Product Overview
High Cranking Amp Motorcycle Battery is a 51.2V 40Ah LiFePO4 motorcycle battery using 3.2V/40Ah prismatic aluminum shell cells, with 2.05kWh rated energy. It is suitable for motorcycle power projects requiring higher cranking current, stable output and Bluetooth status monitoring.
Technical Specifications
|
Parameter |
Content |
|
Model |
JQ51240E |
|
Rated Voltage |
51.2V |
|
Rated Capacity |
40Ah |
|
Rated Energy |
2.05kWh |
|
Battery Type |
Lithium Iron Phosphate Square Aluminum Shell Cell (3.2V/40Ah) |
|
Overcharge Voltage |
58.4V |
|
Cut-off Voltage |
40V |
|
Continuous Charge Current |
20A |
|
Maximum Charge Current |
40A |
|
Continuous Discharge Current |
40A |
|
Maximum Discharge Current |
80A |
|
Charging Temperature |
0℃ ~ 45℃ |
|
Discharging Temperature |
-20℃ ~ 60℃ |
|
Storage Temperature |
-10℃ ~ 35℃ |
|
Dimensions |
190 × 160 × 355mm |
|
Weight |
18.5kg |
|
Packaging Size |
260 × 230 × 430mm |
|
Cycle Life |
6000 cycles |
|
Communication |
Bluetooth |
|
Warranty |
3 years |
|
Brand |
J&Q ENERGY |
|
Customization |
Supported |

Key Features
- High cranking current: 80A maximum discharge current is suitable for starting and acceleration needs.
- 51.2V voltage platform: suitable for motorcycle battery systems on the corresponding voltage platform.
- Long cycle life: 6000 cycles helps reduce replacement frequency.
- Bluetooth monitoring: convenient for viewing charge/discharge status.
- Compact structure: 190 × 160 × 355mm dimensions make vehicle space matching easier.
Battery System and BMS
This model uses LiFePO4 prismatic aluminum shell cells with a 3.2V/40Ah cell specification. The BMS manages charging, discharging and operating status, making it suitable for motorcycle projects that require cranking current, temperature range and maintenance efficiency.


Charging and Installation
Select charging equipment according to the 51.2V LiFePO4 battery system, and check the 20A continuous charge current, 40A maximum charge current and 58.4V overcharge voltage. Before installation, confirm battery compartment dimensions, mounting method, wiring position and control system requirements.
Customization Capability
- Specification customization: 51.2V motorcycle platform, capacity, cranking current and discharge capability.
- Vehicle adaptation: 190 × 160 × 355mm battery compartment, mounting method and wiring position.
- Function options: Bluetooth status viewing, appearance, interfaces and labels.
- Project matching: vehicle voltage platform, controller parameters, packaging and purchase quantity.


- Quality system: Production, inspection and shipment management are carried out according to the ISO 9001 quality management system.
- Certification documents: UN38.3, MSDS and third-party test documents can be confirmed according to motorcycle battery project and transportation requirements.
- Shipment documents: specification sheet, outer carton labels, packaging information and batch shipment inspection records can be provided as required.





Frequently Asked Questions
What motorcycle projects is this battery suitable for?
-
It is suitable for motorcycle power projects on the 51.2V voltage platform that require higher cranking current and stable output.
Does it support operating status viewing?
-
Yes. Bluetooth can be used to view battery status, making maintenance easier.
What is the maximum discharge current?
-
The maximum discharge current is 80A, suitable for starting, acceleration and short-term high-load conditions.
What information should be confirmed before installation?
-
Confirm battery compartment dimensions, mounting method, wiring position, controller parameters and vehicle voltage platform.
How should the charger be matched?
-
Use charging equipment compatible with 51.2V LiFePO4 battery systems, and check the 58.4V overcharge voltage and 40A maximum charge current.
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