The Golisi i2 Smart Battery Charger is a mini portable two-battery charger. It charges any cylindrically shaped battery from 32mm to 70mm. The LCD display lets you know as it charges its percentage charged, what current it has and the voltage. It will even tell you when an error has happened. It is able to determine what type of battery has been placed in its docks and charge it according to that particular battery’s needs. The 2A slot offers lighting fast charging for when you need a battery charged in a hurry. In case you accidentally place your batteries in backward, the built-in temperature control will prevent problems from happening. It also will automatically stop charging once the battery(s) are fully charged. The body of the Golisi i2 is made with fireproof ABS/PC material and the springs and contact plates are military grade stainless steel. It comes with Product Liability Insurance. Keep your batteries charged safely with the Golisi’s i2 Smart Battery Charger!