brand new and high quality. Features: Charging for protection board. Replace part number for Makita BL1830 BL1840 BL1850 BL1860 power tool battery. Durable, can use many times will not broken until the battery cells dead. Specifications: for: for Makita 18V BL1830 BL1840 BL1850 BL1860 power tool battery Type: charging for protection board Material: CCL(copper clad laminate) Voltage: 18V Nominal Capacity: 3.0Ah Battery type: Li-ion Battery combination: 5 strings Maximum charging current 12A Overcharge voltage protection: 4.25V Overcharge detection delay time: 2S Over discharge voltage protection: 14V Charge and discharge over temperature protection: 100 C Over temperature for protection recovery: 85 C Static power consumption 20.2V Quantity: 1pc Note: Transition: 1cm=10mm=0.39inch Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package Includes: 1 Lithium Battery PCB Board