E-bike and scooter batteries are mid-sized lithium-ion packs, usually 36 to 52 volts nominal, that are among the most common sources of battery fires in homes and shops. Most are too large for the small-battery shipping exceptions, so they usually ship as fully regulated Class 9 batteries. This page explains how to identify them, store them safely and route them to recycling.
How do you identify an e-bike or scooter battery?
Look for a sealed pack, often in a frame-mounted case or a rack-mounted cartridge, with a label showing voltage, amp-hours and watt-hours. Common nominal voltages are 36, 48 and 52 volts, and typical capacities run from a few hundred to more than a thousand watt-hours. Multiply volts by amp-hours if the watt-hour figure is missing. Above 100 watt-hours a pack falls outside the general small-battery exception; a ground-only version of that exception reaches 300 watt-hours, but many e-bike packs exceed that too.
Inside, most packs are built from cylindrical 18650 or 21700 cells in series and parallel groups with a battery management system, while some scooters and cargo bikes use pouch cells or LFP cells. Hoverboards and kick scooters often have lower voltage but similar construction. Counterfeit and rebranded packs are common, so the printed capacity may not match the cells inside. If a label is unreadable, send photographs of the case and the connector type.
- Look for UL, CE or manufacturer markings, noting that markings alone do not prove safety
- Form factors: downtube, seat-post, rear-rack, battery-in-frame and scooter deck packs
- Chargers should stay with the battery record, not in the recycling box
What are the fire risks with e-bike batteries?
E-bike batteries can go into thermal runaway when cells are damaged, overcharged, exposed to water or manufactured with defects. Fires are sudden, intense and can release toxic smoke, and they are difficult to extinguish because neighboring cells keep reacting. Many incidents occur during charging, in storage after a crash, or with aftermarket packs and chargers that are mismatched to the battery management system. Ventilation matters because venting cells release flammable and irritating gases that can accumulate in small rooms.
Warning signs include swelling, a hot case, a hissing sound, an unusual smell, discoloration, or a battery that suddenly loses range or will not hold a charge. If you see them, stop using the pack, unplug it and move it away from buildings and combustibles if you can do so safely. Do not put a swollen pack on a charger. For shops and fleets with many packs, separate charging, storage and damaged-battery areas reduce the chance that one failure becomes a larger event.
How should you prepare an e-bike battery for recycling?
Remove the battery from the bike or scooter if it detaches without tools, switch it off, and cover the terminals or charge port with non-conductive tape. Keep it in an individual plastic bag or box so the contacts cannot touch metal or other batteries. Do not disassemble the case, cut wires or try to drain the pack, because open cells and damaged wiring raise the risk of a short circuit.
State of charge is a safety factor. A pack that is partially charged is safer to store and ship than a full one, and lithium-ion batteries shipped alone by air must be at no more than 30 percent state of charge. For ground recycling shipments, a partial charge is a sensible target if the pack still works. If the pack is damaged, swollen, burnt, wet or recalled, do not ship it with normal batteries; tell us so it can be packaged as a damaged battery.
- Tape or cap terminals and charge ports
- Bag or box each pack individually
- Store outdoors or in a fire-rated area if swollen or suspect
How are e-bike batteries classified and packaged for shipping?
Loose e-bike batteries are UN3480, lithium-ion batteries, and batteries contained in a complete bike or scooter are UN3481 when shipped with equipment. Both are Class 9 under the DOT regulations at 49 CFR 173.185. Most e-bike packs exceed 100 watt-hours, and many exceed the 300 watt-hour ceiling of the ground-only small-battery exception, so they generally need authorized packaging, marking, labeling and documentation. Packs of 12 kilograms or more are covered by additional large-battery provisions.
Ground shipping is the practical route. Lithium-ion batteries shipped by air face strict limits, including a 30 percent state of charge ceiling for UN3480, and damaged or defective batteries are forbidden from air transport. Damaged, defective or recalled e-bike packs fall under 49 CFR 173.185(f) and need packaging that contains a thermal event, such as non-combustible cushioning in a rigid outer box. We will confirm packaging and carrier before pickup or shipment.
How do shops, fleets and retailers manage e-bike batteries as universal waste?
A business that collects spent e-bike batteries can manage them as universal waste under 40 CFR Part 273, consistent with EPA’s May 2023 memo on lithium battery waste. That means closed containers, a clear label such as universal waste batteries, protection from release, and a one-year limit on accumulation. Bike shops, rental operators, delivery fleets and campuses often accumulate packs faster than they expect, so a small storage plan is worth writing down.
Store waste packs separately from new inventory and from packs awaiting repair. Use a non-combustible container, keep it away from exits and ignition sources, and limit how many packs are kept together in one location. State rules vary, including requirements around collection and storage that can apply to retailers, so check the state page for your location and ask us about pickup or prepaid shipping options.
What gets recovered, and what affects the cost?
E-bike packs contain nickel, cobalt, lithium, copper, aluminum and graphite, plus plastic housings and circuit boards. At a recycler, cells are separated from the case, processed into black mass and then refined by hydrometallurgy or pyrometallurgy to recover metals. Direct recycling, which tries to reclaim cathode material in usable form, is still largely a research effort. Packs built with LFP cells have less metal value than NMC or NCA packs.
For e-bike packs, count and packing method matter as much as chemistry. Small numbers of loose packs cost more per pound to ship than a palletized load. Damaged or swollen batteries add significant handling cost because they require special packaging. Because recycling economics change with markets, we quote each job individually; tell us the count, chemistry if known, condition and ZIP code and we will provide options.
Industries that generate e-bike and scooter batteries
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Frequently asked questions
Can I put an old e-bike battery in the trash or curbside recycling?
No. Lithium-ion batteries cause fires in trucks and facilities. Take them to a qualified collection program or arrange recycling through us.
Should I remove the battery from the e-bike before recycling?
Yes if it detaches easily, because separate packs are simpler to ship and recycle. If it is built into the frame, leave it in and tell us; a bike with an integrated pack can be shipped as UN3481.
What if the battery is swollen or burnt?
Treat it as damaged. Do not charge it, move it outdoors or to a non-combustible area if safe, and contact us so it can be packaged under the damaged battery rules.
Can a rental or delivery fleet recycle batteries in volume?
Yes. Fleets typically produce steady volumes, and palletized loads of intact packs reduce per-pack cost. We can discuss recurring pickup or prepaid shipping options.
Do I need to keep the charger?
Chargers are electronics, not batteries, and can be recycled separately. Do not include them in the battery box unless we tell you to.