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About stuvo

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  1. Battery lugs and terminals

    Would this be appropriate? Carplan/Carlube Mullti-Purpose Grease Copper 20g https://www.lazada.com.ph/products/carplancarlube-mullti-purpose-grease-copper-20g-i120057417-s124749710.html?spm=a2o4l.searchlist.list.7.25027cccXRCKYf&search=1
  2. Battery lugs and terminals

    Are battery ring terminals and the like really necessary? It seems like twisted copper and a couple of flat washers should do the job just fine. Please crucify me now.
  3. I have 12 260W. I wish I had 3 more on cloudy days.
  4. Regarding downloads & Hi!

    I had the same problem when I first joined, but several users responded to my requests with private links to the files I wanted. powerforum is the best. @Chris Hobson axpert guide should be the first thing you download as a new axpert owner. https://www.dropbox.com/s/udzwb3gi7rza9z5/Axpert Settings 1.1.pdf?dl=0
  5. Axpert not using the available solar energy

    I have some more info which may be relevant. The resets only seem to happen when I am operating at nearly full PV capacity. Since I can't sell my excess back, I bought an air conditioner. My battery bank gets to full charge around 1100 to 1200. Then on hot days I turn on the AC. The input watts go from around 900w to 2200w or greater (3.12kw max array). I'm still getting a 2amp trickle charge to the batts, and everything is fine on a full sunny day, but if it's partly cloudy, that's when the MPPT reset occurs. edit: Did mouse wheel scrolling stop working on only this site, or is it just me?
  6. Axpert not using the available solar energy

    @pilotfish I do see a correlation between mppt resets and pv input voltage sometimes. My pv voltage drops to around 80V or lower with cloud cover. My array is 12 x 260 watt in 4 parallel strings of 3 panels. I don't have the exact figures handy right now but, it's something like 91V nominal. DURAFLEX-SRP-6PB-4BB.pdf
  7. Axpert not using the available solar energy

    Just to follow up: I've been experimenting and I don't believe it was any load turning on that was causing my MPPT to reset. Today was completely sunny, not a cloud in the sky and I had no resets. I think it was intermittent cloud cover that caused the resets.
  8. Axpert not using the available solar energy

    I have a 3/4 hp water pump that is activated by a float switch, maybe that is it. Now that I think about it the wife may have been watering the garden causing the pump to trigger several times this afternoon. The MPPT resetting causes the PV in to drop?
  9. My SMKSOLAR Axpert MKS 5kVA 4000w 80A Inverter will be humming along at about 2.2kw PV watts in, charging the batteries with 2 or 3 amps float with a 35% load. Then all the sudden my PV watts will drop to about 200 and the BMV 702 shows a discharge of around 30A. This is not in relation to a cloud or anything I have noticed. After a minute or three the PV watts in will slowly start climbing until my full house load is met and I am again putting a charge on the 200ah AGM battery bank. This seems to happen every 10 minutes. Over the course of the afternoon, this reduces my charge percentage from 100% to about 80%. The solar energy is there. Why won't my inverter use it. PROGRAM: 1 Output source priority SbU 2 Maximum charging current 40A 3 AC input voltage range APL 5 Battery type AGM 16 Charger source priority OSO 31 Solar power balance SbE My array is 3.12kw
  10. Battery overcharging/undercharging

    @Chris Hobson, I think I've got my set up about right, but I really don't want to mess up my batteries and was hoping you would take a look at my settings. I've got 8 12V 100ah batts in two parallel strings of 4 (data sheet Rocket ESC100-12.pdf) attached to an Axpert 5kva. I'm using a bulk charge rate of 58V and a float rate of 54.8V. My BMV has program 2 set to 54.6V with a 3% tail current (program 3) and a 10 minute charge detection time (program 4). I set it up based on advice from this video My 3kw PV array has no problem getting the bank to full charge daily. The temperature around my batteries is often up to 35C. I'm charging OSO solar only at 30A (the max current on the data sheet.) I'm leaning toward staying on inverter program 1 SOL which switches me to grid, but only takes my batteries down to about 85%. I can go all night on SBU, but I drop to a SOC of about 55%. That's a bit lower that I want to go. Thanks.
  11. Firmware update freeze

    I finally heard from SMK Solar. "Thanks for your enquiry. The software can not upgrade by customer. Otherwise the chip will blocked. For software upgrde, this software upgrade version may not suitable for our product. Since it is working good, no need to change the setting by end user. " So I guess that's that.
  12. Firmware update freeze

    @Coulomb I only have a 200ah bank so I've got my max charge set to 20A. Anyway @flltech here are some (poor) pictures of the interior.
  13. Firmware update freeze

    @Coulomb, The fourth scrolling picture does look like the inverter I received. I purchased mine from here. This site has changed since my purchase and the picture now does have the fins on top. My model does not. The default charging for my unit is 60 A (program 02), but it can be set as high as 120 A. --edit the manual says 120A, I just checked what the setting would actually allow, and It only goes up to 110 A end edit-- I was unable to find a manufacturing date. The printed manual that came is the: 1KVA-5KVA INVERTER / CHARGER version 2. It appears to be pretty much identical to the version 1.7 I was able to download. I did attempt the upgrade with a fresh reboot as @Don recommended, and I'll confirm the serial port with watchpower next time I attempt an upgrade. I've emailed my supplier for guidance and I'll let everyone know If I get additional information or figure something out. I appreciate all the help.
  14. Firmware update freeze

    Re reading my last post. The only thing in common (other than the inverter) is the physical USB to serial adapter. It's a generic Prolific VID 067B PID 2303 rev 0300. This seems to be common adapter that I have seen mentioned in this forum, so again I'm at a loss. I'll contact the third party distributor I purchased the unit from tomorrow and see If I can get any info from them.
  15. Firmware update freeze

    When I used the win 10 computer the only COM in device manager was the USB to serial adapter. When I first plugged it in, it defaulted to COM 7. I used advanced properties to set it to COM 1. The drop-down list box had only the COM 1 option. I just purchased this new "SMKSOLAR Axpert MKS 5kVA 4000w 80A Inverter/ Charger (grid/ off grid)" a couple of months ago. It's got to be a real. Every thing about it follows what I am reading here on the forums and in the several versions of manuals I have. All the programming options match. Yes, the existing firmware is U2 4.0, U1 32.40 Watchpower is installed on the win 7 computer I used. I made sure to exit the software from the system tray. Watchpower or anything else that uses a serial port is not even installed on the win 10 computer I used.