1pcs Compatible 5S 21V Lithium Battery Protection Board 3MOS with Temp Protection Yellow PCB Universal Power Tools

Semi-finishedproduct : No High-concerned chemical : none Electronic : No DIY Supplies : Electrical Brand Name : Stlxy Origin : Mainland China Output Voltage : 21V

Features: 1. High-precision protection circuit, support for overcharge, overdischarge, short-circuit multiple protection, to ensure the safety of use 2. Maximum 65A instant start current output, strong performance, suitable for high-power tools and equipment needs. 3. Designed for wrenches, angle grinders and other power tools, strong compatibility, convenient and reliable installation. 4.Adopting high quality material, excellent heat dissipation performance, ensuring long time stable operation without hidden danger. 5.Universal 18650 lithium battery specifications, flexible and adaptable to a variety of battery pack programs, widely used. Parameter: Continuous discharge current: 20A Instantaneous (starting) current: 60±5A Charging voltage: 4.25±0.025V Continuous charging current: 2A Overcharge detection voltage: 4.25±0.025V Overcharge detection delay time: 0.5S Overcharge recovery voltage: 4.0±0.025V Over-discharge detection voltage: 2.7±0.025V Over-discharge detection delay time: 1S Over-discharge release voltage: 3.0±0.025V Over-current detection voltage: 100mV Over-current detection delay time: 350ms Over-current protection lifting condition: charging recovery or load disconnection Short circuit protection condition: external load short circuit Detection delay time: 250us Short-circuit protection release condition: charging recovery or disconnecting the load Operating temperature range: -20-75°C

Yellow printed circuit board, compatible with common Makita-style battery housing. Designed for 5S ternary lithium battery pack, full charge voltage 21V (4.2V per cell). Adopt 3 parallel N-channel MOSFETs for charge & discharge control. Reserved soldering pad for external NTC thermistor to monitor cell temperature. Comprehensive safety protection: over-charge, over-discharge, charge/discharge over-current and short-circuit protection. Complete B0~B4 sampling terminals and heavy-duty P+/P- pads for thick wire welding. Ideal for maintenance, DIY assembly of electric drill, impact driver and garden power tool packs. Notice: NOT suitable for LiFePO4; strictly follow sampling wiring order B0-B4. label:yes