Start with the existing part and your bike’s full identifier. A shared connector shape, nominal voltage, wheel size or familiar model name does not by itself establish compatibility.
Pay attention to AMA and AMAK
The TotGuard controller listing distinguishes AMA and AMAK vehicle series and warns that the parts are not interchangeable between those series. Capture the whole identifier: AMAK also starts with the letters AMA, so a short prefix check can be misleading.
Collect evidence before checkout
- Bike: full model label, production markings and original order link.
- Part: complete label, manufacturer or seller part number and clear photographs.
- Fit: written confirmation for that exact bike and component version; unresolved questions remain unconfirmed.
- Transaction: seller identity, delivered cost, availability and whether installation affects return eligibility.
- Support: the party that will resolve a mismatch or defective replacement.
Use the supplied or manufacturer-recommended charger and an approved replacement battery for the device. A matching plug or printed voltage is not enough. Do not open or modify a battery pack to make a replacement fit.
Which route to investigate
The store electronics catalog may identify a candidate part. Your original marketplace seller can connect the request to an order. A qualified workshop may help identify a mechanical component after inspection. None of these routes is a blanket guarantee of fit or service availability.
Compare purchasing routes · Understand seller responsibility
Sources & review notes
- TotGuard controller page: vehicle-series compatibility warning
- CPSC micromobility safety information
Reviewed November 10, 2026. These are published-source notes, not hands-on testing. Listings and policies can change; check the current document and your exact bike before acting.