21V Rechargeable Lithium Battery Set for Power Tools with Level Indicator

About this item

• Built-in LED power indicator helps you get work done more easily, it's timely to recharge, help you monitor the battery charging status and check if the battery is in nice condition.
• It adopts a fine quality plastics material housing, with impact resistance and shockproof design, wear resistance and with fine durability, can provide long service time.
• Built-in integrated microchip with stable working performance, prevents overcharging and self-discharge, provides multiple protections and stable voltage circuit.
• There are two different capacities of 5pcs lithium battery cores or 10pcs lithium battery cores for you to choose, you can choose according to your demands.
• Temperature protection, overtime protection, overcharge protection, overcurrent protection, overpressure protection, and protective panels for battery protection.