I started out with almost the identical light for my Radrover back in 2016. I wasn't able to get the 4 hours of run time with light and the light output was way lower than the advertised +10,000 lumens. What I also didn't like was the light would stop working when the power would get too low. I had to keep it topped off before every early morning work commute ride and that is sometimes hard to do.
The 16 rover came with a dinky headlight that was about as bright as an iPhone light. Ended up going with Niterider lights with external battery packs. I did a headlight for the rover and helmet light. I have extension cable to keep the headlight battery pack in my rack bag. I keep the helmet battery pack in my commuter backpack.
I like the helmet light with headlight because it can add to the the road light, focused beam with helmet light to see further down the road at 20 mph, I can fix a flat in darkness with the helmet light, illuminates everywhere I turn my head, and vehicles on side streets intersections can see me better if a fence/parked parked cars/shrubs are blocking my headlight.
I like the attached lights because I can switch between my 5 bikes and have head bands for the lights for hiking and camping. Able to find used Pro 3600 Enduro and Pro 1800 Race with spare batteries for 1/2 price on eBay. Only need to charge the battery packs once a week and they have been flawless since 2017.
Radcity with Niterider 1800:
Radrover with 3600 Pro Enduro:
Pic of my Fox Helmet with Niterider Pro 2200 and Light & Motion Vis 180 Pro tail light: