Features: Advanced technology ensures comprehensive protections against overcharge, over discharge, and short circuits, extending the lifespans for HIKOKI 36V 18V Battery lithium batteries for high frequency power tool users. Engineered with optimized heat dissipation and broad compatibility, this PCB board supports multiple model, offering versatile use without frequent replacements. Designed for professional demanding robust battery management and households/workshops managing diverse for powered devices. Maintains stable performances during prolonged operates in outdoor construction sites or intensive industrial projects requiring uninterrupted power supply. Built with premium corrosions resistant PCB materials, it delivers lasting durability while reducing environmental waste through extended service cycles. Specifications: Component: PCB circuit board Size:Approx. 9.8x6cm/3.86x2.36inch Color: Green for HIKOKI 36V 18V Battery Features: It has multiple protections functions such as overcharge, overdischarge, overcurrent, and short circuit to ensures safe and stable operate of the battery Package Includes: 1pc Battery protections Board note: Please allow 1-3cm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual item color.