Replacement Battery Help/Choices/Opinions
So my 2008 Bigfoot has had 2 Trojan T-105 Plus 6 volt batteries since new (starting their 10th year of service). My current electrical system consists of a Xantrex XADC60 charger/converter (3-stage) a...
Forum Discussion
thundercloud wrote:work2much wrote:
:h Why replace them if they are still providing the same performance?
Well I am going to continue to use them until they die. We live in an area that the nearest Trojan dealer is 60 miles away. I did contact that dealer and he does keep the T-105's in stocks for $162.00 ea. I am just a little nervous about them crapping out on a trip but I am sure they would give me a sign that they are starting to fail.....right?
Typically they will just start losing capacity. Battery life is more a function of cycles and maintenance than time. It sounds like you have a decent maintenance schedule and keep them topped off when not being used. It could be the total number of cycles may not be that high even though you have had them 10 years. Especially if you didn't regular deeply discharge them or only used them for vacations.
Personally I would invest in a battery monitor (for any system) and do your own load test. Charge them up fully, put a load on them and see how many Amp hours the provide until you get to your low voltage shut off. ~12v rested. New these batteries should deliver 100 AH or so for the pair to 50% SOC. (12v) If you are close the batteries are still good to go. Even if they only give you 80AH there is still life left. It would be odd for the batteries to be working fine one day and quit the next.
