Re: REQ: Reliable source for NiMH batteries (type 4/3A)
From: mike (spamme0_at_juno.com)
Date: 06/28/04
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Date: Mon, 28 Jun 2004 11:50:58 -0700
Jack wrote:
> Hello,
>
> I'm rebuilding a battery pack for a laptop. Can anybody recommend a
> *reliable* inexpensive source for individual NiMH cells?
>
> I need a total of 8 cells, type 4/3-A (1.2v, ~4000 mAhr), with solder
> tabs.
>
> Thanks!
>
> -Jack-
>
> n2hqc@3RDPLANETlink.net
> To reply, use the 3rd planet's real name.
>
DigiKey will sell them to you. Can't get more reliable than that.
Just in case you've never tried this before, there are issues.
Tiny differences in the thickness of the plastic coating can mean
the difference between fit and no fit when you stack up 8 of 'em.
I've had to peel off the heat-shrink and wrap them with packing tape.
That's risky even on a good day.
There's sometimes not room for the solder connection between cells.
You may have to spot weld 'em just to get the case back together.
Don't get me started on high-rate charge acceptance differences between
brands/types etc. Read the specs on the cells and understand the
charge termination methods used by your device.
YMMV.
At over $60 for the cells, it may not be worth rebuilding.
You DID emphasize *reliability* over cost...
mike
-- Return address is VALID. Bunch of stuff For Sale and Wanted at the link below. Toshiba & Compaq LiIon Batteries, Test Equipment Yaesu FTV901R Transverter, 30pS pulser Tektronix Concept Books, spot welding head... http://www.geocities.com/SiliconValley/Monitor/4710/
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