>Subject: Re: [Duo] Reconditioning Type 3 batteries?
>
>
>>Can I replace the internal NiMH cells? If so, does anyone know of a source
>>in the UK for the correct components?
>>
>>Michael,
>
>There are a number of companies that sell batteries in the UK, try
>www.overlander.co.uk, they sell the NIMH '3/4 AA' sized cells that you get
>inside Duo batteries. I was going to replace the cells inside one of my duo
>batteries but haven't got 'round to it, but I don't see any problems in
>theory. Let me know how you get on if you do it,
I've opened several Duo batteries and they appear to be HR-A AA size
nickel metal hydride cells. If you get replacement cells they must have
TABS. You cannot solder directly to the batteries, but you can overlay
the tabs and solder there.
To open them you repeatedly run a sharp cutting blade along the seam.
Work on each edge until all are cut cleanly. don't worry about cutting
anything inside, your blade will just contact the metal tabs (it might
help if the battery is discharged), scratching but not damaging them.
If your duo battery has a switch, make that edge the last to be sliced.
The two halves can then be separated. Rejoining them is easy if your
cuts are straight and true: The halves fit snugly together with no need
for glue of tape.
Best Regards,
Alex Timbol
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