With over-temperature and short-circuit protection, hence it is safe to use.Easy to make it work and convenient to accurately adjust the output voltage with a mini screwdriver.With the adapter module, you can easily extend Arduino projects to industrial control applications.Feature:Material: lithiumType: batteryModel: 1S-3S XT30Color: blackNumber of cells(S): 1-3SSize: 23 x 5cmPackage included:1 x XT30 battery charging board1 x Balanced cable
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