| Brand | Unbranded |
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Check the listing for details. 10PCS 5S 21V 65A 18650 Li-ion Battery Protection Board for Wrench Angle Grinder. Condition: New. Listed at 17.56 USD. Step up module. Step down module. Short circuit protection condition: external load short circuit. Short-circuit protection release condition: charging recovery or disconnecting the load. Over-current protection lifting condition: charging recovery or load disconnection.