Lithium Ion Battery Manufacturers

You can rest assured to buy Lithium Ion Battery from our factory and we will offer you the best after-sale service and timely delivery. All of our lipo batteries have strictly quality process: 
First is the appearance --- There shall be no scratch, bur and other mechanical scratch, and the connector should be no rust dirt. The structure and dimensions according the drawing of the battery;
Then is the measuremet apparatus --- 
1)Dimension measuring instrument; 
2)Voltmeter,standard class specified in the national standard or more sensitive class, impedance not less than 10KΩ/V. 
3)Ammeter, standard class specified in the national standard or more sensitive class. total external resistance including ammeter and wire is less than 0.01Ω.
4) Impedance Meter, impedance shall be measured by a sinusoidal alternating current method(AC 1kHz LCR meter).
The third is standard test condition:
Test should be conducted with new batteries within one month after shipment from our factory and the cells shall not be cycled more than five times before the test. Unless otherwise defined, test and measurement shall be done under temperature of 23±2℃(capacity test), 20±5℃(other test)and relative humidity of 75% or less.