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Thread: How should I rebuild this battery?

  1. #1
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    Default How should I rebuild this battery?

    I have a PC compatible laptop with a 6v 4.2aH SLA battery that is dead but there is alot of room in the case. What should I do to rebuild it, removing the battery to get to it isn't an issue. 8x AA battery 4s2p configuration drops the voltage too quickly on Alkaline cells.
    Wanted: Any old clunky 286-P1 machine that has some kind of working battery or replaceable with off the shelf parts. Preferred: 10+lbs 386 machines.

  2. #2
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    4.2 Ah is quite a bit of capacity, hence the SLA.

    Any problem with replacing it with another SLA?

  3. #3
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    It is a custom size that was made specifically for sharp.
    Wanted: Any old clunky 286-P1 machine that has some kind of working battery or replaceable with off the shelf parts. Preferred: 10+lbs 386 machines.

  4. #4
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    Got some dimensions?

    Some biggish NiMH batteries may do the trick. If you have the appropriate charger, some Li-Ion may also work.

  5. #5
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    I believe ~1.9" x 1.6" x 4.6". Model Number NP4.2-6H by Yuasa.
    Wanted: Any old clunky 286-P1 machine that has some kind of working battery or replaceable with off the shelf parts. Preferred: 10+lbs 386 machines.

  6. #6
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    Does this one look right?

  7. #7
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    Quote Originally Posted by Chuck(G) View Post
    Does this one look right?
    Nope. Looks like this:


    https://www.flickr.com/photos/duncanbayne/4887484631
    Wanted: Any old clunky 286-P1 machine that has some kind of working battery or replaceable with off the shelf parts. Preferred: 10+lbs 386 machines.

  8. #8
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    Eh, I don't think you're going to find a SLA battery in that size.

    But there are a few 6V 5000 maH NiMH/NiCd packs for the RC market that should fit with room to spare.

  9. #9

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    Do note that charging of NiMH and NiCad have different charging methods. NiCads have good high current outputs but not as space efficient as Lead-Acid batteries.
    Dwight

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