Enter Zipcode

Page 2 of 5 FirstFirst 1 2 3 4 ... LastLast
Results 11 to 20 of 46

Thread: How do you solder 6X6, three tabbed cells @ the end ?

  1. #11
    Solar Fanatic
    Join Date
    Mar 2011
    Location
    Philippines 10%
    Posts
    238

    Default

    It is rated at 0.5 volts,around o.55 open circuit voltage. Even without tab wires, you should be able to measure the voltage. Poke tester leads directly where the tab should go(red on the bottom, black on top) You dont have to connect all the tabs to get a reading. One on top and one on bottom is enough.

  2. #12
    Moderator
    Join Date
    May 2009
    Location
    off grid retirement in Northern Calif
    Posts
    7,591

    Default

    Quote Originally Posted by _madtrapper View Post
    Right now I cannot even manage to get one cell to pump out the proper Voltage (4.1v) !! ...
    Regardless of size, a single wafer/cell will only produce 0.5V That's why it takes 36 of them in series to have enough voltage to recharge a 12V battery.

    Amps depend on the amount of (intensity) light shining on them.

    What sort of spec sheet acompanied the cells ?

  3. #13
    Solar Fanatic
    Join Date
    Oct 2010
    Location
    Australia 76 % Philippines 21%
    Posts
    740

    Default

    Madtrappers problem seems to start from what appears to be tha fact.NO information came with the cells.
    Flea Bay specials?? 3rd rate,and way below spec.?

    The usual type of cell DIYs use to make substandard ,short lived panels.

  4. #14
    Member
    Join Date
    May 2011
    Location
    Pennsylvania
    Posts
    40

    Default 3 Tabbed cells

    I can see why the third tab is baffling you but it is buss tabbed the same as single or double tabbed cells. The front of the cell is negative and the back is positive. Connect your cells to the string size you need pos to neg for each cell. To connect 2 strings to a buss tab solder all 3 tab wires of the neg to the buss then connect all 3 pos tab wires in the next string to the buss. Heres a diagram I made. See if it makes sense now. Good luck
    Attached Images Attached Images

  5. #15
    Member
    Join Date
    May 2011
    Location
    Pennsylvania
    Posts
    40

    Default

    Sorry madtrapper I see you only want to connect 2 cells. Tab first cell on front side for neg.and leave extra at top to connect to a buss tab. Tab the secnd cell on back pos side and leave extra tabing to connect to a bus tab . tab all three to the bus tab at neg and pos. Those are your plus and minus connections

  6. #16
    Junior Member
    Join Date
    Dec 2011
    Location
    Philippines
    Posts
    4

    Default

    that's the same cell i want to import last i check china sources cause it's new product line.

    4w 6x6 mono, i think it's around 5$ a piece....

    my supplier told me last time it's no different from the 2tab connection

  7. #17
    Junior Member
    Join Date
    Jan 2012
    Posts
    15

    Default Buying cells

    I managed to get these cells @ $1 A Cell from a local panel maker(in the box). The are rated 4.1v. Tabbing all three of the (+) together & all three of the (-) together is only giving me .5v. Understood it's going to be less indoors but NOT over three volts worth !!



    Quote Originally Posted by Panjong View Post
    that's the same cell i want to import last i check china sources cause it's new product line.

    4w 6x6 mono, i think it's around 5$ a piece....

    my supplier told me last time it's no different from the 2tab connection

  8. #18
    Solar Fanatic
    Join Date
    Mar 2011
    Location
    Philippines 10%
    Posts
    238

    Default

    You are never going to get 4.1 volts on a single cell whether indoor or outdoor. You could get 0.6v open circuit in full sun if you are lucky. Voltage wouldn't change much in different sunlight conditions. It's the current that's changing. There must be a typing error, you are seeing maybe 4._ watts(0.5v, 8a) per cell. You need to do a lot of research and reading to be able to make a solar panel.

  9. #19
    Administrator
    Join Date
    Feb 2011
    Location
    Annapolis Md
    Posts
    6,215

    Default

    Quote Originally Posted by _madtrapper View Post
    I managed to get these cells @ $1 A Cell from a local panel maker(in the box). The are rated 4.1v. Tabbing all three of the (+) together & all three of the (-) together is only giving me .5v. Understood it's going to be less indoors but NOT over three volts worth !!
    I think they are quoting or referring to VA or watts not voltage.
    Rich
    WWW.solarsaves.net

    NABCEP certified Technical Sales Professional

    http://www.solarpaneltalk.com/showth...Battery-Design

    http://www.calculator.net/voltage-drop-calculator.html (Voltage drop Calculator among others)

    www.gaisma.com

  10. #20
    Junior Member
    Join Date
    Jan 2012
    Posts
    15

    Default

    Part of the problem I have figuring things out is that each cell has a + & -. Ergo 2+ & 2 -. When you attach the top to the bottom of the next you have more + than -.

    OK. IF you go from the bottom of the 1st cell to the top of the second cell, what/how do you connect the top (-) of 1st to the bottom(+) of 2nd cell?
    WHAT'S wrong with my diagram (crude but should get the point across).

    What's wrong in the attachment ??

    Thanks in advance guy(s) for yer help.
    (I HATE BRAIN FARTS !!!!)

    P.S.
    Axis; the voltage was hand written, which makes me think that, what I was told was correct.



    Quote Originally Posted by axis11 View Post
    You are never going to get 4.1 volts on a single cell whether indoor or outdoor. You could get 0.6v open circuit in full sun if you are lucky. Voltage wouldn't change much in different sunlight conditions. It's the current that's changing. There must be a typing error, you are seeing maybe 4._ watts(0.5v, 8a) per cell. You need to do a lot of research and reading to be able to make a solar panel.
    Attached Images Attached Images

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •