Page 8 of 20 FirstFirst 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 ... LastLast
Results 141 to 160 of 394
  1. #141
    Join Date
    Nov 2012
    Location
    Cape Town
    Age
    33
    Posts
    71
    Thanked: 23

    Default Re: Lithium vs Lead Acid

    Quote Originally Posted by Die SwartKat View Post
    Mypro D,

    Your aux box looks mighty neat! I see on the outside it says 12V aux box but...…..

    But please explain to me what you did in the 1st pic.

    For the life of me, I cannot figure out how those cells are connected.

    This will bug me for the whole day and I need to know. It would've helped a lot if I could figure out which side of each battery is + and which is -

    It looks like parallel / serie connection? There just too many bars in my layman mind

    What capacity are the individual cells and how did you connect them?
    Dont worry, I felt the same way!

    Quite correct, they are in Series/Parallel.
    If you look at the cells there are black and cream terminals. Black is positive and Cream is Negative.
    The cells are 3.2 Volts each with a capacity of 120AH per cell ( 2nd Life, Originally at 150AH )

    The BMS is wired to the first main cell B- and Positive then basically skips a cell and connects to the next one.
    I stuck numbers on them so you can see if you look close enough. There is a main B- sticker and 1,2,3,4 stuck across the cells.

    The only reason its done like this is because its the only way I could have made everything fit in there.
    Last edited by Mypro-D; 2020/10/01 at 08:40 AM.

  2. #142
    Join Date
    Feb 2009
    Location
    Pretoria
    Age
    45
    Posts
    4,855
    Thanked: 1026

    Default Re: Lithium vs Lead Acid

    Quote Originally Posted by Mypro-D View Post
    Dont worry, I felt the same way!

    Quite correct, they are in Series/Parallel.
    If you look at the cells there are black and cream terminals. Black is positive and Cream is Negative.
    The cells are 3.2 Volts each with a capacity of 120AH per cell ( 2nd Life, Originally at 150AH )

    The BMS is wired to the first main cell B- and Positive then basically skips a cell and connects to the next one.
    I stuck numbers on them so you can see if you look close enough. There is a main B- sticker and 1,2,3,4 stuck across the cells.

    The only reason its done like this is because its the only way I could have made everything fit in there.
    Ok I almost there.

    I count 8 individual cells. So 4 sets of 2 paralleled cells which is then seried giving 12.8Volts in total.

    The black and cream coloured terminals makes it so much easier.

    Are you saying that each of those 8 cells have 120Ah capacity?

    That would mean in your connection, you would have 480Ah capacity? Is this correct? This is incredible! Or am I seriously missing something?
    Nico Swart

    Triton 2.5DiD D/C with SS
    ZS6NJS

    One day, or Day One. You decide. Tomorrow is promised for no one!

  3. #143
    Join Date
    Feb 2009
    Location
    Benoni
    Age
    45
    Posts
    4,596
    Thanked: 841

    Default Re: Lithium vs Lead Acid

    Quote Originally Posted by Die SwartKat View Post
    Ok I almost there.

    I count 8 individual cells. So 4 sets of 2 paralleled cells which is then seried giving 12.8Volts in total.

    The black and cream coloured terminals makes it so much easier.

    Are you saying that each of those 8 cells have 120Ah capacity?

    That would mean in your connection, you would have 480Ah capacity? Is this correct? This is incredible! Or am I seriously missing something?
    Should be 240Ah.
    2007 Touareg 3.0 V6 TDI (Facelift, Air, Rear Diff Lock, Rear Mounted Spare)
    2008 Audi A4 B8 2.0 TDI (Multitronic)
    2009 KTM 990 Adventure (Weekend Fun)
    2012 Imagine Trailvan 4-Sleeper
    * consumption needs to be seen in the context that the vehicle is towing an Imagine Trailvan 30% of the time

  4. #144
    Join Date
    Feb 2009
    Location
    Pretoria
    Age
    45
    Posts
    4,855
    Thanked: 1026

    Default Re: Lithium vs Lead Acid

    Quote Originally Posted by Kortgat View Post
    Should be 240Ah.
    Ok yes, I see my mistake thank you.

    Still, that is pretty impressive!
    Nico Swart

    Triton 2.5DiD D/C with SS
    ZS6NJS

    One day, or Day One. You decide. Tomorrow is promised for no one!

  5. #145
    Join Date
    Nov 2012
    Location
    Cape Town
    Age
    33
    Posts
    71
    Thanked: 23

    Default Re: Lithium vs Lead Acid

    Correct

    240Ah capacity. I doubt I would ever need so much power but you never know!
    It worked out cheaper than than the Blue Nova I bought.

  6. The Following User Says Thank You to Mypro-D For This Useful Post:


  7. #146
    Join Date
    Sep 2020
    Location
    Krugersdorp
    Age
    50
    Posts
    2
    Thanked: 0

    Default Re: Lithium vs Lead Acid

    Quote Originally Posted by Mypro-D View Post
    Dont worry, I felt the same way!

    Quite correct, they are in Series/Parallel.
    If you look at the cells there are black and cream terminals. Black is positive and Cream is Negative.
    The cells are 3.2 Volts each with a capacity of 120AH per cell ( 2nd Life, Originally at 150AH )

    The BMS is wired to the first main cell B- and Positive then basically skips a cell and connects to the next one.
    I stuck numbers on them so you can see if you look close enough. There is a main B- sticker and 1,2,3,4 stuck across the cells.

    The only reason its done like this is because its the only way I could have made everything fit in there.
    This sounds like a very good setup, where did you get the batteries, the size of LBSA batteries indicate they will not fit in the NL Box.

  8. #147
    Join Date
    Nov 2012
    Location
    Cape Town
    Age
    33
    Posts
    71
    Thanked: 23

    Default Re: Lithium vs Lead Acid

    Quote Originally Posted by gs23139 View Post
    This sounds like a very good setup, where did you get the batteries, the size of LBSA batteries indicate they will not fit in the NL Box.
    They literally squeeze in. It was a bit of a tight fit.
    Have a look at the picture posted as to the layout.

    I had to change from being one long bank ( as per their picture sent to me )

    But they fit albeit extremely snug

  9. #148
    Join Date
    Nov 2008
    Location
    Alberton
    Age
    53
    Posts
    466
    Thanked: 180

    Default Re: Lithium vs Lead Acid

    Thanks to contributors to this tread I decided to also take the plunge. I built 2 x 12V 240AH batteries on Saturday, and installed both in the caravan. Purchased 2 battery boxes from ODW before I knew if they were going to fit, but luckily they did. Weight of one battery came to 24.1kg, 2kg less than the ones I replaced, but with almost 300AH usable gain.

    Some photo's of the build.
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	IMG_3924.jpg 
Views:	229 
Size:	339.8 KB 
ID:	596100   Click image for larger version. 

Name:	IMG_3926.jpg 
Views:	225 
Size:	334.0 KB 
ID:	596101   Click image for larger version. 

Name:	IMG_3927.jpg 
Views:	256 
Size:	296.1 KB 
ID:	596102   Click image for larger version. 

Name:	IMG_3929.jpg 
Views:	254 
Size:	383.2 KB 
ID:	596103   Click image for larger version. 

Name:	IMG_3930.jpg 
Views:	272 
Size:	356.0 KB 
ID:	596104   Click image for larger version. 

Name:	IMG_3931.jpg 
Views:	220 
Size:	372.5 KB 
ID:	596105   Click image for larger version. 

Name:	IMG_3934.jpg 
Views:	220 
Size:	448.6 KB 
ID:	596106  
    Simplicity is the ultimate sophistication.
    - Leonardo Da Vinci
    Also on

  10. The Following 2 Users Say Thank You to Rooikop For This Useful Post:


  11. #149
    Join Date
    May 2009
    Location
    Pretoria
    Age
    57
    Posts
    3,426
    Thanked: 234

    Default Re: Lithium vs Lead Acid

    Rooikop

    that looks good

    All in top of your head total cost and

    most or all imported from china ?

  12. #150
    Join Date
    Nov 2008
    Location
    Alberton
    Age
    53
    Posts
    466
    Thanked: 180

    Default Re: Lithium vs Lead Acid

    Batteries with some other bits and bobs was just on R 19,500, the 2 battery boxes from ODW was R379 each, and some other odds and ends such as the duct tape etc. I recon another R 250.

    Bought from LBSA, and they do import from China.
    Simplicity is the ultimate sophistication.
    - Leonardo Da Vinci
    Also on

  13. #151
    Join Date
    Aug 2019
    Location
    PTA
    Posts
    93
    Thanked: 26

    Default Re: Lithium vs Lead Acid

    Would I be correct in assuming that one of these kits of would fit in a National Luna battery box and connecting up the box with the positive to the battery positive and the negative to the BMS would mean that all the input/output on the box would then continue to work as normal? It looks like you can fit 8 cells into a standard battery box, so a 120ah kit would need a bit of padding around it to keep everything in place.

    National Luna battery box for reference:
    Click image for larger version. 

Name:	National-Luna-12V-Auxiliary-Battery-Box-01.jpg 
Views:	167 
Size:	31.8 KB 
ID:	596122

  14. #152
    Join Date
    Aug 2009
    Location
    JHB
    Age
    67
    Posts
    1,006
    Thanked: 233

    Default Re: Lithium vs Lead Acid

    Hi Rooikop

    Is that 16mm wire that you connected to the terminals and if so do you mind telling me where you bought the blue wire?
    Thanks

  15. #153
    Join Date
    Apr 2010
    Location
    Port Elizabeth
    Age
    70
    Posts
    1,509
    Thanked: 1123

    Default Re: Lithium vs Lead Acid

    Quote Originally Posted by gs23139 View Post
    This sounds like a very good setup, where did you get the batteries, the size of LBSA batteries indicate they will not fit in the NL Box.
    Just use a Common ol Hi Lid Wolf Pack ..10 % of the cost of an NL Box

  16. #154
    Join Date
    Nov 2008
    Location
    Alberton
    Age
    53
    Posts
    466
    Thanked: 180

    Default Re: Lithium vs Lead Acid

    Quote Originally Posted by Woolf View Post
    Hi Rooikop

    Is that 16mm wire that you connected to the terminals and if so do you mind telling me where you bought the blue wire?
    Thanks
    That blue cable is 25mm "welding cable", leftovers from my home solar system that came in very handy. Available from your local auto electrician and I think 4x4 direct also stock.
    Simplicity is the ultimate sophistication.
    - Leonardo Da Vinci
    Also on

  17. The Following User Says Thank You to Rooikop For This Useful Post:


  18. #155
    Join Date
    Nov 2008
    Location
    Alberton
    Age
    53
    Posts
    466
    Thanked: 180

    Default Re: Lithium vs Lead Acid

    Quote Originally Posted by plakkie View Post
    Would I be correct in assuming that one of these kits of would fit in a National Luna battery box and connecting up the box with the positive to the battery positive and the negative to the BMS would mean that all the input/output on the box would then continue to work as normal? It looks like you can fit 8 cells into a standard battery box, so a 120ah kit would need a bit of padding around it to keep everything in place.
    Mypro-D has actually done so, see his post #129
    Simplicity is the ultimate sophistication.
    - Leonardo Da Vinci
    Also on

  19. #156
    Join Date
    May 2014
    Location
    Tshwanetoria
    Age
    68
    Posts
    2,326
    Thanked: 1206

    Default Re: Lithium vs Lead Acid

    Quote Originally Posted by Peter Betts View Post
    Just use a Common ol Hi Lid Wolf Pack ..10 % of the cost of an NL Box

    And take up twice the space?



  20. #157
    Join Date
    May 2014
    Location
    Tshwanetoria
    Age
    68
    Posts
    2,326
    Thanked: 1206

    Default Re: Lithium vs Lead Acid

    OK, as promised.
    Please critique my effort.

    I used 4 "new" cells from LithiumSA @ R6 547, including the BMS, some cabling and lugs.
    Installed in a battery box from Outdoor Warehouse @ R379
    On/Off switch and fuse box from 4x4 Direct @ R355 and R350 respectively
    Some odds and end from my own "Builders Warehouse Light" toolbox.

    Sorry, add to that the sockets (Hella, USB and Cigarette and Voltmeter (NL)) that I also got from ODWH - that was quite a few bucks!

    Yes, that is an 5l upside down ice cream bucket that you see. It acts as a placeholder - I am pretty sure that I will be able to fit another 4 cells, to up the battery to 240 A/h, using a combination of series and parallel links between the cells. But I am not brave enough for that yet!

    Attached Thumbnails


    Thanks to Wedwo, Tron, Gerlach, Kortgat, Rooikop, Ekkekan, Dungbeetle and All the others that gave me the courage and the knowledge, to do this!
    Last edited by hatjohan; 2021/01/19 at 02:33 PM.



  21. The Following 9 Users Say Thank You to hatjohan For This Useful Post:


  22. #158
    Join Date
    Nov 2015
    Location
    Cape Town
    Posts
    964
    Thanked: 1323

    Default Re: Lithium vs Lead Acid

    Quote Originally Posted by hatjohan View Post
    Please critique my effort.

    Well done, neat and looks professional!

    With my "Doctorial Degree" in "what the f. not to do", that "rubber mat" over the battery poles, I would have used another ice cream bak over them batt poles.

    Because once it is close, is stays closed i.e. no accidental chance of anything coming in touch with all those "enticing" (come on, touch us, we dare you ... ) battery poles, if anyone every has to open the box again.
    Political Correctness
    Political Correctness is a doctrine, fostered by a delusional illogical minority, rabidly promoted by a unscrupulous mainstream media which holds forth the proposition that it is entirely possible to pick up a turd ... by the clean end!

    Saw this in a pub - no idea why the wife does not see it so:
    I'm not opinionated ... I'm just always right!

  23. The Following 2 Users Say Thank You to the_terrible_triplett For This Useful Post:


  24. #159
    Join Date
    Jul 2014
    Location
    Centurion
    Age
    35
    Posts
    11
    Thanked: 13

    Default Re: Lithium vs Lead Acid

    My effort as well. Also used Lithium Batteries SA new 100AH cells. Built all into an ammo can from Tentpro. WRND DC-DC charger also fitted in there. Did a 4500km roadtrip and it functioned flawlessly! All in all I'm super happy with the setup

  25. The Following 6 Users Say Thank You to stormjp For This Useful Post:


  26. #160
    Join Date
    May 2014
    Location
    Tshwanetoria
    Age
    68
    Posts
    2,326
    Thanked: 1206

    Default Re: Lithium vs Lead Acid

    Quote Originally Posted by stormjp View Post
    My effort as well. Also used Lithium Batteries SA new 100AH cells. Built all into an ammo can from Tentpro. WRND DC-DC charger also fitted in there. Did a 4500km roadtrip and it functioned flawlessly! All in all I'm super happy with the setup

    Hey, great minds!



  27. The Following User Says Thank You to hatjohan For This Useful Post:


Page 8 of 20 FirstFirst 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 ... LastLast

Bookmarks

Posting Permissions

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