I would recommend getting a real manual 510 or 510 mega xl battery and charger cable (510's cannot be charged on Ego/Riva fast charger). The manuals are fully sealed on the top and are very very nice with a standard Boge cartomizer. The standard 510 batteries are 180mah (2-3 hours for a light to moderate vaper, 1/2 that for a heavy vaper) and the mega xl ones are 280mah (60% more charge)
If you get a real 510 you can use any standard resistance attys and cartos you already have for the Ego.
Supposedly the disposables are a different voltage or something and their electrical parts are not to be used with standard 510 parts.
Cheapest 510 charging cables I've seen are at vaporleaf.com. They have 510 batteries too - I got a pretty midnight blue manual battery there (standard size). Their batteries are not Joye brand but mine works great. I get standard resistance Boge soft-cap cartos at LiteCigUSA.net and they also sell 510 manual batteries and charger cable.
Cignot.com has a black manual battery w/ red LED is you want it to look like a lit cig
https://www.cignot.com/category_s/49.htm
Someplace else might have white w/ red LED