XTAR VC4 Charger -4 Port -USB Innovative LCD screen displays charging current, battery voltage, and charging capacity. Intelligently identify a battery&#39;s input power and automatically adjust suitable charging method Three charging stages (TC-CC-CV) can prolong your batterie&#39;s life. Soft start will prevent any sudden current spikes which is used to prolong battery lifespan. ships out within one business day by Andrew-Amanda