Car Starting BMS
XJ-D444 4S 40A 12V Motorcycle Starting BMS LifePO4/NMC Battery
4S Motorcycle starting BMS, 4S 12V 40A BMS, for LifePO4 or NMC battery
With NTC, balance function, and there are 2 types of wiring options: spot welding and soldering, according to your needs.
The working current of continuous charge and discharge is 40A, and the instantaneous current can last 650A 100mS and 150A 5S.
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Product Name
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4S 12V 40A Motorcycle Starting BMS
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Size
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Length 65mm * Width 60mm * Thickness 4mm
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Series
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4S
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Current
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40A
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Voltage
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12.8V/14.8V
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Cell Type
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LFP 3.2V/NMC 3.7V/Sodium-ion battery
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Function
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Balance, NTC
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Function
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Over charge protection, Over discharge protection, Over current protection, Short-circuit protection, Balance function, Temperature sensor function, Electrostatic protection, Dust Protection, Moisture Protection
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Warranty
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24 Months
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Notice: This BMS does not support use of LifePO4 and NMC battery in the same circuit board, please inform us whether it is LFP battery or NMC battery before ordering.
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Specification:
| Test Items | Minimum | Typical | Maximum | Unit |
| Battery pack charging voltage | 14.8 | V | ||
| Charging MOS withstand voltage | 40 | V | ||
| Discharge MOS withstand voltage | 40 | V | ||
| Single cell overcharge detection voltage | 3.6 | 3.65 | 3.7 | V |
| Overcharge recovery voltage | 3.5 | 3.55 | 3.6 | V |
| Overcharge detection delay | 500 | 1000 | 1500 | mS |
| Single cell overdischarge detection voltage | 2.2 | 2.3 | 2.4 | V |
| Over discharge voltage | 2.6 | 2.7 | 2.8 | V |
| Over discharge detection dela | 500 | 1000 | 1500 | mS |
| The battery pack continues to discharge current | 40 | A | ||
| Battery pack keeps charging current | 40 | A | ||
| Self-consumption | 20 | 50 | uA | |
| Equalizing starting voltage | 3.525 | 3.55 | 3.575 | V |
| Equalizing current | 40 | - | 80 | mA |
| Output short-circuit/overdischarge/overcurrent protection recovery | After short circuit/overdischarge/overcurrent protection is removed, the load automatically recovers | |||
| Short-circuit protection delay | 160 | 200 | 240 | uS |
| Normal operating condition B- to P- internal resistance | 30 | mΩ | ||
| Maximum temperature rise of continuous 40A output current | 50 | ℃ | ||