That's what I've been doing.
Ah... Most modern smaller lights are powered by lithium ion batteries and can pop 200+ full power pops on a charge and at least several hundred if you're at 1/4 power or less. It's not a problem to have a set charging while using a set, then swapping them out when the in use set gets low enough to warrant it. By the time you shoot through the battery, the other one will be charged again. You can effectively shoot indefinitely and only do a couple battery changes a day if you have a heavy shoot day.
I went from having a couple large lights to 7 smaller lights, mostly battery powered and looking to double that. I shoot mostly in the studio, and being able to drop a little light down somewhere, pop a gel on it and meter it, for me, is the new holy grail of studio lighting. It lets me get way more complex with light placement and color, and if I need more light coming from one direction, or a faster recycle speed, just drop another light there and share the required output between the two lights. At 1/2 power, a lot of the newer smaller lights that are powered by a small lithium ion battery cycle in 1-2 seconds, and at 1/4 power, the cycle time is typically less than a second. My biggest small light is 320 watt seconds, followed by 240 watt seconds, then ~80 watt seconds. If I really need more power than putting two 320 watt second lights together, then I can still pull out my big guns, but frankly, in a studio environment for the type of work I do, I just don't need it, and I typically shoot with *huge* (relatively speaking) light sources, like my base fill light is a 10x14 foot white wall. You want even light? Drop 2 or 3 small lights spread over the distance of the wall shooting at the wall. You get a *giant* light that is as smooth and even as you can get, and the combined output is typically more than enough. You want the key side to be warm and the shadow side to be cool? Drop a warming gel on the little light that is on the key side of the wall and a cool gel on the shadow side, and maybe a plus green on the middle one (if you did 3 lights) to tame any magenta contamination, then work from there for where else you want to put lights and what modifiers and gels you want to use with them. And the beauty is, if I'm doing a smaller shoot, or mobile, grab 3 smaller lights with some standard modifiers and maybe one of the bigger small ones as a backup and I can run and gun because they're battery powered. It's great.