3.2 lipo battery cell, transformer 3 to 12 volts

Discussion in 'OnBoard Electronics & Controls' started by markstrimaran, Oct 8, 2017.

  1. markstrimaran
    Joined: Dec 2014
    Posts: 291
    Likes: 6, Points: 28, Legacy Rep: 28
    Location: usa

    markstrimaran Senior Member

    20 watt 22.4volt 1.14 amp solar cell recharging a 3.2 volt lithium iron phosphate 100 Amp/hr cell .

    Manual on a dead cell. .65 volts start. Mostly trying to see if it will revive.
     
    Last edited: Jul 12, 2019
  2. markstrimaran
    Joined: Dec 2014
    Posts: 291
    Likes: 6, Points: 28, Legacy Rep: 28
    Location: usa

    markstrimaran Senior Member

    Twin 3.3 cells. 6 .5 volts at 40 amp.
    Right cell is 12.7 off a 1 amp buck converter.
    Left cell is 12.7 off a 4 amp
    Buck converter on the top lid
    Converts 1.14amp 20 volt solar.
    Into a 8 amp 3.45 volt charging voltage.

    20190712_124813.jpg
     
    Last edited: Jul 12, 2019

  3. markstrimaran
    Joined: Dec 2014
    Posts: 291
    Likes: 6, Points: 28, Legacy Rep: 28
    Location: usa

    markstrimaran Senior Member

    The battery cell always fooled my digital charger into thinking it was a 1.2 volt ni-cad. Got it up to 2.65 on the 20 volt solar. Now attempting to charge at 3.5 volts 6 ramps with the solar powered buck converter.
    Solar charged up to 2.90 volts at dusk.
    Set up for 8 hour tonight on a 1 amp lithium digital charger. Built for the D cell size 36660 traditional battery cells.

    Mostly to see how long it will hold a charge.
    20190712_131309.jpg
     
    Last edited: Jul 12, 2019
Loading...
Similar Threads
  1. SailBella
    Replies:
    21
    Views:
    616
  2. Artem Klochko
    Replies:
    33
    Views:
    2,925
  3. sdowney717
    Replies:
    1
    Views:
    417
  4. Deering
    Replies:
    4
    Views:
    838
  5. alexandershudai
    Replies:
    4
    Views:
    1,939
  6. 23feet
    Replies:
    4
    Views:
    834
  7. 5teve
    Replies:
    21
    Views:
    2,084
  8. Vulkyn
    Replies:
    54
    Views:
    4,572
  9. Squidly-Diddly
    Replies:
    5
    Views:
    1,210
  10. elyon67
    Replies:
    9
    Views:
    1,491
Forum posts represent the experience, opinion, and view of individual users. Boat Design Net does not necessarily endorse nor share the view of each individual post.
When making potentially dangerous or financial decisions, always employ and consult appropriate professionals. Your circumstances or experience may be different.