Faraday Battery | Battery Rebuild

Faraday E-Bike Battery Rebuild Service

EMP provides professional Faraday e-bike battery rebuild, repair, diagnostic testing, and upgrade review services. This page is for customers who already own a Faraday battery and want EMP to evaluate the original pack for cell replacement, BMS repair, connector repair, charger compatibility, or a possible capacity upgrade.

Faraday battery systems can vary by model year, bike model, supplier, and battery housing style, so EMP confirms the exact rebuild path from customer photos and physical inspection.

Battery Rebuild Service

Most aging e-bike batteries fail because the internal lithium-ion cells lose capacity, become imbalanced, or can no longer support the current demand of the bike. Other common issues include failed battery management systems, damaged charge ports, worn discharge connectors, broken wiring, water intrusion, charger mismatch, and case damage.

• Battery diagnostics and intake review before rebuild approval
• Internal cell replacement when the original battery housing is safe and rebuildable
• Battery management system inspection and replacement when compatible parts are available
• Charge port, discharge connector, fuse, wiring, mounting rail, and case inspection
• Cell balancing, functional testing, and charger compatibility checks before return shipment
• Capacity upgrade review when the original case has enough safe internal space
• Custom replacement battery options when rebuilding the original pack is not the best solution

Common Faraday Battery Problems

• Reduced riding range compared with when the battery was new
• Battery charges but drops voltage quickly under load
• Bike powers on and then shuts off during acceleration or climbing
• Battery does not charge, does not wake up, or charger light does not behave normally
• Loose, burnt, corroded, or damaged charge/discharge connectors
• Battery case, lock, rail, or mounting hardware damage
• Water exposure, storage damage, or long-term sitting with a depleted battery

Compatibility Review

Exact voltage, capacity, connector type, charger type, case style, and internal cell layout must be verified from the original battery label, charger label, and battery photos. EMP does not guess missing specifications. Unknown values are intentionally left blank until the battery is reviewed by a technician.

• Send clear photos of the battery label, charger label, charge port, discharge connector, mounting rail, key/lock area, and full battery case.
• Include photos of the bike model area when possible so EMP can understand how the battery mounts to the frame or rack.
• Do not ship a swollen, burnt, leaking, wet, crushed, or physically unsafe battery without contacting EMP first.
• If the original case, BMS, wiring, connector, rail, or charger is damaged, additional repair parts may be required.

How The EMP Rebuild Process Works

1. Submit your rebuild request and include battery, charger, connector, and bike photos.
2. EMP reviews the information and confirms whether the battery should be shipped in for inspection.
3. The battery is opened and evaluated for cell condition, BMS condition, wiring condition, connector condition, and case safety.
4. When approved, EMP rebuilds the battery using appropriate replacement cells and compatible repair parts.
5. The rebuilt battery is balanced, tested, and returned with service notes and applicable warranty terms.

Important Notes

• This is a battery rebuild and repair service page, not a guaranteed new replacement battery sale.
• The original battery housing is normally required for service.
• Final pricing, rebuild eligibility, capacity upgrade eligibility, and warranty terms depend on inspection.
• Some batteries cannot be rebuilt safely due to case damage, BMS limitations, water damage, unavailable parts, or unsafe prior repairs.

Need help confirming your battery? Contact EMP before ordering and send clear photos of your Faraday battery, charger, connector, and bike.