Electroquest 30 Amp Charger difficulties - Maximum Battery Bank Size?

[Dr Bob]

44 minutes ago, nicknorman said:

Anyway all this silly arguing is getting rather tedious. So I'm going to take charge and say: Dr Bob, you are banned from ever buying a Smartgauge. It is far too clever for you to understand how it could work and anyway, you don't need it. Never Ever buy a Smartgauge or you'll have me to answer to.

There, that seems to have solved the problem.

Agreed. I promise never to buy one!

[nicknorman]

6 minutes ago, Dr Bob said:

Agreed. I promise never to buy one!

Good. That's sorted then.

[Dr Bob]

34 minutes ago, nicknorman said:

Good. That's sorted then.

....can SWMBO buy one?.......

[nicknorman]

6 minutes ago, Dr Bob said:

....can SWMBO buy one?.......

NO. Well, only if you promise never to look at it!

[alan_fincher]

52 minutes ago, nicknorman said:

NO. Well, only if you promise never to look at it!

Surely he is allowed to look at it, (even buy HIMSELF one, and then look at it), provided...................



............... he doesn't actually connect it to his battery bank.

More seriously, this from the Merlin site, clearly penned by Gibbo, may to some extent answer the why 0.15 volt resolution on the display....

Quote

 

Why does the voltmeter reading alternate between say 12.35 and 12.40 volts?

Either because the battery voltage has ripple on it and SmartGauge is displaying the measurement from different points in the ripple on each measurement or because the battery voltage is directly between these two readings. A normal DC voltmeter can severely filter the input to remove any ripple thus giving the illusion of continuous, identical, readings, however this ripple is very important as far as it's effect on the battery is concerned therefore SmartGauge needs to be able to measure it and therefore displays the actual voltage at the time of the measurement as opposed to an average over several measurements.

 

 

[WotEver]

If the voltage is, say 12.57V then the SmartGauge display may alternate between 12.55 and 12.60. You’ll note in this instance that it displays 12.55 for longer than 12.60 and the mark space ratio gives a guide to the actual voltage. 

Edited November 7, 2017 by WotEver
Accuracy!