Charging protection board. Replacement for Makita BL1830, BL1840, BL1850, BL1860 power tool battery. Durable design ensures long-term use until battery cells degrade. Type: Charging protection board Voltage: 18V Nominal Capacity: 3.0Ah Battery Type: Li-ion Battery Configuration: 5S Maximum Charging Current: ≤12A Overcharge Voltage Protection: 4.25V Overcharge Detection Delay Time: 2S Overdischarge Voltage Protection: 14V Charge and Discharge Overtemperature Protection: 100°C Overtemperature Protection Recovery: 85°C Static Power Consumption: 20μA DIY Supplies: Electrical Components Color: Blue Material: Plastic Package Contents: 1 x Battery PCB Board Note: Lighting and monitor settings may cause slight color variations between the image and the actual item. Measurement tolerance: ±1-3cm.