question

big-deee avatar image
big-deee asked

100/20 sometimes stops charging and then carrying on again.

Hello together, my 100/20 is charging a 16S-LiFePo4 batterie with 90Ah. It’s running on two 400W modules (mpp at 34V per module) I have seen now for the second time, that the charger just dropped down to 2 ore 3 watt, without a reason. After a wile it starts working again and I am not able to figure it out. I have checked the manual of the charger and made sure, that there is no problem. The settings are right, cable are fine and also not overheating or anything else. Has anyone experienced anything similar and was able to figure it out?
d9d85220-9054-4943-b17a-891c9c012598.jpeg 32f83391-8432-44c2-a943-29dbcc2b72c5.png



MPPT Controllerschargerlow power
3cdddffa-4239-4815-a98f-b76183880c0d.jpeg (3.8 MiB)
57544034-c58e-412f-8c9f-91ec0e606683.png (79.9 KiB)
42caf3b5-432f-4831-a602-5d6ee616b05c.jpeg (2.3 MiB)
2 |3000
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1 Answer
elvis avatar image
elvis answered ·

Is the BMS turning the battery off? Over voltage maybe.

If the BMS is turning the battery off solar will stop if it has nowhere to go. BMS waits until reset and turns back on, solar starts again.

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Warwick Bruce Chapman avatar image Warwick Bruce Chapman commented ·
56.8 a tad high. Drop to 55.8 and see if it’s better?
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big-deee avatar image big-deee Warwick Bruce Chapman commented ·
Thanks. I will try and give feedback.
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big-deee avatar image big-deee big-deee commented ·
It seams to be working. Thanks
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big-deee avatar image big-deee commented ·
As displayed on the picture, the bms has not switched of the charge. That should not be the problem, but thanks for your help.
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