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Post by subman631 on May 13, 2019 17:42:38 GMT
Well of course I didn't let it get to 10 volts on purpose. If you look at the voltage curve for a 0.2 C load, you will see that the voltage drops slowly to about 12.5 and then rapidly drops down to 10 volts and below with just a little extra load. I myself am using a 0.1 load which happens to be a chest freezer. That makes tje drop off even steeper. When I checked at 2 in the morning the voltage was still at 12.5 volts. When a chest freezer starts up there's a large surge current sometimes as much as ten times than running current that probably tripped the BMS. The freezer normally runs at 11 and a half amp draw from the batteries. My question remains. How do you reset the BMS and why is it so difficult to reset? Why would manufacturer put in a protection circuit and then when it trips make it so difficult to reset?
I should also add that while I am new to lithium batteries, I have been using my solar system with Trojan Batteries for over 7 years.
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Post by tattoo on May 13, 2019 20:32:05 GMT
So far I'm not sold on Li batteries..... They are to pricey and people have way to many problems with them......
Why would you switch from something that you knew was working just fine?? To something new?? Just curious.....
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Post by subman631 on May 14, 2019 6:08:27 GMT
Simply put, I've been a sucker for new technologies all my life.  In this case i may have just picked the wrong brand if their tech service sucks as bad as it sounds. Why not stick with lead acid? The promise of 3000 cycles instead of 300 certainly was a major point as well as no maintenance. |
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Post by tattoo on May 14, 2019 12:52:59 GMT
Why not stick with lead acid? The promise of 3000 cycles instead of 300 certainly was a major point as well as no maintenance. That makes sense..... Hope it works out for you......
I'm sticking with my lead acid for a few more years before I change....
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Post by subman631 on May 14, 2019 16:27:56 GMT
Thanks. It was a tough decision to make because the lead acid are so much cheaper and i never minded watering them. 2 years was where they started to lose capacity.
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Post by tattoo on May 14, 2019 17:31:08 GMT
Thanks. It was a tough decision to make because the lead acid are so much cheaper and i never minded watering them. 2 years was where they started to lose capacity. I'm almost at 3 years with the ones I bought at batteries plus.... |
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Post by subman631 on May 14, 2019 18:27:36 GMT
How many? 12 volt system? Flooded? How many minutes capacity at 20 amp discharge (the only real way to compare batteries for solar)
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Post by tattoo on May 15, 2019 2:14:20 GMT
How many? 12 volt system? Flooded? How many minutes capacity at 20 amp discharge (the only real way to compare batteries for solar) I have 6 6v flooded 235ah batteries to 12v.... I've never checked the min discharge I have never cared about it..... I'm running a 1944 Monitor top fridge, lights and what ever else I need in my cabin... It's all 120v AC.....
I do all of my heavy AC work during the day when I have excess power....
My system gets down to 12.1 every night and by 10:30 am this time of year it's back up to 12.7.... They float almost everyday... |
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Post by subman631 on May 15, 2019 13:16:18 GMT
Sounds like you had the same setup as me. 😊 i have my top load freezer set up with an external controller so i can run it as a freezer or refrigerator. I have a second one running as a fridge now. Very very efficient!
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In this case i may have just picked the wrong brand if their tech service sucks as bad as it sounds. Why not stick with lead acid? The promise of 3000 cycles instead of 300 certainly was a major point as well as no maintenance.