-Why 80mm wheels?
Bumper wheels sizes are limited for couple reasons.
1 - There's no space for bigger size wheels.
2 - Even if there's space, wheels have to be small to allow for clearance from the ground.
So really, it's not about being/looking 'discreet'.
Slider uses 80mm wheels for XR/Plus and 76mm for Pint.
Spent couple years testing different prototypes with different size wheels.
Small wheels, although may help in some cases, have tendency to catch and not slide as good as bigger size wheels.
The placement of the wheels in front of the pad serve many purposes:
It allows for any size wheels, big or small.
It allows for as much clearance from the ground as needed.
Wheels placed in front of the foot instead of under mitigate nose-dive better.
There's more than enough clearance for carving and going uphills.
Only in stationary tight turns situations, wheels may touch the ground and that's no different for bumper wheels. Usually steep tight turns are done by pros for tricks and most riders don't usually need full clearance.
As for the look, although they stand out a bit, many buyers love the convenience of the front grab handle and don't mind the look at all.
In fact, when you're out riding and look down at the wheels, you'll already feel safer and think these are the most appropriate wheel size needed.

Range extension
All work is done by Sonny. He doesn't outsource.
95% of the times, orders are shipped in the same day.
Emails are answered fast, often within the hour.
If there's any type of issue, Sonny is on top of it right away.
14 days no question asked return policy.

-Why Velcro & Straps?
Well, it just makes more sense and very practical.
No need to drill holes in fender.
Adjust the position of the battery up or down instantly.
Can be used on-board or in a backpack instantly.
When no need for extra range, fender is clear.
Entire set-up can be moved from 1 Onewheel to another instantly.
Battery sits lower with the thin plate.

-What is the difference between PnR and VnR?
PnR is Plug & Ride and 100% Plug & Play. But it only works on Onewheel Plus with hardware 3206 or earlier. To find out, check the app under settings.
VnR is Vamp & Ride and it's pretty close to Plug & Play. It only requires opening the connectors box, not the battery module, and tapping into the main leads. A very simple process. This method works on any model.

-Can I connect fully charged battery when Onewheel is empty?
That's called hot swapping and is not recommended. When you connect a fully charged battery, a rush of current will go into the depleted battery and it will affect its health/lifespan. 20% voltage difference between the 2 batteries is okay.

-Why is VnR the most preferred method?
All high range electric personal transportations run several packs in parallel. VnR is no different. It takes about 10-15 minutes to install and increases the range to as many external batteries as you can carry. EGO 7.5 will add 18-22 miles on the Onewheel Plus. Greenworks 5.0 will almost double the Onewheel XR range.

-Is it okay to charge EGO/Greenworks with the Onewheel charger?
Yes. Tool batteries have a built in BMS and will charge/discharge through the BMS. It will take longer to charge of course. Some will use the EGO/Greenworks charger for a faster charge.  


Explanation of terms:
It all started with CnR. While the terms may sound confusing/intimidating, they're actually easy to understand.
CnR for Charge & Ride. You're charging Onewheel while riding, through the charge port with a modified connector. Usually using a booster to up the voltage from a lower voltage battery to match Onwheel's battery.
PnR for Plug & Ride. You're using same voltage battery as Onewheel's, thus eliminating the need for a booster. This method will only top the stock battery as it depletes, until both batteries run out.
VnR for Vamp & Ride came after FM disabled CnR/PnR. Bypassing the charging circuits altogether, and straight into the connector's box. Most popular method thus far. Using same voltage battery, it runs in parallel with stock battery. No need to open battery module
CnR/PnR will work on V1's, and Pluses with firmware 3206 or earlier, and XR with 4206 firmware only.


A little history on how external batteries/range extension came about.

For few years, many wondered if an external battery can be used on the Onewheel to extend range.
Sonny had already added an external battery on his electric skateboard to add range and believed there's no reason why it can't be done on Onewheel.
Sure enough, he figured out a way and posted about it on Facebook Onewheel Owners Group.
Shortly after, he started building and selling battery packs while making 'how to' YT videos about different ways to connect external batteries.
Someone by the name of Dyre Beck on the Facebook Onewheel Owners Group realized that the EGO tool battery has the same voltage as the Onewheel Plus and modded it to his board. He shared his experience with the group.
Since external battery installation required opening the battery module, many weren't comfortable doing that. There's also the risk of damaging components during the installation process.
At about the same time, a person from the San Francisco Onewheel Group figured out a way to charge the board while riding. CnR for Charge & Ride became very popular since it didn't require opening the battery module. This method required a donor battery and charger.
Fast forward a year or so, Mike Mueller discovered that the stock battery can be topped from another battery with the same voltage via the charge port and PnR or Plug & Ride was born. This method eliminated the need for a charger.
Subsequently, Future Motion the company that makes Onewheel disabled CnR/PnR.
That didn't stop Mike from digging further and he came up with VnR or Vamp & Ride, which is tapping into the main leads in the connectors box. While not as plug and play as CnR/PnR, it's still much easier/safer than opening up the battery module.
In short, it was a collaborative effort of several people to improve the experience of Onewheel.