Surface604 | Battery Rebuild
🔋 604surface (Surface 604) E-Bike Battery Rebuild Service
Restore your Surface 604 battery to like-new performance—or upgrade it for more range and stronger output.
At EMP, we specialize in rebuilding 604surface (Surface 604) e-bike batteries using premium lithium-ion cells and professional assembly techniques. Whether your battery is no longer holding a charge or you’re looking to extend your ride time, we’ve got you covered.
⚙️ What We Do
We rebuild your existing Surface 604 battery, replacing all internal cells while keeping the original case and fitment intact.
- Complete internal cell replacement
- Optional capacity upgrades
- Retains original mounting system and connectors
- Fully tested before return shipment
🔋 Upgrade Options
Don’t just restore—upgrade.
Surface 604 batteries are excellent candidates for increased capacity using high-quality cells such as Samsung, LG, or Molicel.
Upgrade benefits:
- Increased range per charge
- More consistent power delivery
- Reduced voltage sag under load
- Longer lifespan (typically 3–5 years with proper care)
🧪 Diagnostics & Testing
Every battery goes through a thorough process:
- Initial inspection and diagnostics
- Precision cell matching and rebuild
- BMS functionality evaluation
- Full charge/discharge testing prior to shipment
⚠️ Important Notes on Surface 604 Batteries
Surface 604 batteries are generally serviceable, but like most modern e-bike 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 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
⏱ Turnaround Time
- Current estimate: 6–8 weeks
- Expedited service available upon request
💰 Pricing
- Typical rebuild cost: $450 – $650
- Final price depends on battery size and upgrade level
- Return hazmat shipping: typically $50–$60
✅ Why Choose EMP?
- U.S.-based battery specialists
- Premium-grade lithium-ion cells only
- Transparent diagnostics and 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 Surface 604 battery
- We DO typically stock replacements for this brand
Original: $599.99
-65%$599.99
$210.00Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
🔋 604surface (Surface 604) E-Bike Battery Rebuild Service
Restore your Surface 604 battery to like-new performance—or upgrade it for more range and stronger output.
At EMP, we specialize in rebuilding 604surface (Surface 604) e-bike batteries using premium lithium-ion cells and professional assembly techniques. Whether your battery is no longer holding a charge or you’re looking to extend your ride time, we’ve got you covered.
⚙️ What We Do
We rebuild your existing Surface 604 battery, replacing all internal cells while keeping the original case and fitment intact.
- Complete internal cell replacement
- Optional capacity upgrades
- Retains original mounting system and connectors
- Fully tested before return shipment
🔋 Upgrade Options
Don’t just restore—upgrade.
Surface 604 batteries are excellent candidates for increased capacity using high-quality cells such as Samsung, LG, or Molicel.
Upgrade benefits:
- Increased range per charge
- More consistent power delivery
- Reduced voltage sag under load
- Longer lifespan (typically 3–5 years with proper care)
🧪 Diagnostics & Testing
Every battery goes through a thorough process:
- Initial inspection and diagnostics
- Precision cell matching and rebuild
- BMS functionality evaluation
- Full charge/discharge testing prior to shipment
⚠️ Important Notes on Surface 604 Batteries
Surface 604 batteries are generally serviceable, but like most modern e-bike 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 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
⏱ Turnaround Time
- Current estimate: 6–8 weeks
- Expedited service available upon request
💰 Pricing
- Typical rebuild cost: $450 – $650
- Final price depends on battery size and upgrade level
- Return hazmat shipping: typically $50–$60
✅ Why Choose EMP?
- U.S.-based battery specialists
- Premium-grade lithium-ion cells only
- Transparent diagnostics and 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 Surface 604 battery
- We DO typically stock replacements for this brand
