Battery Repairs for Electric Cars & Hybrids

The traction battery is the most important and expensive component in an electric or hybrid vehicle. Swedish Experts provides professional battery repairs for electric cars, including hybrid battery repair and lithium ion battery repair for a wide range of EV and hybrid models.

Whether your EV has lost range, your hybrid shows battery warnings, or you’ve noticed reduced performance and poor fuel economy, our high-voltage team diagnoses the pack, modules and Battery Management System (BMS) to recommend safe and cost-effective repair, reconditioning or replacement options.

What We Do: Battery Repairs for Electric & Hybrid Vehicles

Lithium-Ion EV Battery Repair	Hybrid Battery Repair & Reconditioning	BMS, Cooling & Safety Checks
Modern electric cars use high-voltage lithium-ion packs. Our lithium ion battery repair services include cell and module diagnostics, detection of weak groups, contactor and wiring checks, cooling system inspection and integration with the BMS and inverter. Ideal for EVs with reduced range, sudden shutdowns or charging problems.	For Toyota, Lexus, Honda and other hybrids, hybrid battery repair focuses on identifying weak modules, rebalancing the pack and restoring usable capacity where possible. We also clear hybrid system errors and verify that the engine and electric drive blend smoothly again. Recommended when the hybrid warning light appears, fuel consumption rises, or the car relies more on the engine.	Any battery repair is linked to the Battery Management System and cooling circuits. We check BMS communication, temperature sensors, cooling pumps and fans, then perform controlled tests to ensure the pack operates safely after repairs or reconditioning. Essential for long-term reliability and safe EV or hybrid operation.

Battery Repair & Reconditioning Packages

Package	What’s Included	Best For	Typical Time
High-Voltage Battery Health Check	Full diagnostic scan of the high-voltage system, BMS data review, cell/ module voltage spread, temperature checks and visual inspection where accessible	EV or hybrid owners who notice warnings, reduced range or unusual behaviour	~1–2 hours
Hybrid Battery Repair & Reconditioning	Hybrid battery repair, module testing, replacement of weak modules (where feasible), balancing procedures, clearing hybrid errors and road test	Hybrids with battery warning lights, poor economy or reduced electric assist	Half day to 1 day (model-dependent)
EV Lithium-Ion Battery Repair & Optimization	Advanced lithium ion battery repair, cell/module diagnostics, contactor and harness checks, cooling system inspection, BMS calibration guidance and post-repair validation	Fully electric cars with strong range loss, charging issues or stored battery faults	1–3 days (depending on complexity and access)

Not every pack can be safely repaired or reconditioned. After diagnosis, we explain whether hybrid battery repair or lithium ion battery repair is realistic, or if full replacement is the only safe option.

Why High-Voltage Battery Work Needs Specialists

High Voltage & Safety

Traction batteries operate at dangerous voltages. All battery repairs for electric cars are performed with isolation procedures, PPE, insulated tools and lockout/tagout practices to protect both technicians and your vehicle.

Complex Pack Design

EV and hybrid packs combine hundreds of cells, cooling systems, contactors and monitoring circuits. Effective lithium ion battery repair or hybrid battery repair requires understanding the full system – not just swapping parts.

BMS Integration

Even the best physical repair must be aligned with the BMS. We use EV-capable diagnostic tools and procedures to help the Battery Management System relearn capacity, balance cells and set correct limits.

Our Battery Repair & Reconditioning Process

Initial Assessment: Discuss symptoms – warnings, range loss, performance changes – and review vehicle history.
Diagnostic & Data Capture: Scan HV and hybrid systems, read BMS data, cell voltages and pack temperature distribution.
Safety Isolation: Safely isolate the high-voltage system before any physical work on the battery pack.
Pack Inspection & Testing: Inspect modules and connections, test suspect groups and decide on repair vs replacement options.
Repair / Reconditioning: Apply hybrid battery repair or lithium ion battery repair processes, replace components where needed and reassemble with correct torque and sealing.
Commissioning & Validation: Reconnect the system, clear faults, verify BMS readings and perform a controlled test drive or stationary test cycle.

After repairs, we explain how to monitor the vehicle’s behaviour, what improvements to expect and when a follow-up health check is recommended.

EV & Hybrid Vehicles We Work With

Our battery repairs for electric cars and hybrid battery repair services cover many popular models:

Tyota / Lexus hybrids
Honda hybrids
Hyundai & Kia hybrids/EVs
Nissan Leaf & other EVs
BMW i-Series
Mercedes-Benz EQ & plug-in hybrids
Audi e-tron & plug-in hybrids
Volkswagen ID & GTE
Volvo / Polestar
BYD and Chinese-brand EVs

When Does Your EV or Hybrid Need Battery Repair?

Hybrid or EV warning light on the dashboard.
Noticeable drop in electric range or fuel economy.
Engine in a hybrid running more often than before.
Car entering limited-power or “turtle” mode frequently.
Charging time or behaviour changed without obvious reason.
Vehicle shuts down or refuses to start due to HV errors.
Battery pack or modules replaced by another workshop without improvement.
The car has spent long periods parked with very low or very high state of charge.
You plan to buy or sell an EV and want a realistic battery health assessment.

Why EV & Hybrid Owners Choose Swedish Experts for Battery Repair

High-Voltage Battery Focus	Advanced Diagnostics	Strict Safety Protocols
Dedicated team specialising in traction batteries, not just 12V systems.	EV-ready tools for cell-level data, BMS information and pack behaviour analysis.	Insulated tools, isolation procedures and PPE for every job.
Honest Repair vs Replace Advice	Focus on Longevity	Planned Timelines
If repair or reconditioning isn’t safe or worthwhile, we say so clearly.	Recommendations to help extend pack life and avoid repeat failures.	Realistic expectations for diagnostics, repair and testing time.

FAQ

What is the difference between hybrid battery repair and EV battery repair?

Hybrid battery repair usually involves working on smaller packs that assist the engine, often using modules that can be tested and replaced individually. EV-focused lithium ion battery repair deals with large traction packs that provide full driving power, typically requiring more complex diagnostics and safety procedures.

Can every high-voltage battery be repaired or reconditioned?

No. Some packs are too degraded, damaged or unsafe to repair. After diagnostics, we explain if battery repairs for electric cars are realistic for your case, or if a full replacement is the only safe option.

Will repair fully restore my original range?

If the main issue is a few weak modules or BMS estimation errors, you may see a noticeable improvement. However, normal ageing cannot be reversed. Our goal is to stabilise behaviour and maximise remaining capacity, not to promise “as new” performance if the pack is already old.

Is it safe to keep driving with a battery warning light?

In many cases, continuing to drive can increase damage or trigger sudden power loss. If you see a high-voltage or hybrid battery warning, it’s best to arrange diagnostics quickly and avoid long or high-load trips until the cause is understood.

What information do you need before booking?

Helpful details include vehicle make, model, year, mileage, recent warning messages, typical driving and charging patterns, and any previous work related to hybrid battery repair or lithium ion battery repair. This allows us to plan diagnostics more efficiently.

Book Battery Repairs for Your Electric or Hybrid Vehicle

If your EV or hybrid shows battery warnings, reduced range or unstable behaviour, professional battery repairs for electric cars may help. Swedish Experts is ready to diagnose, advise and, where safe, perform hybrid battery repair and lithium ion battery repair tailored to your vehicle.