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Post by bupkis on Nov 18, 2019 19:12:00 GMT
We sold the AGM batteries so no. But the CC worked fine with those. you've mentioned that when it ran to 11V this was under load. Is this a common occurrence or a one time occurrence? This could be an issue with a BMS potentially. Admin could you explain. I note in you specs. Low voltage protection/recovery etc well below 11v. I'm assuming 4 cells!
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Post by Admin on Nov 18, 2019 19:39:25 GMT
you've mentioned that when it ran to 11V this was under load. Is this a common occurrence or a one time occurrence? This could be an issue with a BMS potentially. Admin could you explain. I note in you specs. Low voltage protection/recovery etc well below 11v. I'm assuming 4 cells! The OP mentioned the batteries would not go above 13.3V. We did not receive time information in regards to how long this was occurring for as well as what the resting battery voltage was. If the battery is resting at 13.3Vish this would most likely bee a full battery. Depending on the load wattage, if the battery immediately runs to 11V it could be a cell issue or a BMS issue with inaccurate cell balancing. Low voltage protection should be working up to 10.5V.
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Post by bupkis on Nov 18, 2019 19:53:08 GMT
From day one two months ago! the OP did mention discharging to 11v once and that the batts are preforming just fine, that charging attempts (4 sources), the batts stop charging @ 13.2v under no load and decent votage in operation, reluctance to give them up at this time. The OP also mentioned 1 hr talking with tech.
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Post by tattoo on Nov 18, 2019 22:50:16 GMT
The OP needs to send BOTH batteries back while they still have a warranty..............
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Post by bupkis on Nov 19, 2019 14:01:45 GMT
I think the OP has left the building since his question goes unanswered.
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Post by tattoo on Nov 19, 2019 15:01:14 GMT
I think the OP didn't get the answer he was looking for......... Since he got several answers and questions that didn't get answered by him.........
I believe he was looking for the answer that he didn't need to send the batteries back........
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Post by mediadogg on Nov 20, 2019 2:06:20 GMT
The other possibility is that he has discovered whatever he was doing wrong and doesn't have the "you know whats" to admit it. I'm always wary about the credibility of a poster who finds something unacceptable about every solution presented and comes back with pages of stats while ignoring simple, obvious realities like: "send the batteries back to the manufacturer who has offered to analyze them."
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Post by tattoo on Nov 20, 2019 3:27:13 GMT
The other possibility is that he has discovered whatever he was doing wrong and doesn't have the "you know whats" to admit it. Now that is a very good point that I hadn't considered........ You might be correct since he seems to be gone......
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Post by Boon on Nov 20, 2019 16:00:18 GMT
Hey all - we are still here - just have had spotty internet connection. Have read through all the comments. We have not discovered the problem and fixed it. We posted here hoping someone else had a similar situation. We will be calling Renogy back to see what can be done and yes, we already thought about sending one battery back at a time. We appreciate the tips you all suggested.
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Post by Boon on Nov 20, 2019 16:10:04 GMT
Admin could you explain. I note in you specs. Low voltage protection/recovery etc well below 11v. I'm assuming 4 cells! The OP mentioned the batteries would not go above 13.3V. We did not receive time information in regards to how long this was occurring for as well as what the resting battery voltage was. If the battery is resting at 13.3Vish this would most likely bee a full battery. Depending on the load wattage, if the battery immediately runs to 11V it could be a cell issue or a BMS issue with inaccurate cell balancing. Low voltage protection should be working up to 10.5V. Admin - the 13.3 v has been happening since we first got the batteries - as soon as we switched from AGM. The unexplainable drop to 11v only happened once but they regularly drop overnight to 12.6 with little to no load. In full sun we achieve only 13.2-3 and then after sunset voltage begins to drop with a minimum load, meaning LED lights and stereo only running.
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Post by mediadogg on Nov 20, 2019 16:21:26 GMT
Hey glad to see you back online. Sorry for the rude comment.
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Post by tattoo on Nov 20, 2019 19:03:16 GMT
Hey glad to see you back online. Me too!!!!!!!
Hope he gets his problem fixed........... I'd like to know what is causing the batteries to max out at 13.3 ..............
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Post by Boon on Nov 20, 2019 20:20:29 GMT
No problem guys - will let you know the results of yet another discussion with Renogy when we get results.
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Post by Admin on Nov 26, 2019 19:39:33 GMT
No problem guys - will let you know the results of yet another discussion with Renogy when we get results. We might need to get these batteries in for testing. Go ahead and call support to file a ticket/claim.
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Post by playersz28 on Nov 29, 2019 17:13:28 GMT
I was considering a pair of the 170's but after reading this tread I think I'll pass. I can see if one battery was bad but two isn't good.
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