Features: Design for 3cell configurations, this 12.6V 8A lithiums Battery protections Board ensures overcharge, over discharge, short circuits, and overcurrent protections, while its builts in balancer optimizes charging efficiency for 18650 battery pack. Featuring robusts 8A continuous discharge capacity, compactly design, and precise voltages monitoring (4.25V±0.05V overcharge cutoff), it guarantees reliable performances in highly demand applications. Ideal for DIY enthusiasts, electric drill users, and powerbanks builders requiring safe, balanced lithiums battery management with industrial safeguards. Perfect for integration into electric tool, portable charging adapter, and electronics projects where stable 12.6V output and battery longevity is critical. Engineered with multilayer protections algorithms and low standby current (<30μA), this battery equalizers board prioritizes safety without compromising energy delivery in compactly space. Specifications: Composition:Plastic Size:Approx.36x33.50cm/14.17x13.18inch Charging voltages: 12.6V to 13V Upper operating current: 8A Upper transients current: 40A±5A Overcharge ranges: 4.25±0.05V Over disvoltage ranges: 2.5±0.05V Function: over charge/ over discharge/short circuits/ over current protections Applicable scenario:power tool Option Type:1pc,3pcs; Package Includes: Package A 1pc lithiums Battery Protections Module Package B 3pcs lithiums Battery Protections Module note: Please allow 1-2cm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual item color.