and look what you get 150ma of pure power to warm your hands
tho not all is lost as they do work with the right amount of power just they want 8v and 2.7 amps and get warm fast so need to make a 2s batt with some 18650s i have just waiting for a bms to show up to put one together.
i did look and a lipo batt that goes in these things are £20 for a 2000ma one so might as well use the 10a 2500 18650s i have.
tho not all is lost as they do work with the right amount of power just they want 8v and 2.7 amps and get warm fast so need to make a 2s batt with some 18650s i have just waiting for a bms to show up to put one together.
i did look and a lipo batt that goes in these things are £20 for a 2000ma one so might as well use the 10a 2500 18650s i have.