Lotus Elan

battery

PostPost by: geni » Tue Oct 04, 2022 9:46 am

pour l'Elan S4 Sprint qu'elle serait la référence en batterie ODYSSEY le mieux adapter

en anglais
for the Elan S4 Sprint that it would be the most suitable ODYSSEY battery reference
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PostPost by: Andy8421 » Tue Oct 04, 2022 2:51 pm

Geni,

Odyssey batteries use a technology called AGM - absorbed glass mat. Quite appropriate really, acid gel is absorbed into a glassfibre mat and placed between the plates of the battery.

These batteries seem to have different charging characteristics than a 'normal' lead acid battery. From Odyssey's website:

If it needs to be charged, how do you properly charge your ODYSSEY battery?
The best way to charge an ODYSSEY® battery is to use an AGM specific charger. Chargers such as the ODYSSEY® Battery Portable Charger have the required 14.7 volts needed to properly charge your ODYSSEY battery. They come in 3 sizes; 6 amp, 12 amp and 20 amp.


14.7 volts is higher than the charging circuit on the Elan is designed to produce. You may find you have problems fully charging this battery - although I believe others on the forum have used them successfully. Perhaps they keep them trickle charged at home.
68 Elan S3 HSCC Roadsports spec
71 Elan Sprint (being restored)
32 Standard 12
Various modern stuff
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PostPost by: snowyelan » Tue Oct 04, 2022 3:03 pm

If the alternator you are using has a separate voltage sensing wire a diode can be added to raise the output voltage slightly.
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