Start with the bit u need help with.

We can see ur bike very clearly. The tiny plug in the corner? Cannot. Here’s what to photograph so we can actually help.

V, Ah, A. Three different things. Don’t compare the biggest number on each listing and hope they mean the same thing.

Got a step, a narrow neck or a frame tube in the way? Show us the whole shape before deciding how much battery can go inside.

Before the battery size, show us where it will sit. Mounting, moving parts and the cable route need space too.

The plug goes in. Good. Now check whether the charger is actually meant for that battery before switching it on.

Need a loose cell, or need a battery for ur bike? Different thing. Let’s get u to the right one.

“Roughly this big” is how u end up with a battery that fits until the lid goes on. Measure the usable space, including the bits in…

“Same model, can use right?” Maybe. Show us the version, battery mount and connector first. The name on the bike is only the start.