... 4.OEM size and capacity,sample available broad-spectrumre rechargeable 3.7V 3500mAh lipo battery 487390L 1.Model: 487390L 2.Nominal ... . 6.on time delivery. 7. UL,PSE,CE,RoHS,MSDS UN38.3, certification8.Environmental friendly.9. No memory effect.10,OEM dimension ... . Lights, model aircraft, miner's lamp, safety helmets, safety headlights;3. Bluetooth headsets, e-books, mobile DVD, mobile TV, mobile scales ...