New Trojan RE-B's arriving - 1st bank of L16 REB's lasted 8yrs
Tomorrow I hope to pick up my new bank of Trojan RE-B's. I am going to retire the old RE-B bank which lasted 8 years (and still seems to be keeping a good charge).
Old bank conditions:
- Warm 26-29 degrees C environment.
- Average DOD over the 8 years ~30-35%.
- Absorb was set for 3 hours for the first 5 years, I changed this to 2 hours after the death of one cell in 2018*
- The battery* involved above was dropped on it's side on installation (maybe made a difference?).
- The bank was EQ'd ~every 3 months for about an hour.
- It was watered (2 liters for 8 batteries) every 1.5 to 2 months.
I did not "kill" my first bank and I believe that's because of keeping a relatively low DOD (only for a few months did the bank go less than 60% SOC) and eventually making sure I had an array with a 10% rate of charge. I can also probably count on two hands the times the bank went less than 100% SOC at the end of the day. The latter was advice that Coot gave me in 2013 and in my opinion this is the best advice for a healthy L16 FLA bank. These are tall batteries and need to be be fully charged each day, IMHO.
For renewing the bank I did not go the Lithium route ($$ plus I have a FM80 charger). The new batteries have a slightly more generous "Typical Life in a Stationary Application" chart (here), have a different model # ("SPRE 06 415"), and they use 'smart carbon'. But basically it's the same battery with a different label.
Hopefully they will also give me a good run. It's been so long I have forgotten how the commissioning process works. The main thing is when I get my hands on them I will take SG's on all cells and try not to get any knocked over this time! Other suggestions welcomed.....
Outback Flexpower 1 (FM80, VFX3048E-230v, Mate, FlexNetDC) 2,730watts of "Grid-type" PV, 370 AmpHrs Trojan RE-B's, Honda 2000 watt genny, 100% off grid.
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