@Maven
I’m quite certain that the Revel kit only produces regen current when you brake – so coasting down hill without braking – or foot pumping without braking – neither of those activities should be contributing to any overcharged battery condition. If I’m wrong then you would get an overcharge vibration alert. I don’t think i’m wrong. So that should anwer you main question which is that propelling you board without throtteling the revel kit should not damage the Revel kit.
But you also mentioned down hill braking an that is a topic unto itself.
If you scroll through the 900 posts to this thread, you will see that I have written a few encyclopedias on the dangers of traveling down hill on a full battery. You should review those if you live at the top of a hill or in an area with very steep and prolonged hills.
Briefly, the Revel kit does a slight undercharge that gives you a block or so of safe braking depending on grade. If you get a vibration alert on a full battery, you want to stop braking and either safely jump off or ride out the hill without using the brakes. If you continue to brake beyond the first vibration alert, then you are at high risk of an overcharged and damaged battery.
The majority of Es8 products will just let the BMS pull the plug on the ESC – leaving you with no power and no brakes or possibly 100% brakes. The Revel kit won’t do that. This gives you a chance to save your own life if you need to brake on a steep hill but you will be cooking one or more cells in the battery as you save your life. Its a small sacrifice for not dieing and it is an easy circumstance to avoid – just don’t travel down hill on a freshly charged battery and immediately heed any overcharge vibration warning from the remote.
On any Esk with a small battery, you also need to to be careful of riding down a mountain even on a well depleted battery. Regen current on a steep down hill incline charges a battery about 8 times faster than a wall charger. That’s ok for brief periods but sustained high regen current on a prolonged down hill slope will cook a small battery. In most cases, the BMS would pull the plug on the battery and you would be left wiht no brakes on an incredibly dangerous slope. The Revel Kit would not let the BMS pull the plug on you – so you would not lose brakes but you woudl be cooking the battery on the way down if you ignored the vibration alerts.
So if you live in a region with extremely steep hills, you should be looking at set-up that has a very large battery and one that allows you to undercharge. There are other options including a DIY that is configured for electric braking only (no Regen).
To your question about the 4 speeds, those settings only reduce acceleration to give you longer range. So there shoud be no difference in regen current based on the speed that you select.
Traveling down hill without power might do nothing harmful or might do damage. I don’t know. However it is an unitended use so its hard to say that it is a good idea.
In general Regen won’t do any damage to the speed controler but it can do damage to the battery if the battery is already full or if the rejen current is sustained and intense due to prolonged steep hill braking.
But you should be able to push or pump all day long on a powered up revel kit without any regen related problems.