Bolt Energy MadJax X2, X4, X6, Ascent 51V 168AH Heated Battery Kit

The Bolt Energy heated lithium battery kit for MadJax X2, X4, X6, and Ascent golf carts combines a 51.2V battery with Bluetooth monitoring, a Smart SOC meter, and a lithium-specific charger. Choose the Standard or Pro installation kit based on the components your cart requires.

Capacity verification required: The product title and kit contents identify a 168Ah battery, while the electrical specifications list 168Ah and 8,601Wh. Confirm the supplied battery's capacity and specifications before ordering.

Choose Your Installation Kit

Standard Installation Kit

• 51.2V 168Ah heated lithium battery
• Bluetooth receiver and Smart SOC (state-of-charge) meter
• Owner's manual
• Six 3/8-inch battery ring terminal connectors
• Ten 10-inch tie straps
• Bolt Energy USA stickers
• Waterproof high-speed lithium charger
• AC hardwire port and DECO cover plates
• 15-foot 12 AWG green lighted extension cord

Pro Installation Kit

Includes everything listed in the Standard Kit, plus:

• 30-amp voltage reducer
• Two 40-inch 2 AWG premium installation cables
• 400A solenoid
• Battery removal strap

Which option is right for your cart? Confirm your MadJax model, year, original battery system, mounting requirements, and installation hardware before selecting a kit. The Standard and Pro component lists alone do not establish application compatibility.

Electrical Specifications:

• Nominal Voltage: 51.2V
• Working Voltage: 43.2 – 58.4V
• Recommended Voltage: 48.0V – 57.0V
• Nominal Capacity: 168Ah
• Energy: 8,192Wh
• Capacity at 25A: 384 min
• Efficiency: 0.99
• Self-Discharge: <3% per Month

Discharge Specifications:

• Maximum Continuous Discharge Current: 250A
• Peak Discharge Current: 520A ± 15.6A (30S)
• BMS Discharge Current Cut-Off:
  • 260 A ± A7.8A (50S)
  • 520A ± 15.6A (30S)
• BMS Discharge Voltage Cut-Off: 40V
• Recommended Low Voltage Disconnect: 48.0V
• BMS Reconnect Voltage: 41.6V
• Discharge Temperature: -4 to 149°F (-20 to 65°C)

Charge Specifications:

• Recommended Charge Current: 5 – 52A
• Maximum Input Current: 350A
• Charge Current Cut-Off: 375A
• BMS Charge Voltage Cut-Off: 58.5V
• Reconnect Voltage: <58.5V
• Charging Temp. Range: 34°F to 140°F (0-60°C)

Mechanical Specifications:

• Dimensions (L x W x H): 29.57" x 10.17" x 9.13"
• Weight: 153lbs (69.4kg)
• Terminal Type: M8*1.5*25mm
• Cell Configuration: 1P16S
• Case Material: Powder Coated Steel
• Enclosure Protection: Designed with IP66 Standard
• Cell Type – Chemistry: Prismatic- LiFePO4

Battery Monitoring and Charging

Use the Bolt Energy mobile app with the included Bluetooth receiver to monitor charge level, voltage, current, and temperature. The included Smart SOC meter provides a dedicated state-of-charge display.

Professional installation is recommended. Follow the supplied installation instructions and verify mounting, wiring, and charger configuration before use. Use the included lithium-specific charger; do not assume your original charger is compatible.

12-Year Transferable Warranty

Includes a 12-year transferable warranty, subject to Bolt Energy USA's warranty terms, coverage, exclusions, and transfer requirements.

Frequently Asked Questions

Which carts is this listing intended for?
This listing identifies MadJax X2, X4, X6, and Ascent golf carts. Confirm your specific model, year, and installation requirements before purchase; universal or plug-and-play fitment is not established by the component lists.

What battery is included?
Both installation-kit options list a 51.2V 168Ah heated lithium battery. The heated upgrade is included at no additional charge. Confirm capacity before purchase because the electrical specifications currently list 168Ah.

Does this fit every MadJax cart?
No universal fitment is claimed. Your model, year, original battery system, and installation requirements must be checked.

What does the Pro Kit add?
A 30-amp voltage reducer, two 40-inch 2 AWG installation cables, a 400A solenoid, and a battery removal strap.