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
My opinion... the T-1275 is a known entity. Enough folks here have salvaged them out of golf carts and made them useful again, for a couple of years or more.
Charge with 14.8V, all the time... every day with solar panels. 15.0_15.2V when colder, once every 5 to 7 days for a top charge, for one day. Do that for 2 weeks, or a month, and measure your SG after a month. Has it sagged? Let is sit and charge at15.2V for 2 days.
Did it improve the SG?
Yes? good.
No? Equalize charge. Adjust as necessary, or ask Mex for more or better advice.
Trojan should get you 500 to 1000 recharges, just depends how deep you drop state of charge every night, 60 to 70% SOC in the morning, more recharge cycles, 50% SOC, closer to 500 recharges. Check out the Trojan graph for recharges and depth of discharge to cycle lifes.
We know that you know how to quickly figure out what works best for the battery, after the US Battery Screwy 31 adventures and notes. Or if you've forgotten, go back and review that thread.
Maybe by the time your T-1275 no longer suits your needs, Li batteries will be affordable for us mere mortals.
If you get a good, fresh battery, and you get 4 to 5 years out of it, full timing, daily...You've done as good as it gets.
AGMS, are not so wasteful of amps put in, versus amps supplied, design has much less internal resistance.
Charge with 14.8V, all the time... every day with solar panels. 15.0_15.2V when colder, once every 5 to 7 days for a top charge, for one day. Do that for 2 weeks, or a month, and measure your SG after a month. Has it sagged? Let is sit and charge at15.2V for 2 days.
Did it improve the SG?
Yes? good.
No? Equalize charge. Adjust as necessary, or ask Mex for more or better advice.
Trojan should get you 500 to 1000 recharges, just depends how deep you drop state of charge every night, 60 to 70% SOC in the morning, more recharge cycles, 50% SOC, closer to 500 recharges. Check out the Trojan graph for recharges and depth of discharge to cycle lifes.
We know that you know how to quickly figure out what works best for the battery, after the US Battery Screwy 31 adventures and notes. Or if you've forgotten, go back and review that thread.
Maybe by the time your T-1275 no longer suits your needs, Li batteries will be affordable for us mere mortals.
If you get a good, fresh battery, and you get 4 to 5 years out of it, full timing, daily...You've done as good as it gets.
AGMS, are not so wasteful of amps put in, versus amps supplied, design has much less internal resistance.
