DMEGC do seem to have a pretty big, swanky factory, they claim making 80,000 x 18650 cells a day (among many other cell types). If Fiido alone are selling (a claimed) 400,000 e-bikes a year, taking typically 40 cells per bike, that's 16 million cells a year - which is 2/3 of DMEGC's stated lithium cell capacity. That may be why other makers don't get much of a look-in and why people like Mooch haven't come across them? Gone are the days of excuses for not exercising or finding the right sports place. With an eBike, every road becomes your sports arena. Travel is not just a mode of transportation; it’s a sport in itself. We’re here to change your sports perspective and make every journey a path to a healthier, more active life. On the Cyrusher XF800 I can hit a max speed of 37mph (peddling) on flat land and get a range of 22 miles in PAS 5 and 48 miles in PAS 3 with the OEM 17.5ah battery What you could better do imho is adding a maritime switch with a high amps rating (over 100a). This switch should work fine on its own:

We have fitted 1 of the most advanced BMS you will find in any Ebike Battery to keep the battery safe, performing 100%, to be reliable for the long-term and to give the user access to data for info and diagnosis. The answer is that, unless you are seriously budget or weight constrained, this would probably be a bad battery investment. It might fit the bill initially for your commuting needs, but then it doesn't really leave any reserve if you need to run some errands on the way home or forget to charge it up one night etc. Even worse, as the battery ages over time, the capacity drops. After a year your 8Ah battery is now only 7Ah, it's only barely able to do your daily commute, and the next year when it is just 6Ah you now need to carry the charger with you and top it up at work every day.And a final point is that a larger battery has a lower per cell stress during discharge since the current is shared among more parallel cells. Cells that are cycled at high discharge currents (>1-2C) exhibit noticeably lower cycle life than those cycled at low currents Parallel Connecting Batteries Replace this widget content by going to Appearance / Widgets and dragging widgets into Footer Area 1. It limits the bike to 16kmh speed. I want to remove the limit restriction to use on private land. How can I do this? Basically they add an extra switch with a resistor to slowly charge first ( to fill the capacitors) then use the main ac switch to fully switch on. So it would require you having to turn on two switches each time.

Replace this widget content by going to Appearance / Widgets and dragging widgets into Footer Area 3. My personal take, as you have little in the way of protective clothing on, no helmet for example, is to say leave it as it is..... EM3ev is very well known throughout the eBike kit world, custom bike DIY fellas, and with high end custom bikes like wattwagon.Remove the battery from the eBike before beginning work (e.g. inspection, repair, assembly, maintenance, etc.) on the eBike, transporting it with a car or airplane, or storing it. Unintentional activation of the eBike system poses a risk of injury. USB Port: Stay connected and powered up during your rides with the built-in USB port. Now you can conveniently charge your cell phone or other devices while on the go. Read this manual before you are going to use the Hailong battery, and keep it for reference. This manual contains important safety, performance and battery functions. The battery we choose as example is model Hailong I-1, some customer name it Hailong III.