marionw
Solar Enthusiast
Just to be sure, you can communicate with the other batteries using the BMS Tools software....
EG4 LifePower4 48V Battery showing 27V and High Pitch Buzz
- Thread starter girfold
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SignatureSolarJess
Online Engagement Specialist
- Joined
- Nov 21, 2022
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When I get home later, I can remove one of the batteries from the array and check a known good battery. I did have to update the firmware on them when I got my 6000XP, so have gone through the update and tools utility, but most of the communication is to the inverter via daisy chain.
Thanks, will also try charging it while attended for about 10 minutes when I get home. And will have my voltmeter monitor the voltages on the terminal side. Also useful to check the internal voltage to see if it is getting through?w
Yes, that's fineNo case-by-case needed.
hwy17
Anti-Solar Enthusiast
No, people have asked about it and Signature's stance so far is that they will replace failures under warranty but they don't sell spares or loose parts.
SignatureSolarJess
Online Engagement Specialist
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- Nov 21, 2022
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Not just yet. Let's see if the charging works first. If you're still experiencing problems, we recommend contacting the Tech department to ensure that all necessary steps have been taken before opening the unit. They will also document the opening to avoid voiding any warranty.
Thanks, will wait a bit for support, since I won't be around to do anything just yet anyway. Per the steps provided so far by technical support, I was instructed to remove the case and investigate for any signs of burn damage or cell damage. No sign of damage, only a persistent high pitched sound.
DougfromdaUP
Solar Enthusiast
Since you already have the top off, why don't you measure the individual cell voltages before you do anything else? That will tell you if you have any outliers. And it will only take a minute.
Then put the charger on, for what it's worth.
Then put the charger on, for what it's worth.
EG4_Jared
Online Support for EG4 Electronics
Since the top of the battery is already open, would you mind capturing some images of the BMS board? This will enable us to examine the Mosfets closely to check for any signs of damage.
Will do and will update this thread this evening with pictures.
The charger is acting odd, it turns on for a few seconds, then turns off. Clicks on, waits a few seconds and then off. The behaviour may either be Trickle Charging or Low/Bad battery by the description. I think because there is also a green light alternating with the red light it falls under tbe Low/Bad battery indication the front of the charger.
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hwy17
Anti-Solar Enthusiast
I would keep running it like that for 10 minutes or so, while you're nearby of course. When it goes into search mode it might get a little bit of juice in each time. But at this point it is maybe sounding a little more odd than just shutdown mode.
Yeah. The thing SS has been curious about is the lack of alarm light. Apparantly the light will be present for all sorts of conditions, but since the 15th, no leds have lit up from any procedure. No luck just yet on the charging activity front. Will double check terminal voltage afterwards to see if it's still 27ishV.
marionw
Solar Enthusiast
It's possible the BMS is not completely booting up, it does after all have a processor that loads the firmware and controls al the functions of the BMS including the lights. Get Signature Solar to send that new doomaflatchie for uploading firmware into an EG4 LifePower4 battery. It supposedly will upload firmware even if the BMS has been bricked. It is after all free as they sent me one when I requested it.
hwy17
Anti-Solar Enthusiast
I'd probably turn the breaker off then and wait for Signature's instructions. The buzz should stop when the breaker is off right?
I think it should, but it hasn't hahah. I've had it off for nearly a day and when I got back to it, still heard the low volume, high pitched buzz/whirr/hum.
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