DYU D3F folding electric bike rattle battery repair

Such a small, foldable electric bike can also be ideal for running around the city, going to work, or traveling in a caravan/motorhome. The DYU D3F offers good quality at an affordable price. Yes, it is really very small and makes me look like a monkey on a grindstone, but it is quite comfortable and can be used normally.
In this video, I'll fix its only flaw. The battery rattled on a shakier road, but not anymore.
Link to the bike: s.zbanx.com/r/...
Discount coupon for the first 5 customers (so the price is 479 Eur): DYUZD3E