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> Those botched together mains wires alone look like a fire risk.

There is nothing inherently unsafe with bolting power strip onto the wall.

> Quite apart from the circumstances of their creation, the homemade battery packs themselves can also be quite unsafe as some/most shops use any secondhand cells they can get their hands without regards for discharge ratings etc. That sort of imbalance can easily lead to fires during use, which is obviously not great when the driver is in busy traffic at the time.

Not reading the article before yapping your mouth eh ?

> Ady Siswanto, owner of e-bike workshop Dyvolt in Jakarta, told Rest of World he takes care to match the internal resistance and capacity of the cells.

Most of the "serial DIYes" know that just fine, as it is blindingly obvious in performance of batteries and if you're making it a business you'd not have many returning customers... except ones returning for a return.

And let's not pretend name-brand packs don't have "accidents"