I don't think that wear would be worse than driving around. Unless you go out, recharge, and come back, by definition you only have a single charge single cycle to give.
My thinking is that driving has a typical burn rate (eg 1 kWh/mile or whatever), so the battery will be designed around this load pattern. Using it as a battery backup may be pulling a lot faster than optimal and cause additional wear.
It is probably only a minor impact, but I could believe it is outside the design constraints.
My thinking is that driving has a typical burn rate (eg 1 kWh/mile or whatever), so the battery will be designed around this load pattern. Using it as a battery backup may be pulling a lot faster than optimal and cause additional wear.
It is probably only a minor impact, but I could believe it is outside the design constraints.