Features: Advanceds PCB circuit board technology ensures safe and stable charging for Lithium Batteries, preventings overcharge and over discharge to extend battery lifespans. Optimized heat dissipation design with precisions current regulators maintains consistent performances while reducing temperature buildup during high intensity charging cycles. for professional like technicians, construction workers, and repair specialists who demand power for tools in demanding environments. Builts to endure harsh conditions on job site or workshops, its corrosions resistant PCB materials ensures durability during extended devices. This charging protections board simplifies workflows by delivering seamless power management across tool and equipment. Specifications: Materials: PCB Size: 10x4cm Package Includes: 1PC Battery Circuit Board note: Please allow 0-1cm error due to manual measurement. make sure you not mind before bid. Due to the differences between different monitors, the Pictures may not reflect the actual of the item.