Battery Pack & Modules

The question to answer first is whether the problem is the whole pack or one module inside it, and only diagnostic data settles that. A workshop with proper access can see per module voltages and temperatures, isolation values and the fault history. Where one module sits consistently below its neighbours, module level repair is often possible and costs a small share of a full assembly. Where capacity has fallen evenly across every module, that is ordinary ageing. Bring the report with you when you enquire, since it decides which references are worth quoting.

On older module based packs, sometimes, and it is manufacturer level work requiring training, equipment and a suitable facility. On current cell to pack designs, where cells are bonded directly into the enclosure, module replacement is effectively impossible. That is why this category lists complete packs. In markets where professional refurbishment services exist they can be worth investigating, and they are a specialist route rather than something a general workshop or an owner should attempt.

Not outside a properly equipped and trained environment, and this is not a caution to be brave about. Packs operate at voltages that are lethal, they store enormous energy that cannot be switched off, damaged cells can enter thermal runaway, and the correct response to several failure modes involves equipment most workshops do not have. Isolation, verified zero voltage, insulated tooling and specific training are minimum requirements. Assessment, removal and fitting all belong to a qualified workshop.

Time and temperature more than mileage. Cells age chemically whether used or not, and that ageing accelerates at high temperature and at high states of charge, which is why leaving a car at full charge in summer heat is harder on it than driving it. Frequent rapid charging adds heat and contributes. Deep discharges are also unhelpful. Chemistry matters too, with iron phosphate cells generally tolerating full charging better than nickel manganese cobalt cells do.

It is the single most valuable component on the vehicle by a wide margin, and it is quoted rather than priced as a standing listing because value, availability and freight all move. The live range for the category is shown in the band at the top of this page. Before ordering, it is worth exploring whether the fault is genuinely the pack rather than a cooling, contactor or management fault, since those are far cheaper and produce similar symptoms.

Under dangerous goods rules, which govern packaging, documentation, routing and which carriers and destinations are available. That affects both lead time and cost, and it means a pack cannot travel every route a normal part can. Expect the quote to include those constraints. It also means the old pack has a regulated destination, whether return to the supplier, recycling or a second life route, so establish what happens to it as part of arranging the replacement.

Yes. A replacement pack has to be paired with the vehicle so that the management system, the charging strategy and the range calculation all reference the correct capacity and chemistry, and on many vehicles the pack and the vehicle exchange identifiers that must be registered. Skipping that leaves a vehicle that either refuses to close its contactors or reports and behaves incorrectly. Confirm your workshop has the access and software before ordering.

It depends on chemistry and use. Nickel manganese cobalt packs generally prefer to spend most of their time in a middle band, so daily charging to around eighty per cent and going higher only before a long journey is kinder. Iron phosphate packs tolerate full charging and in fact benefit from a periodic full charge, which lets the management system recalibrate its state of charge estimate. Follow the manufacturer's guidance for your vehicle rather than a general rule.

Inspection before anything else. A strike that reached the enclosure can crack it, deform it, or damage cooling paths in ways that are not visible, and the consequences appear later rather than immediately. A qualified workshop measures insulation resistance, examines cell voltages and temperatures for outliers and inspects the enclosure against the manufacturer's criteria. Where the housing is breached or deformed, replacement rather than repair is the normal outcome, which is why prompt assessment matters.

Only where the OE number on the old pack agrees. Capacity, chemistry, cell configuration, software and mounting all follow the specific build, and a pack of different capacity changes the vehicle's range calculation, charging strategy and sometimes its structure. Fitting a mismatched pack either refuses to pair or behaves unpredictably. Have the reference confirmed against your vehicle before anything is arranged, since this is not a part to send back.

Most manufacturers provide separate battery cover for capacity below a defined threshold for a stated period or mileage, which is distinct from the cover on the rest of the vehicle. Terms vary, and normal gradual degradation above the threshold is generally excluded. If your vehicle is within that period and the state of health report shows capacity below the stated figure, raise it with the manufacturer before ordering anything, since the assessment you need is the same either way.

Yes, and quoting is the only sensible route for this part. Every reference exists in the factory catalogue under its OE number, and packs are never listed at a standing price because value, availability and dangerous goods transport all vary by destination and date. Press request a quote and a current figure comes back with availability and shipping constraints. Send the OE number from the old pack and the state of health report with the request.