Can an electric car battery be repaired in Chile?

By the EcoBaterías technical teamPublished September 15, 2026Updated October 9, 2026Reviewed by the EPR compliance lead

Yes, in most cases. An electric vehicle pack rarely fails as a whole: one module fails, or the management electronics, a contactor or a sensor. With testing and a component swap, the pack returns to service for a fraction of the cost of a new one. EcoBaterías tests the battery, issues a state-of-health certificate and carries out the repair or refurbishment the result calls for; what is not worth repairing goes to second life or to recycling.

Source: EcoBaterías test protocol · 2026-09-26

What actually fails in a lithium battery?

A vehicle pack holds between 4 and 30 modules, each with dozens of cells, plus a battery management system (BMS), contactors, fuses, sensors and a cooling circuit. The vehicle shows a single symptom — range loss, a fault code, reduced power — for causes sitting in very different layers.

In practice, failures fall into four families: cell or module (one branch drifts out of balance and drags the whole pack down), electronics (BMS, temperature sensors, communication), power path (contactors, fuses, connectors, harnesses) and thermal (pump, coolant, leaks). Only the first involves touching cells; the other three are solved by replacing a part.

Swipe to see the whole table

According to Autocraft EV Solutions, across 559 electric car pack repairs carried out in 2024, 92% of the modules were still fit and replacing 1.1 modules per pack on average was enough. That is why the expensive mistake is diagnosing from the fault code and quoting a new pack: the code says where the problem showed up, not where it is.

Source: Autocraft EV Solutions, May 6, 2025 (opens in a new tab)

What is state of health, and how is it measured?

State of health (SOH) is the battery’s current usable energy expressed as a percentage of its value when new. The vehicle’s BMS estimates it from its own history, but that estimate can drift by several points: it calibrates with use, and a pack that sat idle, changed owners or went through a thermal event carries a stale estimate.

Independent testing cross-checks that reading with measurements of its own: insulation, cell voltage, internal resistance, a capacity test and, in the lab, incremental capacity analysis or impedance spectroscopy. Testing a pack takes between 30 minutes and 6 hours depending on the format and on access to the modules.

Source: EcoBaterías test protocol · 2026-09-26

Once SOH is measured, the decision stops being an opinion. The four routes — direct reuse, repair or refurbishment, second life and recycling — are described in lithium battery testing, with the thresholds in the table above.

Repair or refurbish?

Repair means fixing the specific fault — a weak module, the BMS, a contactor, a sensor — and returning the pack to the same use. We explain it in lithium battery repair, including what can be fixed and what cannot.

Refurbishment means opening the pack, testing every module, replacing the weak ones with matched modules and measuring the output capacity. It makes sense when the pack has lost capacity unevenly. We explain it in lithium battery refurbishment.

In the European Union, “remanufacturing” has a measured threshold: at least 90% of the original capacity and cells whose state of health differs by no more than 3% (Regulation (EU) 2023/1542, Article 3(32)).

Source: Regulation (EU) 2023/1542 (opens in a new tab)

When is repair not worth it?

• Severe mechanical damage, swelling or a thermal event. The battery is isolated and recycled; it is neither repaired nor resold.
• Uniform degradation. If every module dropped together, swapping one does not give range back.
• No spare, or a disproportionate one. When the module cannot be sourced or costs close to the value of the vehicle, second life or recycling recovers more value.
• Unknown history with signs of thermal abuse. A pack with no traceability and evidence of overheating does not go back into a vehicle.
• A chemistry other than lithium-ion. Not every hybrid battery is lithium: several Toyota Prius versions use nickel-metal hydride (NiMH), which we do not repair.

As a cost reference, according to Recurrent, replacing an electric car battery out of warranty costs between US$5,000 and US$16,000 in the United States, and a replacement module roughly US$2,000 to US$3,500 depending on the model. In Chile, the price of a repair is confirmed in the quote, after testing.

Sources: Recurrent, EV battery replacement costs (opens in a new tab) · Toyota Prius XW50, Wikipedia (opens in a new tab) (secondary source)

Electric buses and storage systems

The logic is the same, with larger modules and maintenance contracts in the middle. Santiago passed 4,000 electric buses in February 2026.

Source: Reporte Minero, February 2026 (opens in a new tab)

The first cohort, the one that entered service between 2017 and 2019, reaches the end of its leasing and maintenance contracts in 2028–2029: on the order of 200 buses of 324 kWh, that is, some 500 to 650 metric tons of packs that will need testing to choose between life extension, refurbishment or removal. That case is developed in electric bus batteries in Chile.

Source: EcoBaterías estimate for the 2017–2019 cohorts, based on compiled public sources · 2026-09-26

In stationary storage, the National Electrical Coordinator recorded 3,072 MW / 13,528 MWh of BESS in operation and testing in April 2026. That is capacity connected to the grid, not waste: modules removed under warranty or during repowering usually have high SOH and are natural second-life candidates, as explained in end-of-life BESS.

Source: National Electrical Coordinator (opens in a new tab), capacity in operation and testing as of April 2026, reported by the trade press (opens in a new tab) · 2026-04-30

What does Chile’s EPR law say?

The EPR law for batteries (Ley 20.920, Law No. 20,920) puts reuse ahead of recycling. The Ministry of the Environment’s draft battery decree proposes collection targets for lithium-ion batteries — no target for the first two years, 15% in the third and 50% from the tenth — and that at least 30% of the target be met through preparation for reuse. It is a text in consultation, not a rule in force: the ministry’s deadline to propose the decree is January 29, 2027.

Source: Chilean Ministry of the Environment, draft battery decree (Res. Ex. 821/2026) (opens in a new tab) · 2026-09-26

Meanwhile Supreme Decree (DS) 148/2003 applies: a discarded battery is handled as hazardous waste unless a characterization shows otherwise, and its generator must hand it only to transport holding a health permit and to authorized facilities (Article 27). Before hiring anyone, it is worth reviewing what to demand from an authorized lithium battery waste manager in Chile. For photovoltaic modules, by contrast, the calendar is already fixed by Supreme Decree (DS) 22/2025.

Where can you test and repair a battery in Chile?

EcoBaterías takes in vehicle, bus, storage and micromobility packs in Santiago and Viña del Mar for testing, tests them under a five-stage protocol and issues a state-of-health certificate and a per-module report. With that result it carries out the repair or refurbishment that applies; for whatever goes to recycling, the valorization certificate is issued by the authorized receiving facility. We coordinate pickup with licensed hazardous-waste carriers anywhere in Chile (collection and transport). If your case is a one-off handover rather than testing, the route is in where to recycle lithium batteries in Chile. All our services are listed in services for lithium batteries and solar panels.

What cannot be repaired and does not qualify for second life goes to recycling: we manage its valorization with authorized receiving facilities, in Chile or in OECD countries where applicable; the authorized receiving facility closes the declaration in SIDREP (Chile’s national hazardous-waste declaration and tracking system) and issues the valorization certificate (lithium battery recycling for companies). EcoMinería (Ecoprojects), a founding partner of EcoBaterías, operated a hydrometallurgical plant in Lampa under a 2020 health permit from the Seremi de Salud of the Santiago Metropolitan Region (Chile’s regional health authority) issued in its name, and EcoBaterías’ new plant is under review by that same authority (compliance and permits).

Frequently asked questions

Can an electric car battery be repaired in Chile?

In most cases the pack does not fail as a whole: one module fails, or the management electronics, a contactor or a sensor. With testing and a component swap, the pack returns to service. EcoBaterías tests the battery, issues a state-of-health certificate and carries out the repair or refurbishment the result calls for.

What is state of health (SOH) and how is it measured?

State of health is the battery’s current usable energy as a percentage of its value when new. The vehicle’s management system estimates it, but that estimate can drift, so independent testing combines the reading with insulation, cell voltage, internal resistance and capacity tests.

How much does it cost to replace an electric car battery?

In the United States, an out-of-warranty replacement costs between US$5,000 and US$16,000, according to Recurrent, and a replacement module costs roughly US$2,000 to US$3,500 depending on the model. That is why testing first pays off: if the fault sits in one module or in the electronics, repairing it costs far less. In Chile, the repair price is confirmed in the quote.

When is repair not worth it?

When there is severe mechanical damage, swelling or a thermal event; when degradation is uniform across every module; and when the replacement module does not exist or costs more than the vehicle is worth. In those cases second life or recycling recovers more value than repair.

What about electric bus and BESS batteries?

They follow the same logic, with larger modules and maintenance contracts in the middle. The first cohort of Santiago buses reaches the end of its contracts in 2028–2029, according to an EcoBaterías estimate based on public sources, and those packs will need testing to choose between life extension, refurbishment or removal.

What does Chile’s EPR law say about repair before recycling?

Law No. 20,920 puts reuse ahead of recycling. The draft battery decree also proposes that at least 30% of the lithium-ion target be met through preparation for reuse, but it is a text in consultation: the ministry’s deadline is January 29, 2027.

Updated October 9, 2026 · Reviewed by the EcoBaterías EPR compliance lead