Can anyone tell me what voltage they get across the battery terminals when the engine is running. I am only getting about 13.5 volts which I think is on the low side. My 100 series cruiser used to get up to 14.5 volts.
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D4D charging voltage
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Ahhhhhhhhhhhhhhhhhhhhh...what an interesting subject
I have been investigating this for a little bit, you may have seen an earlier thread where I sought some comparisons
The output voltage on the D4D alternator is governed
Mine will do 13.5 - 13.94v when motor is cold, but if it is warmed up I cant ever get better than 13.4 and most of the time 13.2. The reason for my investigations has been because my 2 battery isolator relays trip at 13.4, so it causes me some angst if I stop for a half hour, the relays wont kick across because of insufficient voltage
Tojo have had a good look at my alternator and they are adamant that it is within spec :roll: I ask what "spec" is they say...just like that there (my Prado)
The issue is upsetting some people around the place with Prado's and "lux's, there is a trail of stuffed batteries starting to form
I'll be doing some more talking in the next week or so gathering info from industry experts, my view is that goverining back the alternator is a real good way to kill batteries and Tojo should/could and maybe will take responsibility for changing tried and true industry specs to suit themselves...watch this space
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Originally posted by Team PiggyMaybe the battery is fully charged? Which in turn will command the regulator/alternator to not pump out as many volts as a battery that needs charging?
Have you tried it with lights on, etc?
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Very interesting!! I will be keen to hear what you come up with. Thanks for your help.
Originally posted by xvpradoAhhhhhhhhhhhhhhhhhhhhh...what an interesting subject
I have been investigating this for a little bit, you may have seen an earlier thread where I sought some comparisons
The output voltage on the D4D alternator is governed
Mine will do 13.5 - 13.94v when motor is cold, but if it is warmed up I cant ever get better than 13.4 and most of the time 13.2. The reason for my investigations has been because my 2 battery isolator relays trip at 13.4, so it causes me some angst if I stop for a half hour, the relays wont kick across because of insufficient voltage
Tojo have had a good look at my alternator and they are adamant that it is within spec :roll: I ask what "spec" is they say...just like that there (my Prado)
The issue is upsetting some people around the place with Prado's and "lux's, there is a trail of stuffed batteries starting to form
I'll be doing some more talking in the next week or so gathering info from industry experts, my view is that goverining back the alternator is a real good way to kill batteries and Tojo should/could and maybe will take responsibility for changing tried and true industry specs to suit themselves...watch this spaceCheers
Robbo
2007 D4D GXL, ARB bar, 9000lb warn winch, Koni suspension, poly-airs, roof rack, cargo barrier, cargo drawers, compressor, dual battery system etc
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Not sure if the alternator itself is governed, but I know the alternator is is controlled by the ECU.
Below is the update from Redarc battery isolators where they actually had to drop the rating so it could work with these new alternators.
Hope this helps.
cheers
LesLES
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Yep,
This is true, I had the Redarc in my 100 Series replace for this exact reason early last year. Had the new one removed from the 100 Series and installed in the Prado and have had no problems, at idle my TD sits at around 13.85.[color=#0040FF]Rob[/color]
[color=#0040BF]2012 Altitude D4D &
04 Jayco Eagle Outback[/color]
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D4D battery charging
I took mine to an auto elec today. He said its the lowest voltage he has seen on a modern car. We isolated all accessories etc and still only got 13.5 volts. He then rang the service guys at toyota who said the charging voltage should be 14.2 to 14.5 volts and suggested I should bring it in. The service guy also said that they had a Prado in today with the same problem. Hmmmm interesting! Mine is booked in for next week. I will let you know what transpires.
Cheers
Andrew
Originally posted by xvpradoAhhhhhhhhhhhhhhhhhhhhh...what an interesting subject
I have been investigating this for a little bit, you may have seen an earlier thread where I sought some comparisons
The output voltage on the D4D alternator is governed
Mine will do 13.5 - 13.94v when motor is cold, but if it is warmed up I cant ever get better than 13.4 and most of the time 13.2. The reason for my investigations has been because my 2 battery isolator relays trip at 13.4, so it causes me some angst if I stop for a half hour, the relays wont kick across because of insufficient voltage
Tojo have had a good look at my alternator and they are adamant that it is within spec :roll: I ask what "spec" is they say...just like that there (my Prado)
The issue is upsetting some people around the place with Prado's and "lux's, there is a trail of stuffed batteries starting to form
I'll be doing some more talking in the next week or so gathering info from industry experts, my view is that goverining back the alternator is a real good way to kill batteries and Tojo should/could and maybe will take responsibility for changing tried and true industry specs to suit themselves...watch this spaceCheers
Robbo
2007 D4D GXL, ARB bar, 9000lb warn winch, Koni suspension, poly-airs, roof rack, cargo barrier, cargo drawers, compressor, dual battery system etc
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Update
Hi Peter,
I was supposed to take mine last week but had to postpone. It is booked in next Thursday. I will post the result.
Cheers Andrew
Originally posted by PAL001Boys,
Any update on this issue, how did you go with Toyota.
PeterCheers
Robbo
2007 D4D GXL, ARB bar, 9000lb warn winch, Koni suspension, poly-airs, roof rack, cargo barrier, cargo drawers, compressor, dual battery system etc
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Well Chaps,
Had it back to the dealer today. They said that it is charging to about 13.6 and that is ok. He also said that all the latest cars charge to about that range. I am not convinced and have not finished. I have other avenues to pursue.
Stay tunedCheers
Robbo
2007 D4D GXL, ARB bar, 9000lb warn winch, Koni suspension, poly-airs, roof rack, cargo barrier, cargo drawers, compressor, dual battery system etc
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I have heard the same in a thread or two here on PP (but I can't find it back again ops: ) ... that the new setups don't charge at the same rate .. and that Redarc has changed the settings in their isolators to kick in earlier.
Punters installing the older Redarcs into their new trucks were finding that the isolator didn't kick in and start charging the aux battery.
Cheers
Chippy
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