johnm1 wrote:
brulaz - this meter was posted on here not that long ago but I had forgotten about it. I'll have to look into it some more.
Yes that's where I found out about it
Roy - That's the type of meter I was referring to in my OP. I think it'll only do amps out and not in, right?
With either of these meters, how do I know what my SOC is without using the hydrometer? Does voltage give you enough info?
First you check the calibration, both V and A of the meter. I Compared it to the read out of my Solar Charger and a clamp-on ammeter.
And then you fully charge your batts, guesstimate their fully charged Ah, and set the meter. I chose 400Ah, close enough?
So now relative to my guesstimate, it calcs the % of max (400) and the current Ah. I haven't been using it much for the last few weeks, the trailer is unplugged from shore power in storage, and now the % is 100% and Ah is 401 Ah in the afternoon when it's floating. They do say that after a while it will get of sync, depending upon how good your initial calibration is.
I just found the pdf of the ebay unit. Looks like it can give you the remaining AH of the battery (aka - battery fuel gauge).
"Setting the Rated Battery Capacity
Such resets are necessary for the initial installation of either the meter or a battery, so
that the Elite meter correctly display the actual remaining capacity of the battery.
1. Determine the rated capacity of the battery, expressed in Amp-hours, eg 100 Ah.
2. Using the SET button on the panel meter, step to the third item of the debug menu.
3. The LED labelled AH, to the right of the panel meter, will light up.
4. The bottom line of the numerical display will show the battery capacity (Ah).
5. If the reading is the same as the rated battery capacity, then quit debug mode.
6. If the reading differs from the rated battery capacity then adjust the meter.
- 4 -
7. Press the V/W button to increase the reading to the rated value, or press the A/AH
button to reduce the reading to the rated value.
8. Save the settings by pressing the:
- SET button to step the debug menu through to save-settings (ES),
- V/W button to change the display from –n- (No) to -y- (Yes), and SET button to
confirm the selection."
