Battery woes

I had to take the batteries into the Cheshire branch last week. The front seats had to come out so I could disconnect them and take them all out. Manbat ¬†loaned me a couple of batteries whilst they charged mine on their charger for a ¬†couple of days to see if they could make any sense of what’s going on. One of them tested at 67% capacity and they’re only 4 months old lol Something seriously wrong here. I’ve emailed head office and will try to get some movement on this!