Features: Charging protection board. Replace part number for BL1830 BL1840 BL1850 BL1860 power . , can use many times not broken until the battery cells dead. Specifications: Compatible with: for 18V BL1830 BL1840 BL1850 BL1860 power Type: charging protection board 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 protection recovery: 85 ° C Static power consumption 20.2V Note: Installation guide not included, we strongly recommend you professional installation. Please check as much as possible to make sure the item is what you need. Tips: The product may be updated constantly ,Due To Different Batches, The Actual Product May Have Slight Differences Or Color Differences, Which Does Not Affect Use Color: As Shown Material: plastic Package Contents: 1 x Lithium Battery PCB Board Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.