Hi Becky,
At the theoretical level, the PO may be right.
At the practical level, the reason that we use a single battery now is
because batteries are so much better than they were then that the
capacity of a single battery is more than sufficient to meet the needs of
the car. MG thought so; they dropped the double battery in favor of a
single.
My 75 had a single. Although the car had some 80,000 original miles on
it and lived outside, it was my daily driver in Maine and it always
started. My '72 GT had two batteries. I have a single in it now, and
it's just fine.
Unless invisible authenticity is a goal, I'd say to take advantage of
modern technology and use a single. Save the weight and the money.
Bob
On Thu, 21 May 1998 06:39:25 -0500 Becky Mahoney <bmahoney@home.com>
writes:
>On the subject of batteries...please don't throw anything at me for
>asking this...I have one 12V battery now and the SO is STRONGLY
>encouraging me to convert back to two 6V set up. Says there is more
>storage capacity in two. Lights will be brighter, will crank
>better..I
>believe I've seen some comments to the opposite. Anyone care to clear
>this up for me?
>
>TIA
>
>Becky
>Always wanting more power!!!!
>69 roadster
>
>Chuck Schaefer wrote:
>>
>> Lets see:
>>
>> Assuming a battery rated around 50 ampere hours, and that the car
>could
>> still start at 25% charge (not unreasonable). This leaves us a
>useable
>> charge of 37.5 AH (ampere hours). At 28mA discharge rate, it would
>take
>> (37.5 / .028) hours, or 1339.285714286 hours to discharge to the
>> useable cutoff charge. This is 55.80357142857 days without use.
>>
>> I don't see this as an unreasonable discharge rate although it might
>be
>> a just a little high.
>>
>> Any comments?
>>
>> Chuck Schaefer
>>
>> Don Mathis wrote:
>> >
>> > When I place an ammeter between the negative post on my battery
>and the
>> > battery wire, I read 28 ma with nothing turned on. We traced
>everything and
>> > it may just be a bad batery. Anyone else ever see this? Thanks-
>> >
>> > Cheers
>> >
>> > Don Mathis,Ph.D.
>> > donmathis@lucent.com
>> > '61 MGA
>> > '37 Derby Bentley (B190KT)
>
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