The 4S 10A BMS (Battery Management System) is a critical component for anyone building a 4-cell Lithium-Ion battery pack . This specific unit is a pre-owned/salvaged module that has been rigorously tested to ensure all protection circuits are functional. It is perfect for DIY power banks, small 12V-16V motor projects, and portable electronics where high-end new components aren’t necessary, but safety is still a priority.
Key Features ✨
Triple Protection: Safeguards your expensive 18650 cells against over-charging, over-discharging, and short circuits.
10A Current Capability: Supports a continuous discharge current of up to 10A, suitable for LEDs, small routers, and mini-drills.
Compact Design: Fits easily into battery enclosures or custom 3D-printed cases.
Pre-Tested Reliability: Every “Used” board at Robochacha is checked for voltage throughput before shipping.
Technical Specifications ⚙️
Category
Details
Battery Configuration
4S (4 Cells in Series)
Battery Type
Lithium-Ion / Li-Po (3.7V per cell)
Nominal Voltage
14.8V
Max Charging Voltage
16.8V
Continuous Discharge Current
10A
Peak Current
20A
Overcharge Voltage
4.25V ± 0.05V per cell
Over-discharge Voltage
2.5V ± 0.1V per cell
Protection Features
Overcharge, Over-discharge, Short Circuit
Design
Compact, suitable for enclosures & 3D printed cases
Condition
Used / Pulled (Fully Functional & Tested)
Applications
DIY power banks, small motors, LEDs, routers, mini-drills
Testing Status
Pre-tested for voltage throughput
Weight
2000 g
Dimensions
15 × 10 × 5 cm
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