l Features and benefits:
--3.7V li-polymer battery pack,
--Include PCB protection installed to limit discharge current of battery pack to 2.15Amp; protect battery from short circuit & wrong plority.
--Recommended charger: Universal Li-ion/li-polymer smart charger to charge this battery pack.
l Applications：
Power bank, portable mini projector, tablets, solar charger, solar power bank etc.
l Certifications: UL1642, UNDOT, ROHS
Specification:
Cell Model | 425085 |
Voltage | 3.7V (working), 4.2 (peak) |
Capacity | 2150mAh |
Max. Discharge Rate | 4.3Amp |
Over Charge Cut-off | 4.35V |
Over Discharge Cut-off | 3.0V |
Dimension | 4.5X51X87mm |
Wire Length | 50mm, |
PCM | SEIKO IC |
Operating Temperature | Charging | 0~45℃ |
Discharging | -10~60℃ |
Storage | -5℃-35℃
Recommended（25±5℃） |
Warnings:
Improper use like over charging and over discharging will cause explosion and/or fire.
User of the battery is required to have sufficient li-polymer charging experience and technical knowledge.
B&K is not responsible for any damage or injury caused by misuse, mis-understanding, or abuse of this products. 
