Ultra-portable size, highly cost-effective; Micro-USB powered, charge everywhere as your will.
Multi-Protection and Low voltage activation
Short-circuit protection, overcurrent protection, overvoltage protection, reverse polarity protection. Minimum voltage activation can be less than 2.9V. Even if your battery hasn't been used for a long time, you don't have to worry about it being too low voltage to charge.
It works with the most popular battery sizes, such as 14500/14650/16340/16650/17650/17670/18350/18490/18500/ 18650/18700/22650/20700/21700/22700/25500/26650/26700 lithium battery and so on.