trojan t-105

Check out this Trojan T-105 Spec Sheet from google search

TROJAN T105 SPEC SHEET

RoyB wrote:
Check out this Trojan T-105 Spec Sheet from google search

TROJAN T105 SPEC SHEET

Been there, done that. Thanks, but it does not address expected cycle life.

If you take care of them 300+ cycles with 20% degradation in capacity would not be abnormal.

T105's are rated for about 500+ cycles discharged to 30%SOC or so, and something like 750 cycles at 50% DOD

That assumes proper care and charging.

My experience is that I have a pair of T125, now 12 years old, that were passed on to our inlaws two years ago. SG is still very close to new, and they still hold a charge and appear to still be at least 80% of rated capacity. These batteries have 250+ discharge cycles on them to between 30%-50% SOC (50-80% DOD)

Let them get low on water or fully discharged a few times, and all bets are off. either will kill them rather quickly.

Trojan does have on the website a graph of expected cycle life vs. depth of discharge for the GC batteries.

And I emailed trojan to ask them what the defined as End of Life. it is when the capacity of a charged battery is 50% or less of the spec for a new battery after it has been fully charged and equalized.

If you want more cycles, the renewable energy line of GC batteries has double to quadruple the cycle life depending on how much your willing to pay. The longer cycle life batteries have slightly lower initial AH ratings for the same plates and slightly lower initial SG. No free lunch.

Thanks all. I have a man telling me that a Trojan engineer is saying the T-105 cycle life is rated at 1,500 cycles to 50% SOC.
I found it hard to believe.

harold1946 wrote:
Been there, done that. Thanks, but it does not address expected cycle life.

You don't see any value in the chart shown on the linked page?

2oldman wrote:

harold1946 wrote:
Been there, done that. Thanks, but it does not address expected cycle life.

You don't see any value in the chart shown on the linked page?

Thanks. It always helps to read the second page.

Trojan "Engineers" do not talk to mortals. Makes me wonder.

MEXICOWANDERER wrote:
Trojan "Engineers" do not talk to mortals. Makes me wonder.

The person he talked to was James Cobb a thechnical support engineer.

We replaced our Oct 2006 this year (2014) but if used on a golf course we would have had to replace in 2012. Six years is pushing the limits on this technology.