BMS 3S 4S 5S 6S 7S 20A 12.6V lithium battery protection board 16.8V 21V balanced 25.2V 29.4V 18650 protection board heat sink
![BMS 3S 4S 5S 6S 7S 20A 12.6V lithium battery protection board 16.8V 21V balanced 25.2V 29.4V 18650 protection board heat sink](http://ae01.alicdn.com/kf/H6eb2cacd77aa4b09ba2fef92c4f3bbc7w/BMS-3S-4S-5S-6S-7S-20A-12-6V-lithium-battery-protection-board-16-8V-21V.jpg_350x350.jpg)
sku: 4000246058799
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$3.38
Shipping from: China
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