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
Mex, I do have fans to direct air at the Meanwell and its additional heatsinks, but could also directly attach 60M fans to 2 of the 3 additional heatsinks themselves, which Westend also sent me. My mini borg has not yet completed its transformation.
Westend, I have a battery box under the floor behind my drivers seat. I used to use 2 27's in parallel shoehorned under there as a house bank, but now it contains only the single group 27 Northstar which I have not even seen for 18 months now. I have an hatch to reach it/them from above, but have to climb inside a cabinet to get to them, and some cells required moving my fridge to look down inside. This location is limited to 10.25 inches of height maximum, as i am not modifying the welded steel battery box itself to accept taller or wider.
As a result of this cabinet hatch inconvenience, 2 sets of 27's got low on water and had their lives snuffed out prematurely. I later decided to go with less overall capacity with a single 31 so my solar could better approach the recommended 10% charging rate, and then BFL13 suggested I move the AGM battery in the PITA hatch and put the flooded 31 in my engine compartment to simplify watering and taking hydrometer readings.
It was an awesome Idea which allowed me to figure out exactly what the Screwy31 required by tweeking absorption voltage and float voltage durations. Something I would never have bothered with if the battery stayed underfloor inside a cabinet, under a hatch, and no way would it have achieved nearly 500 cycles.
And while I know having more capacity would mean shallower discharges and more cycle life, I am interested in working a battery hard with deeper discharges, because the results interest me. I am not seeking maximum cycles per dollar even though my finances are hardly healthy, I am seeking maximum possible cycles when whipped by an evil taskmaster. Discharged hard and charged just as hard, to 100%, as often as possible.
The screwy31 got this treatment, and was a great learning experience, and apparently not just for myself. The future T-1275 will be worked just as hard, but for the extra 20 AH overall capacity will mean slightly shallower discharges. I'll keep close track of its behavior in such usage for all to ponder, contemplate, and perhaps even besmirch, if they are so inclined to take offense at my interests in doing so and sharing.
When afterall, it is just a battery, and only rented.
Westend, I have a battery box under the floor behind my drivers seat. I used to use 2 27's in parallel shoehorned under there as a house bank, but now it contains only the single group 27 Northstar which I have not even seen for 18 months now. I have an hatch to reach it/them from above, but have to climb inside a cabinet to get to them, and some cells required moving my fridge to look down inside. This location is limited to 10.25 inches of height maximum, as i am not modifying the welded steel battery box itself to accept taller or wider.
As a result of this cabinet hatch inconvenience, 2 sets of 27's got low on water and had their lives snuffed out prematurely. I later decided to go with less overall capacity with a single 31 so my solar could better approach the recommended 10% charging rate, and then BFL13 suggested I move the AGM battery in the PITA hatch and put the flooded 31 in my engine compartment to simplify watering and taking hydrometer readings.
It was an awesome Idea which allowed me to figure out exactly what the Screwy31 required by tweeking absorption voltage and float voltage durations. Something I would never have bothered with if the battery stayed underfloor inside a cabinet, under a hatch, and no way would it have achieved nearly 500 cycles.
And while I know having more capacity would mean shallower discharges and more cycle life, I am interested in working a battery hard with deeper discharges, because the results interest me. I am not seeking maximum cycles per dollar even though my finances are hardly healthy, I am seeking maximum possible cycles when whipped by an evil taskmaster. Discharged hard and charged just as hard, to 100%, as often as possible.
The screwy31 got this treatment, and was a great learning experience, and apparently not just for myself. The future T-1275 will be worked just as hard, but for the extra 20 AH overall capacity will mean slightly shallower discharges. I'll keep close track of its behavior in such usage for all to ponder, contemplate, and perhaps even besmirch, if they are so inclined to take offense at my interests in doing so and sharing.
When afterall, it is just a battery, and only rented.
