Model no: BLC-2 Size: 53*38.5*7mm Capacity: 800mAh Charging life cycle: over 500 times Power: 3.8V -5.92Whr Cell Type: Li-ion Polymer Battery Compatible with For Nokia 3310 3330 3410 3510 5510 3530 3335 3686 3685 3589 3315 33, About our universal charger use, it is compatible with most of battery, moved the first pin for the first gold contact of battery, the second pin for the third contact of the battery, then the red led light, this is correct touch, then plug in the power supply, the blue light flashes, indicating that the battery is charging