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| Categories | BMS PCB PCM |
|---|---|
| Brand Name: | BAKTH |
| Model Number: | BAKTH-0020200054-01 |
| Place of Origin: | China |
| MOQ: | 5PCS |
| Price: | US$18.68 |
| Payment Terms: | T/T |
| Supply Ability: | 1000PCS/Month |
| Delivery Time: | 10~15days |
| Compatible interface: | SMBUS/IIC |
| Over charge detection voltage: | 4.100V±0.050V (Adjustable) |
| Over Discharge Detection Voltage: | 3.100V±0.050V (Adjustable) |
| Over Current Discharge: | 25.0A±0.5A (Adjustable) |
| Discharging Temperature: | -22~60℃ (Adjustable) |
| Charge Temperature: | 0~45℃ (Adjustable) |
| Dimensions: | 120 × 53.5 × 2.5 mm |
| Company Info. |
| Shenzhen BAK Technology Co., Ltd. |
| Verified Supplier |
| View Contact Details |
| Product List |
The 2S (2-series) 20A Smart Battery Management System (BMS) represents a core component in managing and protecting low-voltage lithium-ion battery packs. With the proliferation of portable electronics, backup power systems, and small-scale electric mobility, the demand for reliable, compact, and intelligent protection boards has surged. This case study analyzes the functionality, adaptability, and implementation scenarios of a typical 2S 20A BMS, demonstrating its role in enhancing system safety, extending battery life, and enabling smart energy management across diverse applications.
| Attribute | Value |
|---|---|
| Model Number | BAKTH-0020200054-01 |
| Series Supported | 2S |
| Continuous Discharge Current (A) | 20A |
| Balancing Type | Active Balancing / Passive Balancing (Optional) |
| Over charge detection voltage(Cell) | 4.100V±0.050V(Adjustable) |
| Over Discharge Detection Voltage(Cell) | 3.100V±0.050V(Adjustable) |
| Customization Available | Yes |
| Warranty | 12 months |
Overcharge Protection: Cuts off the charging current when any cell voltage exceeds a safe upper limit (e.g., 4.25V for ternary lithium), preventing electrolyte decomposition and thermal runaway.
Over-discharge Protection: Disconnects the load when cell voltage falls below a minimum threshold (e.g., 2.5V-3.0V), protecting against capacity loss and cell reversal.
Overcurrent & Short-Circuit Protection: Detects and interrupts excessive discharge currents or short circuits, typically using high-speed MOSFETs rated for 20A continuous current, safeguarding the pack and connected devices from damage.
Temperature Monitoring: Integrates a Negative Temperature Coefficient (NTC) thermistor to monitor battery temperature. It can trigger protection or send alerts if temperatures exceed safe operating windows.
Cell Balancing: Many smart BMS units incorporate passive balancing, where a small resistor bleeds off excess charge from the higher-voltage cell in the pack during charging. This ensures both cells reach full charge simultaneously, improving capacity utilization and longevity. Advanced models may feature active balancing with greater efficiency.
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