Which version are we looking at?
Ji-Move, Eco Drive, Fiido — give us the full model and version u have. If u donno, a clear photo of the model label helps more than a confident guess.
Add the current battery label. Changed controller, motor or wiring before? Say so. We need to look at the bike as it is now.
The case has to fit. Then it has to come out again.
Check length, width and height, plus the rail, lock and cable exit. A battery that fits the empty space may still foul the lid or have no room to slide off its rail.
If it's tight, send a photo with a ruler beside the space. Include the awkward corner. That's probably the bit we need to see.
Same plug shape doesn't settle it
Show the battery connector, the bike-side plug and the charger label. Similar-looking plugs can have different wiring.
Don't plug in a random battery to check. Start with the labels and manufacturer requirements; leave the wiring alone.
Send this lot
Whole bike and model label. Whole battery and label. Both sides of the battery connection. Charger label and plug.
Missing one? Send what u have and say what's missing. No need to write us a thesis.
For a custom or modified setup, add the controller and motor labels plus available space. Ask about uncertain fit before choosing options or ordering.
