As new member and happy new owner of my first (old) 7, I had to change the battery and was looking extensively on the forum to find what was recommended / best.
Finally, I took the same as previously mounted, in order to avoid any issue with mounting, cables positioning, ...
So just to share here the data in case it can help any other member.
Car: Seven S3 1989, 1.7 Xflow, 4 speed live axle
Battery location: below carburetors, original position
Battery brand: Motobatt
Capacity: 21 Ah
Dimensions: 175*155*87mm (6.9x6.1x3.43) - can be fitted without any other item removal from under the chassis
Advantage: it has 2 positive and 2 negative points, which may help adaptation of different configuration.
Sourcing and Price: I got it delivered to Belgium from www.mymotor.nl for 105€ (97€ battery + 8€ tracked shipment).
Hope this helps someone !
Motobatt are very popular amongst bikers because of the versatility of the twin connection points making fitment much easy.
Lotus Seven Club Leadership Team Member
The register for all numbered limited-edition Caterhams ....... www.thecaterhamregister.net ...... www.instagram.com/thecaterhamregister
Welcome, Cedric. I hope you enjoy your new old 7 soon.
Cedric, thanks for the info. Did it fit in the original battery cradle or need modification? Also, was your original battery a Banner?
Datasheet here: https://www.motobatt.us/documents/Motobatt%20spec-MBTX20UHD.pdf
Available from Tayna at £63.75 inc vat.
Any thoughts on the following batteries?
ENDUROLINE EC680 AGM BATTERY 26AH 600A (PC680) £87.96
CCA not stated
AGM12-18 EXIDE MOTORCYCLE BATTERY 12V 18AH 250A 4584 £54.98
ODYSSEY PC680 BATTERY 12V £127.92
Looking for 13.5 bhp and may have found it NOT.