Thread: What is your alternator doing?

That is a far quicker increase in the estimated SoC than I have ever seen.
However, I have never had an opportunity to monitor from a low base (12.0V).
For me, typically the battery current reduces to very low once the SoC gets over 75-80%

It would be interesting to do the same comparison but with the solar disconnected.
Solar would have been adding perhaps 20-25A during that period?

Regards,
Scott

Now that's going to upset the dcdc crowd😊

I'm not convinced that the SoC is accurate & how it is calculated. Other days it hangs around 95% for hours with only 1 or 2A charge into the battery.
When all is fully charged, the alternator output is still around 70A. Power hungry or what?

Originally Posted by Vern

Now that's going to upset the dcdc crowd😊

It is more likely to upset the alternator - that is a lot of current to draw for that amount of time, and wayyyy above what the designers may have expected. With robotic manufacture of practically everything automotive, quality of each alternator is likely to be the same. Therefore if one alternator fails and one doesn't, it is likely that there is some environmental difference - such as a dual battery system.

It would be interesting to do a survey to find out how many failed alternators have been in vehicles with or without a dual battery system.

Originally Posted by Silenceisgolden

It is more likely to upset the alternator - that is a lot of current to draw for that amount of time, and wayyyy above what the designers may have expected. With robotic manufacture of practically everything automotive, quality of each alternator is likely to be the same. Therefore if one alternator fails and one doesn't, it is likely that there is some environmental difference - such as a dual battery system.

It would be interesting to do a survey to find out how many failed alternators have been in vehicles with or without a dual battery system.

Hmmmmmm.

Originally Posted by Vern

Now that's going to upset the dcdc crowd😊

Originally Posted by Silenceisgolden

It is more likely to upset the alternator - that is a lot of current to draw for that amount of time, and wayyyy above what the designers may have expected. Therefore if one alternator fails and one doesn't, it is likely that there is some environmental difference - such as a dual battery system.

Here we go again.


First off, “ALL” alternators are self regulating, so you can not overload them in the first place.


Furthermore, with more than 4,000 D3s and D4s equipped with my isolators worldwide, if your mythical claim had any substance, think by now we would have seen any “ALLEGED” overloading of alternators.


DC/DC devices can charge batteries, but the primary info that is always missing from the grossly exaggerated glossy advertising is just how long they will take to do a job that a D3 or D4 alternator ( and the alternators on most other vehicles ) can do in half the time.

Originally Posted by drivesafe

Here we go again.


First off, “ALL” alternators are self regulating, so you can not overload them in the first place.


Furthermore, with more than 4,000 D3s and D4s equipped with my isolators worldwide, if your mythical claim had any substance, think by now we would have seen any “ALLEGED” overloading of alternators.


DC/DC devices can charge batteries, but the primary info that is always missing from the grossly exaggerated glossy advertising is just how long they will take to do a job that a D3 or D4 alternator ( and the alternators on most other vehicles ) can do in half the time.

Yep, I expect you are right, but it would be interesting to do a survey just the same. No idea how to do such a survey though.

[QUOTE=Milton477;2680854]

Screen shots from the GAP app on my phone:

Milton,
Why do your screenshots show 'Ign. Off' and '11.7V' yet also show alternator current draw?