bigbill
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Post by bigbill on Jan 10, 2020 21:37:40 GMT
Hi, I'm new here but I have 4 @ RNG-BATT-LFP-12-170-BC batteries using 8 each RNG-160DB-H-BC panels across two controllers to charge them. I am looking for the charge settings I need to charge them correctly. I cannot find any documentation for setting up Absorb (Boost), Float and rebulk
It really seems odd I cannot even find setting to use on Renogy controllers??
And for my Magnum Inverter/Charger. I really don't want to return these and buy Battleborns as I can only get 500AH of theirs into my battery box and really wanted closer to 700 AH and Renogy seemed to fit the bill. They can tell me any charging setting for almost any controller/charger being made.
-Bill
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Post by tattoo on Jan 10, 2020 22:57:25 GMT
Are you in the Northern or Southern hemisphere? It really makes a difference how many AH you can expect to make........ But with 8 160 panels you should be making a ton this time of year........
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Post by mediadogg on Jan 11, 2020 0:53:50 GMT
With that kind of investment in Renogy products, I would expect that they will happily respond with all the information you need. Meanwhile, would it be possible for you to post a simple diagram? There are a couple of ways I could interpret your words. It would be interesting to see how you actually have things configured. Also, I came across this post in another forum with information people claimed came from Renogy (ouch, now I see some pretty harsh words from a couple of folks. Obviously I have no opinion on the validity of those comments.) |
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Post by bupkis on Jan 11, 2020 1:25:42 GMT
Renogy Li controllers have a Li selection that charges to 14.4v with no absorb time and no float, ie the batts charge to 14.4v with no temp correction then stop charging until 13.2v when it returns to charging.
This info is in the manuals for say the Rpver Li 40.
The 170ah batteries call for charging to 14.6v max, the manual shows 14.4 ± 0.2V.
What color washers did you use to bolt you panel frame to it structure?
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bigbill
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Post by bigbill on Jan 11, 2020 17:13:37 GMT
Renogy Li controllers have a Li selection that charges to 14.4v with no absorb time and no float, ie the batts charge to 14.4v with no temp correction then stop charging until 13.2v when it returns to charging. This info is in the manuals for say the Rpver Li 40. The 170ah batteries call for charging to 14.6v max, the manual shows 14.4 ± 0.2V. What color washers did you use to bolt you panel frame to it structure? Panels are glued down to the fiberglass roof. No washers were involved. |
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bigbill
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Post by bigbill on Jan 11, 2020 17:14:39 GMT
Are you in the Northern or Southern hemisphere? It really makes a difference how many AH you can expect to make........ But with 8 160 panels you should be making a ton this time of year........ Northern Hemisphere and yes they are making a lot of power. |
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bigbill
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Posts: 4
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Post by bigbill on Jan 11, 2020 17:29:28 GMT
With that kind of investment in Renogy products, I would expect that they will happily respond with all the information you need. Meanwhile, would it be possible for you to post a simple diagram? There are a couple of ways I could interpret your words. It would be interesting to see how you actually have things configured. Also, I came across this post in another forum with information people claimed came from Renogy (ouch, now I see some pretty harsh words from a couple of folks. Obviously I have no opinion on the validity of those comments.) You would think they would want to sell their batteries to everyone, but they don't appear to have the expertise to come up with settings for the major brands of chargers and solar controllers. Hopefully they figured it out for their own line of controllers. but currently I am suspect about that too.
I don't have a diagram yet, but its pretty simplistic, they are just 4 batteries in parallel. 4 batteries in a row with all the negatives connected together and also all the positives connected together.
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Post by mediadogg on Jan 11, 2020 23:16:00 GMT
It was only the "8 each" that confused me. Do you actually have 8 panels for each battery? (I think not, but just asking).
Based on what you just said, you have the 4 batteries in parallel, fed by two charge controllers simultaneously, each having 4 of the 160 watt panels connected, right?
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Post by tattoo on Jan 12, 2020 3:08:02 GMT
It was only the "8 each" that confused me. Do you actually have 8 panels for each battery? (I think not, but just asking). That's what I thought...... We shall see......... |
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Post by solarmad on Feb 18, 2020 3:01:55 GMT
Renogy Li controllers have a Li selection that charges to 14.4v with no absorb time and no float, ie the batts charge to 14.4v with no temp correction then stop charging until 13.2v when it returns to charging. This info is in the manuals for say the Rpver Li 40. The 170ah batteries call for charging to 14.6v max, the manual shows 14.4 ± 0.2V. What color washers did you use to bolt you panel frame to it structure? Panels are glued down to the fiberglass roof. No washers were involved. Lost A 160w expensive panel doing just that. all glue set. as soon as a drop of water gets in it hammers under the panel. The other 160w panel that survived is now screwed inplace aswell as glued. Lasted 7k kms. (before she came loose) The other was replaced with a solid panel. The charge voltage for my setup is at 14.2 bulk.. (different cells but anyway) The 'float' and or the load setting for my pack in its current state is 13.5 Due to when fully charged (only really able to be determined with a shunt) the pack is at 13.6 after resting. Ergo when i use power the voltage drops and it holds constant at around 13.5 not 'floating, just taking the load. So the Float voltage must be lower than resting somewhat. My loads are regularly higher than current in.. however when they are less the anometer shows 0 in or out of the battery and the charge controller is always showing the current for the load. After say every few years id expect the resting voltage to drop a few points due to slight capacity loss.. I will then set the 'float' voltage inline with pack condition. Was having issues above 14.2 (internal bms cutting off while charging leading to inverter cutting off) Was told every point above 14.2 increasing potential charging current significantly. Have not had any issues at 14.2 pumping in 50amps into a 200a bank.. could take more before voltage rises. Mind you this is dependant on the cable size going to battery from your charger.. and the voltage conditions under desired amprage. For example under 50a charge using a 4mm wire would most likley have a higher voltage at the charger side. (not to mention getting HOT) Therefor is probably best to measure voltage from your terminals.. or from your shunt should do. |
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Post by Guest on Feb 18, 2020 6:47:08 GMT
"Standard charging consists of charging at 0.2C constant current until the battery reaches 14.6V. The
battery is then charged at a constant voltage of 14.6V while tapering the charging current. Charging is
considered complete when the charging current has tapered to 0.02C. Safe charging requires
temperatures between 0°C and 45°C (32°F and 113°F) and takes approximately 7 hours."
"For standard discharging, the battery is discharged at 0.2C constant current until the battery reaches 10V.
Safe discharging requires temperatures between -20°C and 60°C (-4°F and 140°F)."
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Post by inhabor on Mar 14, 2020 19:52:03 GMT
Hi, I'm new here but I have 4 @ RNG-BATT-LFP-12-170-BC batteries using 8 each RNG-160DB-H-BC panels across two controllers to charge them. I am looking for the charge settings I need to charge them correctly. I cannot find any documentation for setting up Absorb (Boost), Float and rebulk
It really seems odd I cannot even find setting to use on Renogy controllers??
And for my Magnum Inverter/Charger. I really don't want to return these and buy Battleborns as I can only get 500AH of theirs into my battery box and really wanted closer to 700 AH and Renogy seemed to fit the bill. They can tell me any charging setting for almost any controller/charger being made.
-Bill
Have you figured out how to adjust the victron charger to work with the Renogy batteries? |
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