Electric car batteries & parts

Electric car batteries and parts: how to find and buy them

Updated 20 October 2026

Electric car parts: what people look for most

An electric car has no combustion engine, but it has its own “insides”: the traction battery (an assembly of modules and cells), the battery management system (BMS), the on-board charger, the inverter, the DC-DC converter, the charging port and the electric motor. The most expensive and popular item is the battery or its individual modules, because often only one module is faulty, not the whole pack.

How to search through BlaBlaPrice

A rare part for an electric car can take a long time to find through listings. On BlaBlaPrice you describe what you need once, and dismantlers and specialist workshops reply in the chat: what they offer, in what condition, at what price and when they can ship. They see where their offer stands among others, so they compete on terms. Contacts stay hidden until you choose a seller yourself. Details are on the “How it works” page.

What to put in your request

• Which part — battery pack, modules, BMS, charger, inverter, port.
• Make, model, year and body — for example, Nissan Leaf, 2022.
• Battery capacity — in kWh: versions are not compatible with each other.
• Quantity — how many modules or cells.
• Condition — new, used from a donor car, or reconditioned; for batteries, SOH (state of health) above a certain percentage.
• Part number — from the sticker on the part or from the catalogue.
• Fitting — replacement, balancing, firmware or programming.
• Delivery city and budget.

Example: “I need 4 battery modules for a Nissan Leaf, 2022. Used, SOH not below 90%, with a document showing the measurement. Replacement with balancing needed. Courier delivery to Kowloon, budget up to HK$11,000.”

How to compare offers

For a battery, what matters is not the year but its real condition. Ask for a diagnostic report with the SOH and the voltage spread between cells: if the difference is large, the module will “sag” quickly. Ask how many charge cycles it has had and whether the battery was in an accident or under water. For electronics (inverter, charger), the part number and the firmware version matter. Also check whether there is a warranty and who gives it, and how the unit is packed and shipped, because high-voltage parts are sensitive.

Common mistakes and safety

Buying modules of a different capacity version. Ignoring the firmware: a new part sometimes does not “see” the unit without programming. Taking the traction battery apart yourself: the voltage is dangerous and only specialists should do it. If you are looking for ordinary parts, see car parts, and for the cabin system see car air conditioning and heating.