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JKBMS
JKBMS JK-BD6A20S4PD | 40A Smart BMS for E-Bike & Light EV | 7S-20S LiFePO4 Li-ion LTO | 0.6A Active Balance
JKBMS JK-BD6A20S4PD | 40A Smart BMS for E-Bike & Light EV | 7S-20S LiFePO4 Li-ion LTO | 0.6A Active Balance
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Prix habituel
$42.68 USD
Prix habituel
$86.68 USD
Prix promotionnel
$42.68 USD
Frais d'expédition calculés à l'étape de paiement.
Quantité
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Compact & Reliable — JKBMS JK-BD6A20S4PD 40A Smart BMS for 7S–20S
The JK-BD6A20S4PD covers the full 7S–20S voltage range (24V–72V) at 40A continuous current — designed for e-bikes, electric skateboards, and small backup power systems. Bluetooth and UART display interface are built in as standard; One-wire, LED battery level display, and heating function are available as optional add-ons.
Compatible chemistries: LiFePO4 / Li-ion / LTO
Key Specifications
| Parameter | Specification |
|---|---|
| Model | JK-BD6A20S4PD |
| Cell Configuration | Li-ion: 7S–20S / LiFePO4: 8S–20S / LTO: 14S–20S |
| Continuous Current | 40A |
| Maximum Instantaneous Current | 80A |
| Maximum Internal Loop Resistance | 1.6mΩ |
| Active Balance Current | 0.6A |
| Supply Voltage | 20–100V |
| Operating Power Consumption | ≤800mW |
| Operating Temperature | -30°C to 70°C |
| NTC Quantity | 1 built-in, 1 external (2 external optional) |
| Board Dimensions | 119.5 × 73 × 13.6 mm |
| Finished Weight | 325g |
| Standard Communication | Bluetooth + UART (LCD display port) |
| Optional Add-ons | One-wire / LED battery level display / Heating function |
| Compatible Chemistry | LiFePO4, Li-ion, LTO |
Protection Features
- Charge overcurrent protection
- Charge overvoltage protection
- Charge over-temperature protection
- Low temperature protection during charge
- Discharge overcurrent protection
- Discharge undervoltage protection
- Discharge over-temperature protection
- Short circuit protection
Standard Features
- LED Bluetooth status indicator
- APP Bluetooth remote operation
- Battery capacity calculation
- High precision voltage acquisition (±3mV)
- High precision current acquisition
- Support information screen display
- Accurate time logging
Optional Features
- One-wire (Optional)
- LED battery level display (Optional)
- Heating function (Optional)
Default Parameters
| Parameter | Li-ion | LiFePO4 | LTO |
|---|---|---|---|
| Balancing initial voltage | 3V | 3V | 2V |
| Unit overcharge voltage | 4.2V | 3.6V | 2.7V |
| Unit undervoltage protection | 2.82V | 2.6V | 1.8V |
| Automatic shutdown voltage | 2.8V | 2.5V | 1.7V |
| Charge over-temperature protection | 70°C | 70°C | 70°C |
| Discharge over-temperature protection | 70°C | 70°C | 70°C |
| Charge low-temperature protection | -10°C | -10°C | -10°C |
| MOS over-temperature protection | 100°C | 100°C | 100°C |
OEM / ODM & Bulk Orders
📩 For wholesale pricing, MOQ, and custom configurations, please contact us directly.
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