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Battery pack for Flaw Detector ： 
For the long working time of portable flaw detector ,the capacity and the stability is the most important problems.
The battery for use Sanyo batteries which have high energy ratio, and light weight .It with high cycle life and stable performance.
This lithium battery pack support 12V over current protection value, continuous operating current 7A, charged capacity of 5000mAh, fully meet the electricity needs of the instrument. Specific design requirements parameters are as follows:
Battery pack :18650-3S2P/5000mAh/11.1V。
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