-
What happens if you forget your pump, if your CO2 canister has discharged itself, you forget your spare tube, or if you don't recharge your lights, your electronic gears, your phone, etc? If you forget your wallet, forget your way home...
If you can't remember to keep it charged, stick to manual pumps!
For long rides like ultras, while I'm still testing it, I also take my smallest pump as a backup. I'm actually more concerned about the risk of it getting wet and not working than about not being charged. For example, would it break if I tried to use it in pissing rain?
what happens when you're out on a ride and it has run out of battery and you get a flatty :(