A2 Cyclami mini rechargeable electric bike pump, new in the box and has a max psi of 100.
It's tiny and easily fits in a cycling wallet, bottle holder or saddle bag. I've been using one of these and they are great. It will inflate at least two tyres up to pressure and a bit left over on one charge. Used on tubeless and tubed butyl/tpu and across 25-40mm tyres. You don't need to force the pump onto the valve, if anything pull it away slightly, so easy to use. Everything you need included in the box.
Advantages over CO2?
More inflation control, stop/start as you need
Reusable and cost effective
No freeze burns