Trojan t-1275 vs Signature series J150 RE
Before winter, I need to get a dedicated flooded house battery, my Northstar AGM-27 has been working hard as both house and engine battery for the last 4 months, and I want to return it to engine star...
Forum Discussion
Thanks BFL.
I consider every discharge cycle a load test, just not one that conforms to a tablet written in stone somewhere.
Minimum/morning voltage at how many AH removed, compare to previous discharges. What variables changed? Repeat, observe, change variable, take Sg readings, ect.
Knowing the manufacture claimed rested 50% voltage level is good too. I have done the AH/20, apply that ~load for 10 hours, remove load and see where voltage rebounds to.
My Northstar AGM does very well on this test. Rated at 90AH, I think it is closer to 100AH, still.
I do not generator recharge. I can plug in, I can choose to not even cycle any battery.
But I want my system to perform well without 120Vac available at all.
This requires alternator contribution, and maximum alternator contribution at that, preferably early morning high amp blasting, having to solar complete the task throughout the day, and perhaps some more alternator contribution after sundown.
So where some will run a generator and choose the highest amp charger their generator can run, to minimize generator run times, well my drives are generally short, so same strategy, maximum amperage into battery. I will not Idle the engine to recharge.
So an AGM battery, one that openly says, there s no upper amperage limit, more is better, fits that maximum contribution desire nicely.
But it does not like a solar only low and slow day after day.
The Trojan T-1275 might not enjoy 55 to 75 amps from the alternator, but it will be happier on low and slow solar.
There are many days where I stay put, don't start the engine at all, and rely solely on the solar.
The T-1275 should be the biggest most true deep cycle battery that can best meet my requirements and fit my intended location. Everything is a compromise, but the compromises I will not make anymore is using a flooded group 27 or 31 and trying to trick myself, with the help of the marketing and the sticker on the side, that it is an actual deep cycle battery.
What I really want to know about, is that 2 pound difference on the spec sheets between the J150 and the T-1275, but either way, either battery will outperform the screwy31, unless it simply self destructs at 75 alternator amps.
I consider every discharge cycle a load test, just not one that conforms to a tablet written in stone somewhere.
Minimum/morning voltage at how many AH removed, compare to previous discharges. What variables changed? Repeat, observe, change variable, take Sg readings, ect.
Knowing the manufacture claimed rested 50% voltage level is good too. I have done the AH/20, apply that ~load for 10 hours, remove load and see where voltage rebounds to.
My Northstar AGM does very well on this test. Rated at 90AH, I think it is closer to 100AH, still.
I do not generator recharge. I can plug in, I can choose to not even cycle any battery.
But I want my system to perform well without 120Vac available at all.
This requires alternator contribution, and maximum alternator contribution at that, preferably early morning high amp blasting, having to solar complete the task throughout the day, and perhaps some more alternator contribution after sundown.
So where some will run a generator and choose the highest amp charger their generator can run, to minimize generator run times, well my drives are generally short, so same strategy, maximum amperage into battery. I will not Idle the engine to recharge.
So an AGM battery, one that openly says, there s no upper amperage limit, more is better, fits that maximum contribution desire nicely.
But it does not like a solar only low and slow day after day.
The Trojan T-1275 might not enjoy 55 to 75 amps from the alternator, but it will be happier on low and slow solar.
There are many days where I stay put, don't start the engine at all, and rely solely on the solar.
The T-1275 should be the biggest most true deep cycle battery that can best meet my requirements and fit my intended location. Everything is a compromise, but the compromises I will not make anymore is using a flooded group 27 or 31 and trying to trick myself, with the help of the marketing and the sticker on the side, that it is an actual deep cycle battery.
What I really want to know about, is that 2 pound difference on the spec sheets between the J150 and the T-1275, but either way, either battery will outperform the screwy31, unless it simply self destructs at 75 alternator amps.
