It’s how long is a piece of string because of all the anomolies i.e – other power use & temperature…..so divide 1.0 a/h into battery usable capacity.
We are low energy users don’t light up like Blackpool Illuminations & don’t use a television or other devices. Never been a problem to go a couple of nights without hook up in the winter currently we have a Varda LFD 90 previously a 105 a/h battery. We rarely go more than a couple of days without moving on or driving to a place of interest so that replenishes battery for us.
We usually use heater on low power as Gill finds the fan noise annoying – me, wouldn’t hear it without my hearing aids Ha Ha !