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3S 20A 12.6V Li-ion Battery BMS Protection Board for 18650 Cells
Availability:
In stock
Rs.170.00
3S 20A 12.6V Li-ion Battery BMS Protection Board for 18650 Cells
Build a reliable battery pack with the 3S 20A Li-ion Battery BMS Protection Board, designed for compatible three-cell lithium-ion battery packs. This compact 3S 12.6V BMS board helps protect a battery pack against supported electrical fault conditions and provides a practical protection solution for DIY electronics, portable power projects and battery-powered equipment.
Designed for compatible 18650 lithium-ion battery packs, this battery protection PCB is suitable for makers, electronics technicians, students and repair professionals working with rechargeable battery systems.
Key Features
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3S Li-ion Battery Compatibility: Designed for a three-cell lithium-ion battery pack connected in series.
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12.6V Full-Charge Voltage: Suitable for conventional 3.7V-nominal lithium-ion cells rated at 4.2V maximum charging voltage per cell.
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Battery Protection: Protection functions may include overcharge, over-discharge, overcurrent and short-circuit protection, depending on the exact board version. Confirm the functions of your supplied model before use.
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Compact PCB Design: Integrates into compatible battery-pack assemblies where the board's dimensions and current rating meet the project requirements.
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18650 Battery Pack Applications: Useful for compatible rechargeable battery projects, portable electronics and DIY power systems.
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Series Battery Monitoring Connections: Uses battery connection points for the three-cell series pack. Follow the wiring diagram for the exact board version.
Technical Specifications
| Specification | Details |
|---|---|
| Product Type | Li-ion Battery BMS Protection Board |
| Series Configuration | 3S — three cells connected in series |
| Battery Chemistry | Conventional lithium-ion |
| Nominal Pack Voltage | Approximately 11.1V for 3.7V-nominal cells |
| Maximum Charging Voltage | 12.6V for cells rated at 4.2V each |
| Advertised Current Class | 20A — verify the continuous rating for the supplied board |
| Compatible Cell Type | Compatible lithium-ion cells, including 18650, subject to the board specifications |
| Protection Functions | Verify the exact supported functions and thresholds |
| Board Dimensions | Confirm against the actual stock item |
| Package Contents | 1 × 3S BMS protection board, unless the listing specifies otherwise |
Where Can You Use a 3S BMS Board?
The 3S 12.6V battery management board can be used in compatible projects such as:
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DIY 18650 lithium-ion battery packs
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Portable electronics and rechargeable equipment
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Battery-powered DIY and robotics projects
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Electronics prototyping and repair work
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Compatible low-voltage power systems
Suitability depends on the device's power requirements, battery configuration, wiring and the board's verified current rating.
Installation and Compatibility Notes
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Use three compatible lithium-ion cells connected in series, with matching chemistry and appropriate ratings.
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Check the board's terminal labels and the manufacturer's wiring diagram before connecting the battery.
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Connect the cell-group taps in the specified order. Incorrect wiring can permanently damage the BMS or battery cells.
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Use a compatible 12.6V lithium-ion charger for a conventional 3S pack using cells rated at 4.2V per cell.
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Confirm the board's continuous discharge-current rating and protection thresholds before connecting a load.
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Insulate exposed terminals and prevent accidental short circuits. Battery assembly should be performed by someone familiar with lithium-ion battery safety.
Important: A BMS is a protection component, not a substitute for a compatible charger, correct wiring or proper battery-cell selection.
Why Choose a 3S Li-ion BMS Protection Board?
A correctly matched 3S battery protection board helps provide an additional layer of electrical protection for a compatible lithium-ion battery pack. Selecting the correct voltage, current rating and protection features is essential for dependable operation.
Order your 3S 20A Li-ion BMS board from Electronics Hub for your next compatible electronics or battery-pack project. Please verify the current rating and board specifications before purchase.