It's not exactly like i miss the old days of having AA batteries being spread around and that needs replacement all the time. It's more the lack of something wi

It's not exactly like i miss the old days of having AA batteries being spread around and that needs replacement all the time. It's more the lack of something with equivalent modularity, but bigger and with modern higher expectations on energy, power and charging. Like what we are used seeing in laptops, power tools, e-bikes, drones, cameras, torch, appliances, etc.