You can have them with pleasure Neil
I'll put them in my box of 'things to remember take to the meet'.
(now just watch me forget the bleedin' box!)
They're not the same size as the original batteries of course, since they're no longer available, but with a bit of fettling, it should be possible to get them to fit.
From memory, I think the original batteries consist of 2 x 3.6v batteries in series, giving a total of 7.2v.
My plan was to either use 2 of the 3.6v batteries (in the 2nd link above), or the single 7.2v pack (in the first link). From memory, I think the original batteries had a lower capacity, something like 140mAh each, so either option should be at least as good as the original batteries.
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Mark
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2002 FE S8 Ebony Black Pearl
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Cars Owned:
The Tesla Era: 2020 Model S Performance Ludicrous+ (present)
(Black, with all black premium interior and carbon fibre décor, 21" sonic carbon twin turbine wheels and FSD capability)
The Audi Era: '97 A8 4.2 (Ming Blue) --> '96 A8 4.2 QS (Dark Green) --> '02 FE S8 (present)
The Citroen Era: '84 BX 1.6 RS --> '89 BX 1.9 DTR Turbo --> '94 XM 2.0L Turbo --> '96 XM 2.0L Turbo Exclusive --> '00 Xantia Activa 2.0L Turbo
The Banger Era: '76 1.2L Lada VAZ-2101 (Ruski Fiat 124) --> '80 1.7L Morris Ital HL, finished in Ermine White and Rust