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Creating 18V Battery Pack with 1.2V 1400mAh Ni-Cd Cells, Soldering Plates & Care Guidance

Jaselek 5826 7
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  • #1 16406373
    Jaselek
    Level 6  
    Hello, I bought 1.2V 1400mAh cells with plates. I have to combine them into an 18V package for the screwdriver. I have a preview in the old package also plus and minus problem will not be. However, I never soldered the plates, everything I read related to welding them to the cell.
    1. Tin and rosin is enough or any other specifics?
    2. Does the plate need to be sanded with sandpaper?
    3. How to take care of batteries when used occasionally?
    4. Should I fully charge and discharge the battery for the first time?
    Thank you in advance.
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  • #3 16406435
    antek1cza
    Level 31  
    Hello
    Jaselek wrote:
    However, I have never soldered the plates
    you can quite simply and quickly (in less than a second) solder the plates to the cells and the plates themselves using the method tested by a colleague @CMS .
    It is a method for people who do not have welders, but also for cautious ones. More here https://www.elektroda.pl/rtvforum/topic3230863.html#15835218
  • #4 16406829
    Freddy
    Level 43  
    szymon122 wrote:
    Tin in rosin will be useless, it will slide on the surface, and when it solidifies, it will fall off by itself. I think I saw specifics for something like this once, but I'm not sure, search for "aluminum soldering"
    Don't write fairy tales, - where do you have aluminum?

    Jaselek wrote:
    1. Tin and rosin is enough or any other specifics?
    2. Does the plate need to be sanded with sandpaper?
    3. How to take care of batteries when used occasionally?
    4. Should I fully charge and discharge the battery for the first time?

    ad.1 Yes, that's enough
    ad.2 There is no need
    ad.3 Keep them charged and recharge them fully regularly (e.g. every month). If they are NiCd cells, do not recharge, but charge only when they are "empty".
    ad. 4 No molding is used.
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  • #5 16406966
    Adam-T
    Level 41  
    Jaselek wrote:
    1. Tin and rosin is enough or any other specifics?
    2. Does the plate need to be sanded with sandpaper?

    Personally, I did not clean the plates and for soldering I used a paste that plumbers use to solder copper pipes.
  • #6 16408316
    Jaselek
    Level 6  
    First, I will try to solder them to plain tin without any additives. Should cells be discharged before soldering? Is the 2.5 cable sufficient as an extension of the plates?
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  • #7 16408359
    czyt
    Level 14  
    Rosin will do nothing, you can overheat the cell: for aspirin - polopyrin you need, that is, for ascor acid: this is how iron and other similar metals are soldered.
  • #8 16408693
    Freddy
    Level 43  
    czyt wrote:
    ... for aspirin - polopyrin is needed, i.e. for ascor acid: this is how iron and other similar metals are soldered.
    If you do not add that you should wash thoroughly afterwards, this post is harmful advice. :) Besides, there is a terrible stench after aspirin. This is a novice user.
    Generally an acid-containing agent (acidum acetosalicylicum).

    Better and cheaper - buy something called "soldering paste" are 20g or 40g packages.
    They are also bigger, but you don't solder that much "hard to solder stuff". Such a 20g package costs less than PLN 3.
    Just remember that you need to wash thoroughly after soldering
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Topic summary

The discussion revolves around creating an 18V battery pack using 1.2V 1400mAh Ni-Cd cells with soldering plates. Key points include the soldering process, where users suggest using tin and rosin, or soldering paste, while cautioning against overheating the cells. It is noted that sanding the plates is unnecessary, and proper care involves keeping the batteries charged and avoiding overcharging. For initial use, fully charging and discharging the battery is not recommended. Users also discuss the importance of cleaning after soldering to prevent damage from residual chemicals.
Summary generated by the language model.
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