50A fuses on 36V bikes

Our young rider bikes use a 50A fuse, if there is an issue with the bike and the fuse fails, once the cause of the failure has been resolved, (wrong batteries installed or motor overload) the fuse should be replaced, but it must be a 50A Slow blow fuse.
Slow-blow fuses allow for a temporary surge in current that exceeds the current rating of the fuse and will only blow when there is a sustained spike in current over a given period of time (for example, a short circuit)

If the fuse is replaced with a standard 50A fuse, the bike will run, but it will cut out whenever the bike uses peak power, such as hard accelerations with a heavier than usual rider, or riding up a steep hill.
‍