Slow crank and starting problems

You can simply test your battery yourself, measure voltage on it while cranking... if it drops below 10.5 you need a new powerfull one...though if the starter has a problem which affects the starting too the voltage drop is greater even on a good battery, if the D2 is manual try to bump start it without cranking and if it starts right away you need a new starter, the problem in this case is not the solenoid but some internal short in the winding or on the collector which disturbs the crank signal too

Try leaving the vehicle locked. If it's unlocked the electrical system might still be active. Locking it might shut it down and reduce current draw.

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Originally Posted by DiscoMick

Try leaving the vehicle locked. If it's unlocked the electrical system might still be active. Locking it might shut it down and reduce current draw.

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Just did a test and amp draw doesn't change when locked??

Battery back up to 12.7 volts!

Have you got a spare battery to try instead of using the one in the truck?

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Originally Posted by trout1105

Have you got a spare battery to try instead of using the one in the truck?

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Might be able to find one at work[emoji6]

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Originally Posted by Lemo

Charged the battery last night battery indicator back to green and up to 13 volts and starts as normal!

Also tested the current draw with keys in but off car unlocked (always like this in the shed) and it's 680mA at the main lead from the battery.

I'll do a few searches today and see what I can find, but is this about normal?

Cheers Lemo

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From memory normal current draw is about 250mA.

If you search AULRO D2 battery drain a couple of threads should come up.

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Originally Posted by ballbag

From memory normal current draw is about 250mA.

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normal is if you cut the 0 from the end of that ;)

Yeah, that’s more realistic!

After my last battery failed I put in a 1000 CCA tractor lead calcium battery. Needs some squeezing to fit. The guy who sold it said it was for farm equipment.

Could start a lunar rocket 😀

Havent looked back.