Features
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Compact "infinity" round design for tight enclosures or cylindrical battery packs 
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Provides essential protection: overcharge, over-discharge, and current limiting 
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Ensures stable and reliable battery operation in various applications 
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Simple integration into 2-cell (2S) battery packs 
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Suitable for DIY electronics, compact tools, and power banks 
Specifications
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Model: 2S Lithium Battery Protection Board 
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Configuration: 2S (7.4V nominal) 
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Overcharge Detection Voltage: 4.28V ± 0.05V 
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Over-discharge Detection Voltage: 2.9V ± 0.05V 
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Maximum Continuous Discharge Current: 4A 
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Rated Operating Current: 3A 
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Type: Battery Protection Board 
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Shape: Round (infinity layout) 
Applications
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2S 18650 battery packs for electronics and embedded systems 
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Portable LED lighting and fans 
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DIY robotics and IoT projects 
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Compact power supplies and battery-powered tools 
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Rechargeable gadgets with 7.4V input requirements