A new battery pack costs between 5,500 and 22,000 € before fitting, depending on the model, and 1,500 to 4,000 € when a single module is at fault. Under warranty, the bill is nil. Out of warranty, it can exceed the value of a five-year-old used car.

A pack is worth 99 dollars a kWh, the invoice says far more

In its press release of 9 December 2025, BloombergNEF measured an average price of 99 dollars per kWh for electric car packs: 81 for LFP, 128 for NMC. No Belgian owner ever sees those figures.

They see a quote. The one for a 60 kWh Renault Mégane E-Tech, surveyed in July 2025 by fiches-auto.fr (page updated on 24 September 2026), shows 20,600 € including VAT for the new pack, labour extra: 343 € per kWh. An exchange unit comes to 14,416 €, or 240 € per kWh. For a 52 kWh Zoé, Redion gave about 8,500 € in April 2024, or 163 € per kWh.

Setting the exchange rate aside: between 163 and 343 euros a kWh at the garage and 99 dollars at the factory, the gap is around double, sometimes triple. It pays for logistics, diagnosis, fitting and margin. I found no breakdown published by any manufacturer.

How much does a replacement battery cost, model by model?

From 5,500 € for a Nissan Leaf to 22,000 € for a long-range Tesla Model 3, new pack, before fitting. The table reproduces a price table published on 15 May 2026.

ModelCapacities coveredNew packFittingRefurbished pack
Renault Zoé22 to 52 kWh7,400 to 9,500 €500 to 1,500 €3,000 to 5,000 €
Nissan Leaf24 to 62 kWh5,500 to 13,000 €800 to 1,500 €4,000 to 7,000 €
Volkswagen ID.345 to 77 kWh9,000 to 14,000 €1,000 to 2,000 €6,000 to 9,000 €
Hyundai Kona Electric39 to 64 kWh12,000 to 20,000 €1,000 to 2,000 €rare
Citroën ë-C344 kWh LFP8,000 to 10,000 €1,000 €emerging
Tesla Model 350 to 82 kWh13,000 to 22,000 €2,000 to 3,000 €8,000 to 12,000 €

Source: isiohm.fr table, updated on 15 May 2026. A preliminary diagnosis costs 150 to 200 €.

Per kWh, the table holds a surprise. The LFP Citroën ë-C3, 44 kWh at 8,000 to 10,000 €, comes to 182 to 227 € a kWh. The NMC Zoé, 7,400 to 9,500 € for 52 kWh, is around 142 to 183 €. The LFP cells' advantage, 81 dollars a kWh against 128 for NMC according to BloombergNEF, has not yet reached the garage counter.

These ranges are wide, and no two price tables ever match exactly. In December 2024, Mac4Ever collected, from sales staff and owners, 10,000 to 16,600 € for a Model 3, 12,000 to 16,000 € for a Peugeot e-208 and 5,000 to 7,000 € for a Dacia Spring, and warned that these prices "are in no way guaranteed". Its figures exclude labour.

One awkward point: all these tables come from France. No manufacturer publishes a Belgian price, and I found none in the country's specialist press either. Take these amounts as orders of magnitude, never as a budget.

Exchange unit, modules, refurbished: a new pack is not the only door

The Mégane E-Tech shows it: the 14,416 € exchange unit costs 70% of the new pack. Your pack is taken back, reconditioned, and you keep the warranty of a checked product.

Lower still, the module. A failed battery is not necessarily a worn one, and when a cell fails it is often a single module that needs changing, for 1,500 to 4,000 € according to the May 2026 table. The diagnosis, 150 to 250 € at Mac4Ever, is compulsory anyway. Some manufacturers repair by module, others sell only the complete pack: the answer depends on the model, and only a written quote settles it.

That leaves the refurbished pack, advertised at 30 to 50% below the manufacturer's new price by the same table, which is a battery reseller's: read it as a sales claim. On an out-of-warranty car it is nonetheless the only route that keeps the bill below the value of the car, provided you get the repairer's warranty term in writing. Also ask who bears the risk if the refurbished pack fails after the first year.

When the bill exceeds the value of the car

Set the pack against what the car is worth, and the calculation changes nature. I took the Belgian used prices surveyed on 25 September 2026 for our ranking of the best used electric cars and set them against the new pack plus fitting ranges.

Belgian used carValue surveyed 25/09/2026New pack and fittingShare of the car's value
Nissan Leaf 40 kWh9,200 €6,300 to 14,500 €68% to 158%
Hyundai Kona Electric 64 kWh17,799 €13,000 to 22,000 €73% to 124%
Peugeot e-208 50 kWh12,600 €12,000 to 16,000 €, fitting excluded95% to 127%
Volkswagen ID.3 58 kWh15,500 €10,000 to 16,000 €65% to 103%
Tesla Model 3 Standard Plus26,250 €15,000 to 25,000 €57% to 95%
Renault Zoé R135 52 kWh13,850 €7,900 to 11,000 €57% to 79%

In-house calculation. Pack ranges from the 15 May 2026 table, except the e-208 (Mac4Ever, December 2024, fitting excluded). They cover every capacity of the model: the car surveyed may sit on either side.

This table does not say these cars are to be avoided: a Zoé or an ID.3 still under warranty will never cost you these amounts. It says what a breakdown becomes the day the warranty ends.

Four cars out of six pass 100% at the top of the range, and none falls below 57% at the bottom. In other words, depending on the quote, the new pack is worth between half and all of the used car it would save.

The Leaf is the starkest case. The example surveyed at 9,200 € has no battery warranty left. A 6,300 € pack at best, fitted, would have you paying two thirds of the car to bring it back to the level of a car you can find cheaper elsewhere.

Newer cars do no better on paper, but they keep their warranty. Among the seven used cars in the ranking, remaining battery warranty ran from 35 months on the Kia e-Niro to zero on the Leaf: that counter, far more than the price range, decides the real risk.

An extrapolation, not a quote: applied to the 15,500 € Volkswagen ID.3, the 30% discount of Renault's exchange unit would bring pack and fitting from 10,000 to 16,000 € down to roughly 7,300 to 11,800 €, or 47% to 76% of the car. Better. Still not a bargain.

My rule, which you are free to contest: I would never replace a full new pack on a used car over five years old. I would look for a module, an exchange unit, or I would change car.

Should you really expect to replace your battery?

No, in the vast majority of cases. About 2.5% of the electric cars analysed by Recurrent, over 20,000 vehicles as relayed by InsideEVs, had already changed battery, with an enormous gap by age: about 33% of 2011 models, 13% of those before 2015, and 1% or less for 2016 and later. Older chemistries and air cooling explain most of it.

Ordinary degradation stays slow. Geotab followed over 22,700 cars across 21 models and published on 28 April 2026 an average loss of 2.3% a year, or 81.6% of capacity after eight years. Fast charging makes the difference: 3.0% a year for heavy users of chargers above 100 kW against 1.5% for infrequent ones, roughly 76% against 88% at eight years. A hot climate adds 0.4 points a year. The October 2025 Car-Pass study (Belgium's vehicle history report) uses 1.8% a year for Belgium and a lifespan of 10 to 15 years.

Against this, the typical warranty is 160,000 km or 8 years, again according to Car-Pass. The manufacturer-by-manufacturer detail, with the 70% threshold and Renault's 66% exception, is in our article on battery warranty, and the mechanics of the loss in the one on degradation.

A paid replacement therefore concerns a narrow profile: an out-of-warranty car, an older chemistry, or a flooded or crashed battery.

Zoé battery on rental: 1 € or 2,000 €?

The most tangled Belgian case is that of the first Zoés, sold with the battery on rental.

A complaint filed on Test-Achats (the Belgian consumer association) describes the contract of a 2016 Zoé: 79 € of rent a month, and a battery buy-out price that went from 1,939 € in October 2023 to 2,000 € in May 2024, justified by a European recycling directive that came into force on 1 May 2024. That is a consumer's account, not an official price list.

On 15 June 2026, Selectra reported that Mobilize Financial Services was offering Belgian owners to buy out their battery for 1 euro excluding VAT, with no published eligibility criteria. I found that offer on no Renault Belgium or Mobilize page. On the Renault France community forum, a message dated 11 August 2026 claims the opposite: "Renault no longer buys back Zoé batteries". That is a user's opinion, unverified.

Three sources, three answers. Until one of them is confirmed on an official page, treat each figure as unverified, and do not sign a buy-out on the strength of a news article or a forum post. Selectra adds that in France the buy-out remains paid, from 2,000 to 7,000 €, and ends the replacement guarantee attached to the rental.

If you are concerned, ask Mobilize for a written offer stating the amount, the validity date and the effect on the warranty, and have the state of health measured before you sign.

Five lines to demand on a quote

A replacement quote that lacks them cannot be compared with another.

  • The written diagnosis, with the measured state-of-health value and the cause of the fault.
  • The nature of the part: new, exchange unit, refurbished or module, with its reference.
  • The fitting price, separate from the pack's.
  • The warranty term on the part and on the work, in writing.
  • The return of the old battery, which keeps resale value: it should appear as a deduction or be justified.

Of the 133 Belgian used-car listings I read on 25 September 2026 for the ranking, only ten published the battery's state of health. Nine sellers in ten therefore let you buy without knowing what a replacement would cost.

Before buying a used car, demand the battery's state of health too. Car-Pass does not show it today: its October 2025 study recommends adding it, optionally at first. Meanwhile, rely on an independent diagnosis, like the one in our used-car guide.

Will the 2027 battery passport change anything?

Not on prices. From 18 February 2027, EU Regulation 2023/1542 requires a digital passport, accessible by QR code, for traction batteries above 2 kWh placed on the Union market. It must gather the carbon footprint, the origin of materials, chemical composition, recyclability, a unique identifier and charge-cycle data, according to the Switzerland Global Enterprise analysis.

The text sets no replacement price. Its value lies elsewhere: a standardised history at resale, which cars from before 2027 will not have.

Frequently asked questions

How much does it cost to replace a Renault Zoé battery?

According to a price table published on 15 May 2026, a new Zoé pack (22 to 52 kWh) costs 7,400 to 9,500 €, plus 500 to 1,500 € for fitting. A refurbished pack goes for 3,000 to 5,000 €. Redion put the 52 kWh at about 8,500 € in April 2024. None of these is an official Belgian price: insist on a written quote.

How much does it cost to replace a Tesla Model 3 battery?

The 15 May 2026 table gives 13,000 to 22,000 € for a new pack, plus 2,000 to 3,000 € for fitting, and 8,000 to 12,000 € refurbished. Mac4Ever, in December 2024, found 10,000 to 16,600 €. The gap comes from capacities and model years. Under warranty the bill is zero as long as the battery stays above the guaranteed threshold.

Does the manufacturer warranty cover battery replacement?

Yes, under the contract's two conditions: term and mileage on one side (8 years or 160,000 km is the standard, according to Car-Pass), capacity threshold on the other (70% for most, 66% for Renault). The manufacturer may choose to repair modules rather than change the pack. Normal wear, above the threshold, is not covered.

Can you replace just one battery module?

Sometimes. When a cell fails, it is often a single module at fault, for 1,500 to 4,000 € according to the May 2026 table, after a 150 to 250 € diagnosis. Not every manufacturer allows this repair: ask in writing whether your model's pack is repairable or only replaceable.

Le verdict de Christophe F.

Do not budget for replacing a pack: budget for the warranty. While it runs, the question almost never arises. Once it has lapsed, compare the quote with the car's value before deciding, prefer the module or the exchange unit to a new pack, and demand the five lines above. For a used car, start with those whose battery warranty has the longest left to run, in our comparison tool.