Keep the two battery questions separate
The US Department of Energy’s general EV explanation distinguishes the traction battery from an auxiliary battery that supplies accessories, with a converter connecting the voltage systems. That explains why a buyer should ask separate questions. It is general background, not a specification sheet or service procedure for every i60 version, and it should not be used to choose a replacement part.
Confirm the actual low-voltage component from its identification and the applicable service information before accepting a description such as 12V replacement included. Record the vehicle reference, fitted battery details and any disclosed previous work. The traction-battery assessment guide addresses a different set of evidence; a favourable propulsion-battery result cannot close an unanswered auxiliary-system concern.
Ask what happened during storage and use
For new stock, request the storage period, preparation history and any reported low-voltage warnings or assistance. For a used vehicle, ask about repeated discharge complaints, replacement invoices and work involving electrical accessories. These questions help a workshop decide what to inspect. They do not establish that storage or an aftermarket device caused a fault simply because both appear in the history.
The new-stock and pre-delivery checklist links storage information to checks on the unit being released. Avoid assuming that very low mileage proves every battery is healthy. Equally, a disclosed replacement need not make the whole vehicle unacceptable. The buyer needs the reason for the work, the evidence supporting it and a completed result before deciding how it affects the offer.
Record symptoms rather than guessing a cause
Ask for the exact warning text, the circumstances in which it appeared and whether it recurred after preparation. Note what was being operated and any recent repair or accessory change. Several different problems can present as an electrical complaint; a remote description should start an investigation, not become an automatic instruction to replace one component.
If the car does not behave normally, have the seller arrange appropriate professional assistance using the vehicle’s instructions. Do not improvise jump connections, disconnect components or touch high-voltage equipment to obtain a sales demonstration. Preserve the original observation for the inspector. A video recorded only after assistance may show current operation, but it does not by itself explain what caused the earlier problem.
Request an interpretable workshop result
Ask the workshop to identify the test method, relevant battery details, date and result, together with any further investigation required. A single voltage photograph without operating conditions is incomplete evidence. The report should explain what was checked and distinguish a battery finding from a wider charging or electrical-system concern. Let the appropriate technician select the method rather than imposing an unsupported universal threshold.
Link findings to the vehicle-level inspection record. For a used candidate, compare them with the disclosed history and repair invoices. For new stock, include them in the completed preparation record. If access or testing was limited, retain that limitation. A dealer can then decide whether more evidence is needed instead of treating the presence of any test printout as a full pass.
Define any replacement and follow-up work
Where replacement is recommended, request a quote identifying the correct component, fitting work, any applicable setup and the provider’s terms. Confirm suitability through the vehicle-specific information and responsible workshop. Do not select a different chemistry or specification solely because it is advertised as an upgrade. A nominal voltage label alone does not establish the appropriate replacement for the particular car.
Ask how the original complaint will be reassessed after the work. A new component is evidence of replacement, not proof that every underlying cause has been resolved. Record the completed work and relevant follow-up observations, with remaining concerns visible. Keep a low-voltage repair separate from traction-battery warranty claims or a promise about the vehicle’s long-term reliability.
Use the evidence in the purchase decision
Compare candidates on completed findings and agreed preparation rather than a low headline replacement cost. One offer may include a clear workshop assessment and finished work; another may offer only to replace a battery if a problem reappears. Identify the difference in the quotation scope and set the required completion point before acceptance.
For multiple vehicles, retain a separate record for each unit that needed investigation. A workshop report from a demonstration car does not certify the rest of the batch. Give the receiving dealer the relevant component and repair information, applicable instructions and agreed support contact. This creates a practical handover for both new and used purchases without presenting one electrical check as a complete vehicle guarantee.
Relevant references: US DOE: general electric-vehicle components. Keep these within their stated market and date; verify the selected vehicle separately.