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"New" battery can't spin starter ???
#1
Having acquired 2 brand new batteries about 18 months ago, due to 'things' going on, 
I ve  only just got around to finishing my Mk1 Ruby rebuild, The batteries were on a trickle charge on and off, and have enough juice to power lights/coil /etc
but just kicks the starter, (that's rebuilt) then gives up the ghost.
Have I killed my batteries ???  Huh
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#2
Hi Flywheel 

Sounds a lot like a dodgy earth!  I always run an earth lead direct from the battery (or battery isolator if you are isolating the earth) to the bell housing.

Cheers

Howard
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#3
Trust me, it's not the earth, I've fitted 3. Its the battery I'm concerned about. none of the other electrical items.
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#4
Remove the spark plugs, how does it spin over ?
Do we assume you are on 6volt system. Who reconditioned your starter and are you sure it is also 6 volt and not re-conditioned as 12 volts.
Remove the starter switch on top of the starter motor and with a jump lead from the battery, touch it onto the copper contact on the starter motor - same result ?
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#5
Defo 6 volt, had the car 30 years, I did the starter and that's OK.
Done the direct contact trick, no go,
So Have I killed 2 new batteries by leaving them too long ??? as per my original question.
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#6
which make of battery are they?

tony.
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#7
What do they read on a voltmeter when charged?

Are they "gassing" when charged?

Is your charger ok?   What does it register on a voltmeter?
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#8
You need to work through systematically and eliminate possibilities. 1st thing I'd do is check whether the engine turns over freely.
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#9
I had exactly the same issue with a classic type rubber cased battery just before we went into lockdown.   As with you the car had been off the road for almost two years and I had charged the battery every couple of months.

I took it into a battery supplier who put it on charge for a few hours and then tested it.   They didn't charge for the test and I didn't buy a new battery at the time although I have since returned and bought a new "Exide" one from them.
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#10
A quick check to see if it is the battery is to turn the headlamps on and then engage the starter motor. If the lights dim to a glow, then the battery is likely to be duff.
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