Having to cut flanges off the case in order to make it fit will
invalidate any
guarantee, cross your fingers and hope they don't spot it if you
have to
claim.
I have returned altered batteries with no issue, they are just going
to dispose of it anyway. Cutting plastic away will not alter the
batteries operation.
You also need to change the hold-down arrangements for a 12v.
Gravity holds the battery down just fine so no need to redo anything
with the hold down
These are just my experiences.
On Tue 09/05/26 05:29 , "Paul Hunt"
sent:
If a battery has gone flat you can often recover most of its
apparently lost
capacity by giving it a boost charge i.e. charge it at a higher
voltage than a
conventional trickle charger or even on the car, i.e. greater than
14.5v for a
couple of hours. Some years ago Mercedes were having to select
alternator
voltage regulators picking the ones that gave a voltage at the
higher end of
the tolerance as the ones at the lower end were allowing the battery
to
gradually lose capacity.
Whilst it's quite likely that the original tar-top batteries *are*
original
technology inside, there is no reason why modern technology couldn't
be or
isn't used, and I'm aware of at least three different styles of 6v
battery for
the MGB. The original capacity was 58Ah/250CCA and I have found that
more
than adequate for the UK, although I don't use the roadster in temps
below
freezing and it's garaged. This capacity is available from a number
of
suppliers, and Moss Europe have a 'heavy duty' 63Ah/295CCA as well.
Whilst
modern, physically smaller 12v batteries do have a greater CCA they
tend to
have a lower Ah rate which means whilst they will have better
cranking
performance i.e. for cold conditions they will go flat quicker under
conditions like stuck in traffic with lots of electrical stuff
running, or if
you have to park anywhere with lights on.
Having to cut flanges off the case in order to make it fit will
invalidate any
guarantee, cross your fingers and hope they don't spot it if you
have to
claim. You also need to change the hold-down arrangements for a 12v.
PaulH.
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