Thank you for all your replies,
Having checked the battery today i am going to replace the 140 AH house battery.
I want a direct replacement that fits in the clips currently in place for safety and piece of mind. As mentioned already the existing battery has a lip on the base in which it is secured to the boat. The link below appears to show the exact replacement so my question is has anyone replaced there one with this replacement?
From Tayna 140Ah Bosch 640 036 076
Thanks as always
I Replaced mine with a Varta 640-400-080/k8 exact fittings with bottom lugs last year 2017 £175 collected from Barden Southampton 01489
Replaced 2 of mine - the original Bosch being over 10 years old and one had failed. Lugs just where you want them ;) :D and I did pay about £145 each for them in September 2016 including delivery to my home address from Tanya (www.tanya.co.uk) :)
Very helpful replies, thank you