5W Magnesium-air power bank, begins to generate electricity only by adding saltwater, no need of grid charge.
1、Smaller, lighter, and easy to carry;
2、Activated only by saltwater with short response time;
3、No need of grid charge;
4、Easy to operate;
5、Long storage without capacity loss;
6、Harmless to human body;
7、Friendly to environment;
8、No noise or toxic gas emission.