FLEXmax80 Not going to Snooze mode

Discussion about the FM100, FM80, and FM60 Charge Controllers

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FLEXmax80 Not going to Snooze mode

Post by osanchez » Tue Dec 31, 2019 7:13 am

Hello, I recently got a FLEXmax80 for a 24V setup. During the night I have the inverter I got from cotek running my load shut off once my battery drops down to 22V. During this time there is no load but my solar charge controller is taking about 200mA. I was wondering if that is normal from a charge controller to consume. Furthermore when I check the mode the charge controller is on silent. I read in the manual that after three hours of not having enough power from the solar panel arrays the solar charge controller would go to snooze mode. I would imagine this would draw less current from the battery, so how can I get my solar charge controller to go to snooze mode. OR is snooze mode the same as silent??? Any help would be greatly appreciated. Thank you.

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Re: FLEXmax80 Not going to Snooze mode

Post by Mike Curran » Thu Jan 02, 2020 3:12 pm

Here's a screenshot of my FM80 status now that it's dark out.
Screenshot_20200102-180736_Samsung Internet.jpg
Note it's "silent", not snoozing, and there's 0 current on both the PV and battery sides of it. I suspect silent = snooze, but I don't think 200mA is normal in that mode.

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Re: FLEXmax80 Not going to Snooze mode

Post by IanMcCluskey » Thu Jan 02, 2020 3:54 pm

Hi osanchez, where and how are you measuring the 200mA if I may?
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Re: FLEXmax80 Not going to Snooze mode

Post by osanchez » Fri Jan 03, 2020 7:57 am

Hello yes, I am not currently set up with OpticsRE so I read it off of the mate3. I took a picture and it currently shows out is .1A. The way I am reading it is using the FLEXnet with the shunt.

Thank you for your reply Mike Curran. That answers the snooze part of my question, I guess silent is snooze.

Follow up question: Since the Flexmax80 has to detect at least 10.5v to turn on how would I be able to charge dead batteries? or is that not possible. The reason why I am looking at the out current for the battery is because I am currently using battle born batteries https://battlebornbatteries.com/wp-cont ... Manual.pdf . I ran the batteries down to 23v with my loads. The inverter running my load shuts off once the battery gets down to 23v. The rest of the night the inverter takes about around .5A and the charge controller takes about .2A ( from what I am seeing). Once I check the Charge controller and the mate3 the next morning they are both shut off. The battle born batteries have a bms with low voltage protection
"Low voltage: < 10V
If an individual cell falls below a prescribed threshold during discharge, the BMS will prevent further discharge. Although the battery is in “low-voltage disconnect” mode, it will still allow a charging current. (Note: many chargers must detect a voltage over 10v to send a charge to the battery)."

This brings me to my problem on how I can have my batteries charged once the are dead?

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