Assuming you mean battery powered gear, not a cordless controller......
A 100 watt/hour battery is a LARGE HEAVY BRICK. It would power a 50 watt vest for 2 hours. Or at a lower 25 watts for four hours. 25 watts would be pretty marginal on a motorcycle. Though it would be great for a hunter sitting in a tree stand or such.
But again, that is a HUGE battery pack. A more reasonable size and weight would probably be closer to 50 watt/hours. Now you have 1 to 2 hours riding time.
Even better, you have the relatively large electrical system on the motorcycle. Add a plug for a charger. Use that plug to power a 12 volt system. Win.
I have a 12 volt system. Works great. Even the weak EV alternator powers if just fine. I have a battery pack to run a laptop off of. I made an adapter, and used my 12 volt equipment off of the laptop charger a couple of times. If you have a 7 volt system and the battery is dead, you are out of luck. A 12 volt systems means getting power in a lot more places..... maybe.