Announcement

Collapse
No announcement yet.

simpliphi PHI 3.8 LFP battery upgrade

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • simpliphi PHI 3.8 LFP battery upgrade

    Hi all, I'm thinking about upgrading my 48v battery bank (4 12v AGM 100ah in series) to just one of these PHI 3.8
    I need about 1KwH of energy to run stuff at night. My current battery bank can bearly cut it + I'm concerned about
    DOD ruining it. The specs say the PHI 3.8 has 3.04KwH @ 80% DOD and 3.8KwH @ 100% DOD. Does that mean I
    can only pull out 3.8-3.04 = .76KwH of juice to stay in warranty? Does anyone have experience with this battery?

    https://simpliphipower.com/product/phi-3-8-battery/
    .................................................. .................................................. .................................................. ......................................
    Partially off-grid 48v system. Spartan Automatic transfer switch. 1500w Samlex inverter.
    (9) 265w array with 3 (3 panel circuits) to a EPEVER 60amp MPPT charge controller.


  • #2
    Well, something is not right, and best to troubleshoot it before you spend $$ on Li batteries
    here's a screen shot of my simple comparisons , and your 4, 100ah batteries should
    have about 4,000 watt hours in them.
    And it's hard to beat a bank of golf cart batteries, which is what I'd suggest as a debug step, or simply replacing your
    failing AGM's with flooded group 24 or 27's to diagnose what the issue is before you destroy a expensive Li bank.

    battery compare.jpg
    Powerfab top of pole PV mount (2) | Listeroid 6/1 w/st5 gen head | XW6048 inverter/chgr | Iota 48V/15A charger | Morningstar 60A MPPT | 48V, 800A NiFe Battery (in series)| 15, Evergreen 205w "12V" PV array on pole | Midnight ePanel | Grundfos 10 SO5-9 with 3 wire Franklin Electric motor (1/2hp 240V 1ph ) on a timer for 3 hr noontime run - Runs off PV ||
    || Midnight Classic 200 | 10, Evergreen 200w in a 160VOC array ||
    || VEC1093 12V Charger | Maha C401 aa/aaa Charger | SureSine | Sunsaver MPPT 15A

    solar: http://tinyurl.com/LMR-Solar
    gen: http://tinyurl.com/LMR-Lister

    Comment


    • #3
      I agree with Mike. Your battery bank should easily provide you 1kWh a day. If it doesn't then I would say it is not getting back to 100% SOC which could mean the bank is getting old or you do not have enough pv wattage/charging amps to do the trick.

      If you need to replace your batteries I would first look into FLA type before you go to Li type.

      Comment

      Working...
      X