Why does the motorcycle still not start after replacing the battery?
2 Answers
Reasons and solutions for the motorcycle not starting after replacing the battery: Too many external electrical devices connected to the motorcycle battery: The battery is drained when the vehicle is not running, such as due to GPS tracking, USB chargers, spotlights, etc. Solution: Remove all aftermarket external electrical devices connected to the motorcycle battery, and ensure insulation at the battery terminals. Declining charging performance of the liquid-filled battery: Unable to reach the starting voltage. Solution: If the battery still drains quickly after repeated attempts to charge it by running the engine, and the motorcycle cannot start, it is necessary to replenish the battery restoration fluid or replace the battery. When replacing with a dry battery, pay attention to the battery compartment size, and the capacity can be slightly larger by one specification.
Just replaced the motorcycle battery but it still won't start? I've dealt with this several times. The new battery might have insufficient factory voltage—try charging it for 3-5 hours first. Pay attention during installation—loose positive/negative terminals can cause poor contact, and green corrosion on connectors should be sanded off. If the starter motor only clicks but doesn't turn when you turn the key, it's likely a burnt relay; if there's no response at all, replace the 20A black fuse in the fuse box. Also, oxidized starter buttons on older bikes can block current—just spray some WD-40. Final reminder: the battery needs at least 12.6V to power the engine, easily checked with a multimeter.