Originally Posted by sy_gilana
We regularly get 6+ years out of our Trojan T105's, and the TCO (total cost of ownership) is the lowest. Friends with expensive batts, were still paying the mortgage on their batteries, when we bought our second set, and now were on our third, (just purchased) With Automatic watering system theyre hard to beat.
For our house system (and I mean HOUSE, not boat) we were given for the cost of the core
charge a set of ten Interstate six volt 2200 aH batteries.
They had always been watered with an automatic system, but were ten years old.
As you can imagine, I was suspicious, but they were being offered by my very knowledgeable next door neighbor, a serious cruiser who had gone to power.
He was leaving for Alaska
, had no issues with his battery bank, but didn't want to have to buy replacements
in the middle of the cruising season (think shipping
costs in Alaska).
I went for it, and only had to replace one of them.
I bought one at Costco for $79. and I'm in business.
They're mostly in good condition, a couple are starting to get a little "squishy" but they give me whole house backup for about 24 hours from our sine wave inverter
running a big fridge, a freezer
, all lighting
etc, so what the heck.
I can always recoup my core
investment on new ones.
Our boat however, is a whle 'nother kettle of fish
We have 300 watts of solar
, a sine wave inverter
, aerogel for fridge / freezer insulation
batteries and all the juice we can use.
If hot water is needed, turn on the inverter and hot water tank element !!
When the time comes to replace the "House" bank, I'm definitely going with LiFePo4
! After you get past the initial investment, it's a different world.
It's kinda like getting a boat onto a plane when you've never been there before, it's that good.
The only downside so far, make sure you have your charging parameters firmly met.
Don't let them go too low or too high.
As long as you meet those (read the threads regarding voltage) and you'll never look back!
See the threads on CF about "LiFePo4 for a house bank"