Original Nokia BMC-2, Nickel Metal Hydride Battery (NiMH) for Nokia 3310/ 3360/ 3390/ 3395 Cellular Phones uses powerful Nickel Metal Hydride technology and there is no memory effect either. Original Nokia BMC-2 NiMh battery is rated at 640 mAh. This slim battery gives great talk & standby times. Note that a new nickel metal hydride battery's full performance is only achieved after 2-3 complete charge and discharge cycles. Environmentally Friendly.