PESU Battery Rebuild Services

Professional PESU E-Bike Battery Rebuild & Repair

If your PESU electric bike battery has lost range, won't charge, shuts off unexpectedly, or no longer powers your bike, EMP can help. We specialize in rebuilding original PESU lithium-ion battery packs using premium Grade-A cells while retaining your factory battery housing whenever possible.

Many PESU bicycles are built with quality frames and components that can provide years of reliable service. Unfortunately, lithium-ion batteries naturally lose capacity over time. Rather than replacing your entire e-bike—or searching for a discontinued OEM battery—our rebuild service restores your existing battery with new cells designed for dependable performance.

Whether you ride your PESU for commuting, recreation, trail riding, or everyday transportation, our technicians can evaluate your battery and recommend the best rebuild solution.

PESU Battery Models We Service

EMP services many styles of PESU lithium-ion battery packs, including:

• Downtube Batteries
• Rear Rack Batteries
• Integrated Frame Batteries
• Semi-Integrated Batteries
• Removable Battery Packs
• Custom Battery Configurations

If your exact battery isn't shown on our website, don't worry.

Simply send us:

• Photos of your battery
• Battery label
• Charger label
• Bike model
• Connector photos

Our technicians will identify your battery and confirm whether it can be rebuilt or upgraded.

Common PESU Battery Problems

Most batteries arrive with one or more of these symptoms:

• Reduced riding range
• Battery won't charge
• Battery charges unusually fast
• Charger immediately turns green
• Battery shuts off while riding
• Loss of power under heavy acceleration
• Battery won't power the display
• Deep discharge after long-term storage
• Water or moisture damage
• Aging battery with significantly reduced capacity

Many of these issues are caused by worn lithium-ion cells, while others may involve the battery management system (BMS) or internal wiring. Every battery is professionally evaluated before repairs begin.

Our Professional Battery Rebuild Process

Every PESU battery rebuild includes a comprehensive inspection and testing process.

Our technicians perform:

• Initial diagnostic testing
• Voltage and capacity evaluation
• Battery disassembly
• Complete replacement of lithium-ion cells
• Cell balancing and matching
• BMS inspection
• Internal wiring inspection
• Connector verification
• Safety testing
• Capacity testing
• Load testing
• Final quality control

Each battery is tested before shipment to ensure safe and reliable operation.

Premium Lithium-Ion Cell Upgrades

Battery technology has improved dramatically over the last several years.

When rebuilding your PESU battery, we use premium Grade-A lithium-ion cells from trusted manufacturers such as:

• Samsung
• LG Energy Solution
• Panasonic

Depending on your battery case and internal configuration, we may also be able to increase the overall amp-hour capacity for longer riding range.

Every upgrade is evaluated individually to ensure safety and compatibility.

Why Riders Choose EMP

Thousands of battery repairs completed

Premium Grade-A lithium-ion cells

Professional battery diagnostics

Capacity upgrade options

Nationwide mail-in service

Experienced battery technicians

Comprehensive battery testing

1-Year Warranty

Located in Las Vegas, Nevada

Our goal is simple: restore your original battery whenever it is practical and cost-effective.

Before Shipping Your Battery

Before placing an order, we recommend sending us a few photos so we can verify compatibility.

Please include:

• Battery
• Battery label
• Charger label
• Connector
• Bike model

This allows our technicians to recommend the correct rebuild service before you ship your battery.

Can't Find Your PESU Battery?

Our website continues to grow, and new rebuild services are added regularly.

If your battery isn't listed yet, contact our team. We can often identify the battery from photos and create a rebuild option specifically for your model.

Browse PESU Battery Rebuild Services Below

Select your battery model below to learn more about compatible rebuild options, available capacity upgrades, estimated turnaround times, and shipping instructions.

If you are unsure which battery you own, contact EMP before ordering—we're happy to help identify your battery and recommend the correct service.