easy to use interface with charge progress indicator, audible alerts, and integrated cooling fan Charges a NiMH and LiPO at the same time with one button LiPO storage charge to protect your battery investment