Gjac wrote:
BFL13 wrote:
Yes, you have to do a second run after the first time it says FUL. Confirm real full with an hydrometer
The 1093A has 2a setting but the 1093D has 4a as it's low and for the E. A near full batt accepts more like 4a going to the 15.7v E so 2 as low not enough
Have you ever verified what % charge you have when it says ful with your hydrometer? My batteries are not on a slide and getting a bulb type hydrometer is impossible. I'm guessing these "smart chargers" only charge to 95% SOC or so. Any thoughts about not bringing batteries up to 100% charge does for battery life over time?
Agree it does not get to real full first go. It seems to depend on previous activity how far it gets up first go. After a few 50-80s it barely gets into the green first go before doing an E then it can take extra Es to get to baseline SG true full. Not so much if only did one shallow cycle.
I don't have that worked out in percentages but 95-97 is reasonable IMO.
Not going to full means sulfation and a shorter life and less capacity, but how badly also varies. IMO going to a float after reaching 97% must help. I usually get five years or so on my 6s and not that many cycles using them hard. ( Running high amp loads and recharging at high amps doing 50-90s off grid.)
They also use a lot of water running hard so you might need a watering system installed if you do that and can't get at them
Solar helps a lot by getting them closer to full and shallow cycling so less sulfation.
It is really a budget thing for how long your batts need to last. Figure the annual cost for three years vs six years and compare that difference in cost to other annual costs and it might not seem too bad.
If you used AGMs no watering but you need to get them to 0.5a/100AH holding at 14.4ish to be true full and the VEC stops too soon so you need a converter or charger that stays at that voltage until the amps get down that far (PowerMax LK, eg) and a way to measure those amps (Trimetric, eg) Also need to charge at 20% charging rate if starting deeper than 75% SOC, so need a high enough amp charger and high enough watt gen to run that. At home need shore power that can run that charger too. Long 14G cord means 120v gets too low, pops breaker in house. But AGMs cost way more, so does that reduce your annual costs? Maybe not.
LFP no watering and do not need to be full so are great if temp specs work where you do not have easy access. Budget factor though
Photo from 12 years ago for K's entertainment
