Magnum Battery | Battery Rebuild
🔋 Magnum E-Bike Battery Rebuild Service
Restore your Magnum battery to peak performance—or upgrade it for more range, stronger output, and longer-lasting rides.
At EMP, we specialize in rebuilding Magnum e-bike batteries using premium lithium-ion cells and precision assembly. Whether your battery is no longer holding a charge or you’re looking to extend your ride time, we’ve got a dependable solution.
⚙️ What We Do
We rebuild your existing Magnum battery, replacing all internal cells while maintaining the original case, fitment, and compatibility with your bike.
- Complete internal cell replacement
- Optional capacity upgrades
- Retains original mounting system and connectors
- Fully tested before return shipment
🔧 Magnum Models We Service
We support a wide range of Magnum e-bike models. Below are some of the most common:
🟢 Magnum Metro Battery Rebuild
A commuter-focused model built for comfort and reliability.
- Fully serviceable battery platform
- Upgrade options available for increased range
- Maintains original fitment and performance
Perfect for riders who want: dependable daily commuting with extended battery life
🟢 Magnum Ui5 / Ui6 Battery Rebuild
One of Magnum’s most popular lines, known for efficiency and versatility.
- Reliable rebuild with upgrade options
- Improved range and consistent output
- Maintains factory compatibility
Perfect for riders who want: a balance of comfort, power, and range
🟢 Magnum Peak Battery Rebuild
Fat-tire model designed for all-terrain performance.
- Upgrade options for increased capacity and output
- Stronger performance under load
- Ideal for off-road and mixed terrain use
Perfect for riders who need: reliable power across varied riding conditions
🟢 Magnum Pathfinder / Ranger Battery Rebuild
Step-through and comfort-oriented models.
- Smooth, reliable rebuild with optional upgrades
- Maintains original fit and design
- Increased range for longer, relaxed rides
Perfect for riders who want: comfort-focused riding with improved battery life
🟢 Other Magnum Models
We can also service additional Magnum models not listed above.
If you're unsure, simply send us photos of your battery and we’ll confirm compatibility.
🔋 Upgrade Options
Don’t just restore—upgrade.
Magnum batteries are excellent candidates for upgrades using premium cells such as Samsung, LG, or Molicel.
Upgrade benefits:
- Increased range per charge
- Improved power delivery and consistency
- Reduced voltage sag under load
- Extended lifespan (typically 3–5 years with proper care)
🧪 Diagnostics & Testing
Every battery goes through a comprehensive in-house process:
- Initial inspection and diagnostics
- Precision rebuild with matched cells
- BMS functionality evaluation
- Full charge/discharge testing before shipment
⚠️ Important Notes on Magnum Batteries
Magnum batteries are generally serviceable, but like many modern systems, they may include smart BMS electronics.
- If the issue is related to the BMS or communication system, repair options may be limited
- In such cases, we’ll provide clear diagnostics and honest next-step recommendations
📦 How the Process Works
1. Fill Out Intake Form
Complete the Battery Service Intake Form
2. Ship Your Battery
Send your battery (charger recommended but optional)
3. Evaluation & Invoice
We inspect and confirm final pricing if not prepaid
4. Rebuild & Test
Your battery is rebuilt, balanced, and tested
5. Return Shipment
We ship your battery back with tracking information
⏱ Turnaround Time
- Current estimate: 6–8 weeks
- Expedited service available upon request
💰 Pricing
- Typical rebuild cost: $499 – $650
- Final cost depends on battery size, condition, and upgrade level
- Return hazmat shipping: typically $50–$60
✅ Why Choose EMP?
- U.S.-based battery specialists
- Premium lithium-ion cells only
- Honest diagnostics and transparent communication
- Proven experience across a wide range of e-bike systems
🚫 Please Note
- This is a battery rebuild service, not a new battery purchase
- You must send in your original Magnum battery
- We do not typically stock ready-to-ship Magnum batteries
🔧 Battery Rebuild Service
We rebuild your existing battery using fresh, high-quality cells to restore or increase capacity and performance.
- Full disassembly, rebuild, and testing
- Upgraded capacity options available
- Uses brand new name-brand cells
- Turnaround time: Approximately 14 business days
- Timeline includes the time it takes for us to receive your battery and complete the rebuild
⚡ Custom Battery Builds
Fully custom battery solutions designed to meet your exact specifications. This is ideal for unique applications or when a standard battery will not fit your needs.
- Custom shapes and sizes
- Custom BMS (Battery Management System) configurations
- Choice of cells and performance levels
- Option for enclosed case or raw (naked) pack
- Built specifically for your application
- Turnaround time: Approximately 21 business days
🔋 Battery Packs (Encased)
Battery packs built using one of our in-stock cases. These are a great option if you want a reliable, ready-to-fit solution.
- Uses pre-designed cases from our inventory
- Proven, reliable configurations
- Faster than fully custom builds
- Turnaround time: Approximately 14 business days
🔬 Battery Cells (Individual Cells)
We supply high-quality lithium-ion cells for repairs, upgrades, and custom builds.
- In-stock cells: Ship within 3–6 business days
- Out-of-stock (air shipping): Approximately 10 business days
- Out-of-stock (sea shipping): Approximately 40 days
📦 Shipping & Intake Process
- Place your order or request a quote
- Fill out our Battery Intake Form
- Send in your battery (include charger and key if required)
- We inspect and test your battery
- We contact you with results and recommended options
Important Information
Turnaround times begin once your battery is received and checked into our system.
During high demand periods or for complex builds, timelines may be slightly extended.
Shipping Method
- All batteries are shipped via ground service only (FedEx or UPS) in compliance with DOT and IATA regulations for lithium batteries.
- Expedited air shipping is not available for lithium battery products.
Delivery Time
- Ground shipping typically takes 3–7 business days within the U.S.
- Tracking information will be provided as soon as your order ships.
Local Pickup
- Pickup is available at our Las Vegas facility:
4856 Judson Ave Suite 155 Las Vegas, NV 89115
Monday– Thursday, 9:00 AM – 4:00 PM ( Friday by appointment).
Returns
- Returns are accepted within 14 days of delivery on unused, unopened batteries.
- For rebuilds and custom packs, all sales are final unless defective.
Important Notes
- Shipping is limited to the continental United States.
- Customers are responsible for providing a valid shipping address — carriers cannot deliver to P.O. Boxes.
- Signature may be required at delivery for higher-value battery orders.
