@Dellmassive , I know this is sorted now but am I right in saying that the temperature sensor shouldn't be used on this type of battery?
[Resolved] Renogy problem - BMS drift, 100%-0%-100%
- Thread starter Periscope007
- Start date
the DC-DC charger , temp sensor should be used for all types . .
with SLA battery's its used for charge temp coefficient ( ups the voltage when cold)
and with Lifepo4 its used to LOW TEMP charge blocking. ( incase you have a battery who BMS doesnt have that feature)
re:
nice install that . . .
so it looks to me like the battery is 47% soc. . .
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the charger is showing BULK. . . (green) so requesting full charge. . .
the battery is 13.5v (red) - so ready to take more charge.
but the engine charge shows 0A (yellow) so not charging from engine at that time.
but is showing the starter battery voltage at 12.6v (blue) - so its seeing the starter battery.
and you can see that the charger is trickle charging at 8W from solar - (pink)
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from the above its shows battery around 50%,
engine is OFF,
and solar is very poor, so cloudy or dark.
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can you do another screen shot with the engine running?
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and as you say . . from the histrory it looks like you are charging. . .
these red traces seem to show engine charging.
and the green show very low solar charging . .
these red traces seem to show engine charging.
and the green show very low solar charging . .
Thanks @Dellmassive , yes, it was very cloudy when I took those! Van up at the compound at the moment, so I’ll get some more engine running and settings later. I have to confess I’ve only just found the settings screen in the app!
The state of charge was showing 75% and less, even at 14.2 V - similar to @Periscope007
The state of charge was showing 75% and less, even at 14.2 V - similar to @Periscope007
yeh. . . different revisions on the Renogy install guide.
that says dont use, but depends on what BMS and battery you have. . . in any case it wont matter or hurt anything.
with lifepo4 setting it will just block charge to the house battery if the temp drops below 0degC.
so no problems. . .
FWIW: i run the dc50S, with lithium, and havent get the temp sensor plugged in currently. . . the only difference if the battery temp metric defaults to 25degC fixed.
sure. . .
will if the battery is at 14.2v and taking less that 1.0A charge - then it is fully charged.
and the BMS should reset to 100%.
if it doesnt, you can run the battery dead flat till it switches off . . . that will reset to 0%.
then do a full 100% recharge from EHU.
that will reset any BMS battery drift.
Parked up the solar has more or less filled the Li battery, showing 14.2 - 14.3 V, although only 48% SOC. Engine running screenshot and settings shown. I know I need to run Li right down to reset SOC, but since it is unreliable anyway I don’t see a need to do that, and I’ll use battery V. If I didn’t have the app, and just a voltmeter, I’d be blissfully happy!
agreed . . looks like battery is full.
id still reset the battery anyway.
its an easy fix.. . just disable the charge sources and run it flat with loads.
then should reset to 0% . .
then hopefully back to 100% next recharge.
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thing like this mess with my SOC OCD - i wouldn't be happy until the SOC read right.
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id still reset the battery anyway.
its an easy fix.. . just disable the charge sources and run it flat with loads.
then should reset to 0% . .
then hopefully back to 100% next recharge.
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thing like this mess with my SOC OCD - i wouldn't be happy until the SOC read right.
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