The battery on my 14 gave up the ghost the other day. Can’t blame it really as I haven’t used her much in the past 3 years (10k miles and sitting in the shed for most of the time). Battery usually charged once a month, but I forgot, due to building a camper van and as a result of my negligence a new one is required. Motobatt is the preferred favourite. But on saying that 5 years isn’t a bad lifespan for a battery.