How to choose the discharge rate of lithium battery?

The lithium battery discharge rate is usually described by the letter "C". 1 C means the maximum discharge current of battery is 1 times discharge, for example: a 1000 mAh 10 c lithium battery means 10 times the maximum discharge current for the battery, and the largest discharge current: 10 x 1000 ma = 10 A.

Usually we say 1 c discharge lithium battery is a standard battery, 2 c - 10 c for small ratio of battery discharge, more than 10 c for high rate batteries.

Ratio of batteries and the traditional standard cell main difference is that the different craft, standard cells and small ratio of batteries with extremely winding process, that quick starting power supply using high rate battery its internal plate is made by the lamination process, it also provides a simple and easy to distinguish indirect method, winding technology on both sides of the battery will be slightly thick, flatness is a bit poor, and lamination process the ratio of the battery is fairly flat founder.

As the ratio of batteries is in order to meet the demanding large current discharge requirements, it adopted the thicker sheet, the thicker lithium ion separation membrane, the same volume, capacity will be slightly reduced, but relative to the safety, small capacity of sacrifice is not of the word.

The biggest difference between emergency backup power and charger is that the emergency start power needs instantaneous large current discharge for vehicle starting motor to start up. At this time it needs to use "ratio" battery as power. General good large ratio battery discharges at 35 c - 40 c, while the traditional standard cell is not qualified for this job. If the bad businessman uses a standard battery to provide power for emergency start power products, the battery cycle life is short, and the instantaneous large-current discharge will breakdown lithium ion separation membrane, which is extremely easy to lead in scrap after several times is used, or burns on the spot.

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