Hi,
I'm curious about how often my fellow blue water cruisers change their service batteries. We use marinized lead-acid batteries, which I have to change every 2 years, even though we are very careful. Is it just us ?
Michel on Velvet.

Hi all,
Thanks for your replies. My apologies for not getting back earlier.
After several changes of thought, I decided to leave lead acid a last chance. I renewed the service bank as it was before : 6*Vetus 105Ah, based on the following :
- we have left tropical latitudes so the conditions should be easier
- we may have just been unlucky with the previous banks, especially when one of the batteries overheated (short circuit ?) and damaged the other ones
- from now on, I will make sure I recharge the park before it gets down to 80% (previous iterations were in the 92-100% range, might not be enough "exercice" ...) 
Cheers, Michel.