Help with setting up and using DC120100C SOC battery monitor

i don't think you need to calibrate the voltage, mine reads very close to my DMM

voltage versus SOC is an indicator of battery 'condition'
noting what is is when new, and what it is later, gives you an idea of how the battery is aging, aka holding up
saying comparing Volts at 80% soc now
and then again a few months from now or next spring etc..

i watch volts when charging against how many amps the batteries are taking at 'that voltage' against the SOC ampHr count

'trends and tendencies' as Mexi is always saying

That clears it up a bit - Thank you.

- Should I be concerned about the voltage?
- Do I need to calibrate it or is it "good enough" out of the box?

Thanks so much for the video. Such a simple thing and it helped a bunch.

We're not heavy users of the batteries (no 120VAC stuff running off the batt's). However, I don't like getting caught with my pants down if I run out of juice and I could have recharged during the day. I just don't like to "worry". If I worry too much, I run out of beer and, well, we don't want to go there!

Mrwizard
Thank You

608 is the amphrs still in my bank (you set your banks total size, the use number is removed from the set number, the number displayed is what is left in the bank}
the AH capacity is set at 674, 674 is full, 100% SOC

608 is approx 90% SOC

.

the bottom button the AH button, pushing this one cycles thru the the display
differernt little LEDs on the right hand side will be on indicating which mode is being displayed

AMPS rate of charge or discharge ... LED 'A'

Amp hours , shows present amphr count, goes down if discharging
goes up, when charging, will stop counting when it hits your 230 preset... LED 'AH'

Percent AKA SOC gives you a 3 digit number like 87.2 LED '%' will be on

look at this video, i cycle it thru the display modes
batteries are at 608 AH 90% SOC down 66ah from the 674ah set point
using about 21amps discharge
there is a CHARGE LED above the amps led, the charge LED lights when you are charging, not on and the amps reading is discharge/use
there is NO plus or minus sign

http://vid298.photobucket.com/albums/mm251/Mr__Wizard/20160817_234329_zpsfd3htmvx.mp4

you can watch how much you are taking out
or set it on percent, and when you see it get to a certain level like 75% or 50% do a recharge

it varies depending on your style of camping
the first day you might want to go about your normal USE routine, and then check the ah count and percent numbers before the recharge ?

we are heavy users and recharge every day, but you may not need to

I guess the instructions for my Trimetric were worth a $100. They came with a great monitor too. :)

I didn't see an owners manual link on ebay. If you can take a pic of the instructions maybe we can help you through it. I do understand how poorly some of those instructions can be.

I have no idea. I've used just a voltmeter for years. Close enough.

At least the price was right.