Solutions

E-Bike Power Battery

EV-Grade Class A LiFePO4 Cells from Tier-1 Manufacturers


To ensure long-term power battery reliability, Quarelex uses only Electric Vehicle (EV)-grade, Class A LiFePO4 cells from Tier-1 manufacturers such as EVE and Lishen.

Cell Voltage Difference: < 10mV

Actual Cell Capacity: > 100% of rated capacity

Cycle Life: > 3500 cycles @ 80% Depth of Discharge (DOD)

High Power BMS


The Quarelex LiFePO4 power battery BMS(Battery Management System) features a single board solution, with 32-bit ARM processor and integrated charging and discharging MOS array, supporting max. 80V200A application.

Protection: Overcharge, Over-discharge, High/Low Voltage, Over current, Short Circuit, High/Low Temperature.

Monitoring: Voltage, Current, Temperature, SOC, SOH.

Charge-Discharge Control: Regulate charge&discharge process to prevent overuse.

Balancing: Cell balancing through active or passive balancing.

Communication: LCD screen & Bluetooth.

Data Logging: Records historical battery data for analysis and fault diagnosis.

Fault Diagnosis: Detects and diagnoses battery abnormalities.

4G+GPS (Optional)


Remote Control and Monitoring: Switch on/off battery wirelessly on your phone, access all real-time battery data, faults, and alerts directly from your computer or mobile device.

OTA Firmware Updates: Enable remote diagnostics and resolution for over 80% of after-sales issues, minimizing downtime and service costs.

GPS Tracking Capability: Secure your forklift and battery assets with real-time location monitoring and geofencing alerts.

E-Bike Power Battery
    Publish time 2025-10-13 17:09    
E-Bike Power Battery

60V Specifications


ModelQM60-50QM60-100
Electrical
Nominal Voltage 64 V
Operation Voltage50 - 73 V
Rated Capacity50 Ah100 Ah
Rated Energy3.2 kWh6.4 kWh
Estimated Range Per 100% SOC50-60 miles (80-95 km) @ 40km/h100-120 miles (160-190 km) @ 40km/h
Suggested DoD< 90%
Max DoD100%
Self-Discharge< 3% per Month
Cells TypeLiFePO4 Prismatic
Cell Model3.2 V 50 Ah 3.2 V 100 Ah 
Cells Configuration20S1P20S1P
Balancing400 mA, Active Balancing
Charge
Charge Voltage72 V
BMS Charge Voltage Cut-Off72 V
Recommended Charge Current< 25 A< 50 A
Max. Continuous Charge Current50 A100 A
Charge Temperature0 - 55 °C (32 - 131 °F)
Discharge
Max. Continuous Discharge Current60 A100 A
Peak Discharge Current100 A @ 10S200 A @ 10S
Recommended Low Voltage Cut-Off58 V
BMS Discharge Voltage Cut-Off50 V
Discharge Temperature-20 - 60 °C (-4 - 140 °F)
Mechanical
Dimensions320 * 260 * 160 mm
(12.6 * 10.24 * 6.3 inch)		560 * 240 * 180 mm
(22.05 * 9.45 * 7.09 inch)
Weight31 kg (68.34 lbs)56 kg (123.46 lbs)
Terminal TypeCharge: C14 Inlet or Anderson, Discharge: Anderson
Case MaterialPowder Coated Steel
Enclosure ProtectionIP65
Communication
LCD ScreenYesYes
BluetoothYesYes
CANYesYes
Safety And Warranty
Protection FunctionOvercharge, Over-discharge, Over current, Short Circuit, Over Temperature, Under Temperature
Storage0 - 40 °C (32 - 104 °F), < RH 80%, > 60% SOC
Warranty2 Years
Lifespan10 years or 3500 Cycles @ 25°C, 80% EOL
CertificatesCE, RoHS, UN38.3, IEC, MSDS

1. All specifications shown above are subject to change during products improving at any time without prior notice.

2. For other batteries not listed above, customization is also available.


72V Specifications


ModelQM72-50QM72-100
Electrical
Nominal Voltage 76.8 V
Operation Voltage60 - 87.6 V
Rated Capacity50 Ah100 Ah
Rated Energy3.84 kWh7.68 kWh
Estimated Range Per 100% SOC65-75 miles (105-120 km) @ 50km/h130-150 miles (210-240 km) @ 50km/h
Suggested DoD< 90%
Max DoD100%
Self-Discharge< 3% per Month
Cells TypeLiFePO4 Prismatic
Cell Model3.2 V 50 Ah 3.2 V 100 Ah 
Cells Configuration24S1P24S1P
Balancing400 mA, Active Balancing
Charge
Charge Voltage72 V
BMS Charge Voltage Cut-Off72 V
Recommended Charge Current< 25 A< 50 A
Max. Continuous Charge Current50 A100 A
Charge Temperature0 - 55 °C (32 - 131 °F)
Discharge
Max. Continuous Discharge Current60 A100 A
Peak Discharge Current100 A @ 10S200 A @ 10S
Recommended Low Voltage Cut-Off69.6 V
BMS Discharge Voltage Cut-Off60 V
Discharge Temperature-20 - 60 °C (-4 - 140 °F)
Mechanical
Dimensions460 * 230 * 160 mm
(18.11 * 9.06 * 6.3 inch)		640 * 240 * 180 mm
(25.2 * 9.45 * 7.09 inch)
Weight36 kg (79.37 lbs)63 kg (138.89 lbs)
Terminal TypeCharge: Anderson, Discharge: Anderson
Case MaterialPowder Coated Steel
Enclosure ProtectionIP65
Communication
LCD ScreenYesYes
BluetoothYesYes
CANYesYes
Safety And Warranty
Protection FunctionOvercharge, Over-discharge, Over current, Short Circuit, Over Temperature, Under Temperature
Storage0 - 40 °C (32 - 104 °F), < RH 80%, > 60% SOC
Warranty2 Years
Lifespan10 years or 3500 Cycles @ 25°C, 80% EOL
CertificatesCE, RoHS, UN38.3, IEC, MSDS

1. All specifications shown above are subject to change during products improving at any time without prior notice.

2. For other batteries not listed above, customization is also available.