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Post by Boon on Nov 15, 2019 20:21:20 GMT
We cannot get batteries to take more than a 13.3 volt charge. We have trouble shot everything and wondering if anyone else has had this problem? Called Renogy and they want us to send batteries back... we are full time and that is not an option right now. Batteries are only 2 months old. We have attempted 4 different charging sources... will not go higher than 13.3...
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Post by tattoo on Nov 15, 2019 21:51:05 GMT
More info needed........
What systems have you used to charge your Li batteries?
What kind of load do you have on them? ?
What is the voltage with a meter of your batteries with no load or charge on the batteries? ?
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Post by Admin on Nov 15, 2019 23:03:14 GMT
We cannot get batteries to take more than a 13.3 volt charge. We have trouble shot everything and wondering if anyone else has had this problem? Called Renogy and they want us to send batteries back... we are full time and that is not an option right now. Batteries are only 2 months old. We have attempted 4 different charging sources... will not go higher than 13.3... Can you describe your system, the charge attempts, battery voltages before charge and after charge, and can you comment on your load types? |
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Post by Boon on Nov 15, 2019 23:06:49 GMT
We have conducted all of the following tests with zero load on each battery. Our entire system is Renogy.
We also isolated each battery to conduct tests on individual batteries. The results were the same for both - which leads us to believe there is a BMS issue with both batteries.
1) 400 watts on the roof into Renogy Rover 30 amp MPPT charge controller direct to batteries. Results were 13.2 volts and controller as well as monitoring system says full charge. Batteries would not accept anything else.
2) Plugged into shore power using onboard battery charger with converter. Results were same as above. Batteries will not accept more than 13.2
3) Smart car charger plugged to shore power along with Renogy 100 watt solar suitcase. Results same as above.
4) Connected each isolated battery via jumper cables to Ford E350 6.7 diesel Super Duty. Results same as above.
The testing was done over a period of two days - giving each test ample time to charge each battery to a full capacity of over 14v. 13.3 volts is the maximum charge the batteries will accept.
Multi-Meter shows batteries at 13.2-13.3 with no load and no charge.
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Post by Boon on Nov 15, 2019 23:10:39 GMT
We cannot get batteries to take more than a 13.3 volt charge. We have trouble shot everything and wondering if anyone else has had this problem? Called Renogy and they want us to send batteries back... we are full time and that is not an option right now. Batteries are only 2 months old. We have attempted 4 different charging sources... will not go higher than 13.3... Can you describe your system, the charge attempts, battery voltages before charge and after charge, and can you comment on your load types? |
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Post by Boon on Nov 15, 2019 23:18:47 GMT
We did all of our tests with no load as stated in our last comment. The system seems to be performing but the batteries will not accept anything over 13.2-13.3 volts - which leads us to believe it is the BMS locking out.
Our system:
4 @ 100 watt Renogy panels in parallel into Renogy Rover 30 amp MPPT
ANL fused into 2 LIFEPo4 170 amp hour Renogy batteries into Renogy 2000 watt power inverter
All of our wires/cables and connectors are of the proper gauge for this system
Our coach is a 27 ft Jayco White Hawk TT
Our demand for AC power is minimal and we are baffled about this battery situation. We have also checked our parameters through our Bluetooth and app. Everything registers normal and our rooftop is producing more than ample charge to accomplish full on these batteries.
We spent more than an hour on the phone with Oliver (at Renogy) throughout some of the listed trouble shooting and he said we box them up and send them back. We are full time RVers, this is our home, and that is not an option at this time. We are boondocking in the Arizona desert. The entire system is just over a year old and the batteries are two months old.
Prior to the lithium batteries, we were using 300 ah of AGM batteries and the system charged to 14.4v and performed flawlessly. Thank you - we look forward to your feedback.
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Post by tattoo on Nov 16, 2019 0:09:41 GMT
What is the lowest voltage that you have seen in the batteries? Or is it always at 13.2 3?
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Post by tattoo on Nov 16, 2019 0:13:33 GMT
So your batteries are 2 months old? Is this not charging fully something new or has it been doing it from the start?
Why did you replace the AGM batteries after just a year of use?
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Post by tattoo on Nov 16, 2019 0:16:57 GMT
What do you have your CC battery type set on?
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Post by tattoo on Nov 16, 2019 16:10:29 GMT
Can you describe your system, the charge attempts, battery voltages before charge and after charge, and can you comment on your load types? It sure would be helpful if the OP would answer ALL of your questions not just a couple................... |
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Post by mediadogg on Nov 16, 2019 18:33:41 GMT
"Connected each isolated battery via jumper cables to Ford E350 6.7 diesel Super Duty. Results same as above."
Does that truck have a Li-iron battery charger? If not, you shouldn't be connecting that way. Maybe that means the rest of your system needs to be reset to indicate Li-iron battery type, not AGM? (see tattoo's comments above).
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Post by Boon on Nov 16, 2019 19:24:50 GMT
What is the lowest voltage that you have seen in the batteries? Or is it always at 13.2 3? The lowest voltage we had was 11 something - one time - normally it is in the mid to high 12's to low 13's as an average. |
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Post by Boon on Nov 16, 2019 19:31:09 GMT
So your batteries are 2 months old? Is this not charging fully something new or has it been doing it from the start?
Why did you replace the AGM batteries after just a year of use?
The lithium batteries are 2 months old. It was charging fine on the AGM batteries - over 14 no problem. We replaced the AGM with lithium when we decided we didn't want to have to worry about the battery depletion on the AGMs. Being full time, we wanted the safety net of lithium. |
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Post by Boon on Nov 16, 2019 19:31:59 GMT
What do you have your CC battery type set on? lithium |
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Post by Boon on Nov 16, 2019 19:33:01 GMT
Can you describe your system, the charge attempts, battery voltages before charge and after charge, and can you comment on your load types? It sure would be helpful if the OP would answer ALL of your questions not just a couple................... I thought I had answered all the questions at this point... what else have I missed? |
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