SailNet Community - View Single Post - Problem with new batteries keeping the charge
View Single Post
Old 10-15-2013
svHyLyte's Avatar
svHyLyte svHyLyte is offline
Old as Dirt!
Join Date: Nov 2008
Location: Tampa Bay Area
Posts: 2,918
Thanks: 15
Thanked 128 Times in 121 Posts
Rep Power: 7
svHyLyte is on a distinguished road
Re: Problem with new batteries keeping the charge


In comparison with your experience, this past July 23rd I installed 4 T-105 batteries as replacements for our then 7 year old batteries. Trojan indicates the battery self-discharge rate of their batteries at about 4% per month and, with all the electrical services shut off, that is about what we have observed.

Also, while some have suggested that flooded cell batteries need to be "exercised" a few times to achieve full capacity, when questioned about this, the Trojan tech's indicated that it was really not necessary, at least with their batteries.

Given the foregoing, you may have a drain you are not aware of. Several years ago we had a situation where a grounding foil has chafed through one of the positive cables in a spot under and behind our engine and only discovered by accident. Once the cable was replaced (and armored) our mysterious discharge problem was solved.

"It is not so much for its beauty that the sea makes a claim upon men's hearts, as for that subtle something, that quality of air, that emanation from the waves, that so wonderfully renews a weary spirit."
Reply With Quote Share with Facebook