What Is an LMT Battery Category?

An LMT battery is a sealed battery weighing 25 kilograms or less that is designed to provide traction power to a vehicle in category L, and that is not classified as an electric vehicle battery. The category was created by Regulation (EU) 2023/1542 and did not exist as a separate category under the earlier battery directive. From 18 February 2027, each LMT battery placed on the market or put into service must have a battery passport under Article 77.

The definition works as a set of tests rather than as a list of vehicle names. Sealing, weight, traction purpose, vehicle category and exclusion from the electric vehicle battery definition must all be considered together. A battery that fails one test falls into another category or outside the LMT label, and the passport, carbon footprint and performance duties follow the category that results. Classification therefore comes before any record is drafted.

What does the Regulation definition require?

Article 3 of Regulation (EU) 2023/1542 defines an LMT battery by reference to sealing, weight, purpose and vehicle type. The battery must be sealed, must weigh 25 kilograms or less, must be designed to provide traction to a wheeled vehicle that can be powered by an electric motor alone or by a combination of motor and human power, and must not be an electric vehicle battery. Each element narrows the field. A loose cell, an unsealed pack or a battery designed only for auxiliary power does not meet the test on that element alone.

Record practice starts with the definition, not with the vehicle brand. A classification note should record the measured weight, the sealing construction, the traction purpose stated in design documents and the vehicle category relied on. Where a battery sits near a boundary, the note should record why the chosen category was preferred and what evidence would change the answer. That note becomes part of the conformity evidence even though the passport itself carries only the resulting category.

How does the 25 kilogram limit work in practice?

The 25 kilogram limit is a weight test applied to the battery as defined in the Regulation, and it separates LMT batteries from electric vehicle batteries for category L vehicles. A battery for a category L vehicle that weighs more than 25 kilograms is treated as an electric vehicle battery rather than as an LMT battery. The limit is therefore a classification threshold, not a safety limit or a performance target, and it should not be read as a design recommendation.

Worked check: a sealed 18 kilogram traction pack for an electrically assisted cycle meets the weight and purpose tests and is recorded as LMT. A sealed 28 kilogram traction pack for a similar category L vehicle exceeds the weight test and is recorded as an electric vehicle battery, with the duties that follow that category. The two packs may look similar, but the record, the passport duties and the carbon footprint duties follow the classification result, not the appearance.

Why was a separate LMT category created?

Light electric vehicles grew in number and variety after the earlier directive, and the previous categories did not describe the batteries in e-bikes, e-scooters and comparable vehicles with enough precision. Portable battery rules assumed small sealed cells for everyday devices, while electric vehicle rules assumed large traction batteries for cars and heavier road vehicles. LMT batteries sit between those pictures in weight, use pattern and handling, and the Regulation gives that middle position a distinct set of duties.

The separate category allows duties to be set at a level that fits frequent charging, removal for charging, outdoor use and professional replacement. Passport duties apply without a capacity threshold, performance and durability duties are set for rechargeable LMT batteries, and removability duties are framed around replacement by an independent professional rather than by an end user. A reader who treats an LMT battery as a large portable battery or as a small electric vehicle battery will misread at least one of those duties.

What duties follow from LMT classification?

Classification as LMT brings the battery into the passport duty from 18 February 2027, into carbon footprint declaration duties on the timetable set for LMT batteries, and into performance, durability and safety duties for rechargeable LMT batteries. Labelling, QR code, removability and replaceability, collection and recycling duties also apply in the form set for the category. The passport duty has no capacity threshold for LMT batteries, which distinguishes the category from industrial batteries, where the passport duty applies only above 2 kWh.

Classification does not by itself settle every duty. Some duties depend on rechargeability, some on chemistry, some on whether the battery is placed on the market as a standalone battery or incorporated in a vehicle, and some on delegated acts that set methods or thresholds. A classification record should therefore list each duty separately and mark whether the duty is fixed in the Regulation, conditional on a delegated act, or expected on a stated timetable. That separation prevents a single date from being treated as the date for every duty.

What sits outside the LMT category?

Batteries designed for industrial use, batteries for starting, lighting and ignition, and sealed portable batteries of 5 kilograms or less that are not designed for traction in category L vehicles sit outside the LMT category. A battery that powers a vehicle but is not sealed, or that exceeds the weight limit, also sits outside the category even when the vehicle looks like a light vehicle. The boundary is drawn by the definition, not by retail naming, marketing labels or the name of the vehicle model.

Common boundary cases include cargo cycles with large packs, mopeds with packs above the weight limit, and small traction packs used in non-road equipment. Each case needs the same sequence: identify the vehicle category, measure or verify weight, confirm sealing and traction purpose, then apply the electric vehicle battery exclusion. Where the vehicle category itself is uncertain, that uncertainty should be recorded and resolved from vehicle type approval material before the battery category is fixed.

How should a classification decision be recorded?

A classification decision should be recorded as a short dated note that states the battery model, the weight relied on, the sealing evidence, the vehicle category, the traction purpose and the resulting category. The note should name the Regulation definition relied on and the date on which the check was made, as checked on 28 October 2026 for the framework described in this guide. The note should be kept with technical documentation so that a later reviewer can follow the reasoning without reconstructing it from the finished passport.

Reclassification should be treated as a change event. A change in weight, sealing, vehicle fitment or design purpose can move a battery across a boundary, and the passport, labelling and carbon footprint records must then be reviewed. A new model variant should receive a fresh classification note rather than inheriting the note of an earlier variant. The discipline is simple: no classification note, no settled category, and no settled category, no reliable passport.

This guide gives general educational information only and is not individual legal advice. A reader with a specific battery or market decision should check the current Regulation text and any applicable delegated act, as checked on 28 October 2026, before acting. Classification is the first record in the chain, and the passport that follows it is only as sound as the tests recorded at this stage.