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battery case M4 for 2 pieces 21700
* Quality Plastic Case for Battery Storage
* Brand: KeepPower
* Part No.: M4
* Application: Protected 21700 Li-ion Battery
* Made in China
1.  Quality Plastic Case for Battery Storage
2.  Brand: KeepPower
3.  Part No.: M4
4.  Application: Protected 21700 Li-ion Battery
5.  Life: lock & unlock for over 10,000 times 
6.  Designed by KeepPower, Made in China