What was your experience with watering them, enough of a reserve to not do it monthly?
As for discharge, I just need to run the water pump in some pre-dawn hours, that will bleed them down quick.
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Congratulations! I rec'd mine a few weeks ago. [the TN700 but 12 v. bank]. I am presently in the charge/discharge cycle to get them up to capacity. Discharging is a chore, let me tell you. Simple to get them down to about 10.5 volts, further down than that I'm using the 12 v. lighting in our home. [Leaving them all on for a couple days, except in the bedroom.] I am on the second discharge and want to do one more after this. I did let them run the house for a few days at first, due to time constraints on my part and to get a quick look at how they'd do. They did fine. I also charged them up fully once and put no loads on them, and after three days, they had dropped only 0.2 to 0.3 volts.
I came on this forum some months ago with questions about these batteries but was met with such derision I figured this was the wrong forum. Maybe not, if you are also going this direction.
Congrat's again. Once mine left Shanghai, it was about 2 1/2 weeks til they hit shore in the LA area. Then it was something like three days til customs got around to releasing them. So you probably have about three weeks more waiting...once the ship sails.Leave a comment:
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Batteries on the way
The boat is loading this week. 48V, 854ah. That will be 2x the current size of the weak, used set in operation, and enough to run the house, farm pump, blowdryerNiFe_flooded.jpg, and microwave. From beutilityfree.com/Electric/Ni-Fe and now I see the Swiss have a Molten Salt/Nickel battery coming out too - zebra-battery and in another 5 years, there will be a better mousetrap. I'll get something while I can. Now to order 100 gal of distilled water, and some siphon tubing....
So I agonized long and hard over them, vs a forklift battery, and many other considerations. I'm willing to give up some efficiency (70% vs 80%) for a much longer overall lifetime and in winter, when running the genset, I'll be in the bottom 2/3 of capacity anyway, where they are more efficient. And they have a pretty large freeboard, so only watering every 2-3 months in summer. But they are less energy dense then lead acid, and will take up a much larger footprint in the battery shed. Still doing final layout tweaks.
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