FabiRide workshop - Kaunas · 01

Battery repair- lithium battery diagnostics, faulty cell group replacement and BMS repair

In the FabiRide workshop in Kaunas we carry out professional battery repair - from precise diagnostics to replacing a failed cell group when the rest of the pack is still healthy. We repair battery packs for e-bikes, e-scooters and electric motorcycles (Sur-Ron, Talaria) and fix BMS boards; if a pack is simply worn out, we recommend a new or rebuilt battery instead.

Diagnostics
Group replacement
BMS repair
New battery

Send your pack for diagnostics Kaunas workshop · EU mail-in service

Lithium battery diagnostics and repair in the FabiRide workshop in Kaunas — **Fig. 01** - Lithium battery diagnostics Ref · cells / BMS

Scope of service/ 02

What battery repair covers

Everything starts with precise diagnostics: when only one cell group has failed and the rest of the pack is healthy, we replace it; when the pack is worn out, we offer a new or rebuilt battery. These are the jobs we carry out in the FabiRide workshop in Kaunas.

Battery diagnostics

A full pack inspection: cell group voltage balance, internal resistance, BMS status and real capacity measurement. Before any repair we identify the exact cause of the fault and set out a plan.

Diagnostics

Cell group replacement

When one cell group fails while the rest of the pack is still healthy, we replace exactly that faulty group with matched lithium cells (18650, 21700 and other formats), rebuild the connections by spot welding and balance the whole pack so the load is shared evenly.

Group

BMS repair

We repair and replace battery management systems (BMS): protection trips, charging faults and communication errors in cases where the pack will not switch on, will not charge or shuts down suddenly.

BMS

New or rebuilt battery

When range drops because the whole pack has aged, partial cell replacement will not solve it. In that case the honest answer is a new or rebuilt battery. FabiRide designs and builds custom lithium packs, so we can offer a suitable replacement battery.

New pack

Casing and connectors

We repair damaged casings, connectors and wiring, and make sure the pack is sealed and neatly assembled so that after the repair it is protected from moisture and vibration.

Casing

Testing and assembly

After the repair we run a charge-discharge test and check the protections and temperature under load. We only return a pack once we are satisfied that it works stably and safely.

Test

Voltage· Internal resistance· Capacity· Temperature· BMS status

Repair protocol/ 03

How a battery repair works

Every pack follows the same clear path - from arrival to a tested, safe result.

01
Arrival
You send the pack to our workshop in Kaunas from anywhere in the EU.
02
Diagnostics
We measure the cells and the BMS, identify the fault and set out a repair plan.
03
Repair
We replace the faulty cell group, repair or replace the BMS and connectors; if the pack is worn out - we offer a new or rebuilt battery.
04
Testing
We run a charge-discharge test and check the protections and temperature under load.
05
Return
We ship the finished, tested battery back to you with usage recommendations.

Documentation/ 04

Battery repair up close

A few moments from the workshop: cell replacement, BMS checks and lithium battery pack assembly.

E-bike lithium battery repair and cell replacement in the FabiRide workshop — **Fig. 02** · Cell replacement18650 / 21700

Battery BMS board diagnostics and repair at the FabiRide workshop — **Fig. 03** · BMS checkController

E-scooter battery teardown and state-of-health diagnostics — **Fig. 04** · Health diagnosticsTest

Engwe range extender battery repair in the FabiRide workshop in Kaunas — **Fig. 05** · Engwe batteryPack

Engwe battery lithium cell replacement and pack assembly — **Fig. 06** · Pack assemblyAssembly

Why FabiRide/ 05

Why trust us with your pack

Lithium battery repair demands precision and responsibility. These are the principles we apply to every pack.

P.01

Safety - the first priority

Lithium batteries do not forgive mistakes. We work carefully, weld the connections cleanly and test every pack before it goes back.

P.02

Precise diagnostics

We never guess at a fault. We measure cell group voltages, internal resistance and BMS parameters - only then do we propose a repair solution.

P.03

Quality lithium cells

We use cells from trusted manufacturers and proper spot welding - not temporary patches, but a lasting, tidy solution.

P.04

We solve BMS faults

We repair and replace battery management boards in cases where the pack will not switch on, will not charge or shuts down suddenly.

P.05

We stand behind our work

We provide a warranty on every battery repair and only send a pack back once we are satisfied that it works safely.

P.06

Kaunas workshop, EU mail-in

Our workshop is based in Kaunas, and we receive and repair packs sent in by customers from across the EU.

Common questions/ 06

FAQ about battery repair

Answers to the most common questions about lithium battery diagnostics, cell group replacement and new or rebuilt batteries.

01Is it worth repairing a battery, or better to buy a new one?

Repair makes sense when only one cell group or the BMS has failed and the rest of the pack is still healthy - replacing that part is far less involved than a whole new battery pack. If the pack is worn out through age, partial replacement will not bring the range back, so the more honest solution is a new or rebuilt battery. We can answer precisely after diagnostics, when we can see the real condition of the pack and compare the options.

02Which batteries do you repair?

We repair lithium batteries for e-bikes, e-scooters and electric motorcycles, including Sur-Ron, Talaria and packs from various manufacturers (Engwe, for example). We work from Kaunas and accept packs sent in from across the EU.

03When is a cell group replacement right, and when a new battery?

A lithium battery is made up of cell groups. If one group fails while the rest of the pack is still healthy, we replace exactly that faulty group and rebalance the pack. But if the pack is simply worn out and range is dropping through age, partial cell replacement will not solve it - then the honest solution is a new or rebuilt battery, which we design and build ourselves. Diagnostics show which case is yours.

04My battery will not switch on or charge - can you fix it?

Yes. Most often the cause is a tripped BMS protection, deeply discharged cells or a damaged connector. During diagnostics we establish the real cause and, depending on the fault, repair or replace the BMS or replace the damaged cells.

05How do I send my battery in for repair?

Start by describing the fault and the battery model. We will confirm whether the pack is suitable for a mail-in repair and explain how it should be packed and labelled for safe transport to our workshop. Once it arrives, we run diagnostics and set out the repair plan before any work begins.

06Is a repaired battery safe to use?

Yes, when the repair is done properly. After cell replacement we balance the pack, check the BMS protections and run a charge-discharge test plus a temperature check under load. We only return a pack once we are satisfied that it works stably and safely.

Order sheet · Workshop intake Accepted

Contacts / 07

Send your battery in for diagnostics

Describe the fault and give us the battery model - we will assess whether a repair is worthwhile and explain the next steps. We work from our Kaunas workshop and accept packs from across the EU.

Contact FabiRide

We also serve and ship to other EU countries.

Workshop: FabiRide
City: Kaunas
Division: Lithium batteries
Coverage: EU-wide

FabiRide · Battery repair · Kaunas · Lithuania

Battery repair- lithium battery diagnostics, faulty cell group replacement and BMS repair