question

hawkbaitfpv avatar image
hawkbaitfpv asked

75/10 Power Cycling ON and OFF

Hey Everyone.


I just finished setting up a budget Solar setup on my Subaru Outback wilderness, Im running a BogueRV Bifacial 100w panel on my roof rack, ERYY 25Ah LiFePo battery and the 75/10 to handle the charging and the load monitoring. The system is currently connected via a 12v plug to my Euhomy 45qt cooler that draws 40-65w at 12v.

I had the system configured and up and running for a few hours after the install but in the evening when the charge voltage from the solar panel dropped the Euhomy 45qt cooler started power cycling, on for a few seconds then back off again, the bluetooth victron app shows the same, power on the load on and off. I've tested the always on, batterylife and user defined profiles (on between 12v and 14.6v ) for the load output and nothing seems to change the status. It does appear to have charged the LiFePo battery from 81% to 100% based on the built in display on the battery pack but its difficult to determine based on voltage alone what the status of the battery is.

I purchased this configuration because it was meant to give me the ability to run the cooler overnight without needing to run the car to charge the battery but it seems that the system is either not able to handle the 60w of startup power from he cooler on the load terminals or theres some configuration Im missing. Currently I have the battery settings set to the default LiFePo chemistry and the load output is set to always on but its still dropping out and coming back on a loop, without any load on the output Im not seeing any power cycling so Im assuming it has something to do with the load on the system but I dont have nay way to diagnose with an alternate 60w DC Load.

Just curious if anyone has had similar issues, or if theres anything thats works for other peope in a similar situation.


Thanks in advance.

MPPT SmartSolarblue power panel
5 comments
2 |3000

Up to 8 attachments (including images) can be used with a maximum of 190.8 MiB each and 286.6 MiB total.

Alexandra avatar image Alexandra ♦ commented ·

@hawkbaitfpv

It is probably more than 60W start up especially of it has a compressor in it.

It could be volt drop under load (so maybe undersized wiring or high resistance connections) or just the way it starts up the draw is high.

Does it start and run directly off the battery?

Of it does, consider using the load terminals to switch something else to connect the load to the battery.

0 Likes 0 ·
Show more comments
0 Answers

Related Resources

Additional resources still need to be added for this topic

MPPT product page

VictronConnect manual

PWM or MPPT

MPPT calculator

MPPT codes