DC Power Where is it going?

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Bob Akers asked Nov 21, '20

DC Power Where is it going?

Hi all

System is LiFePO4 12v battery (EVE 2p4s), REC BMS, CCGX, Multiplus (3000/12/230/50) and smartsolar 100/30.

Has DC System turned on and REC BMS (for Victron), CCGX, Multiplus and MPPT are all playing nicely.

Battery is at 70%, inverter is on but no AC load, MPPT output is 29A.

CCGX is displaying a 158w DC load. Removed all dc fuses to ensure that there was no load other than system control and idle Multiplus and DC load did not change. Turned Multiplus off via CCGX and no change to DC load.

Check REC BMS and only 14.22A to battery is displayed.

Where is the other approximately 13 amps going?

Thanks

Bob

BMS CCGX Color Control dc system

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Answer 1 · 2020-11-21T07:52:25Z

ess-and-solar-solutions answered · Nov 21, 2020 at 07:52 AM

Hello @Bob Akers Do you have DC generation sources? If not disable on the gx device under settings the "Has DC system" option.

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Answer 2 · 2020-11-21T10:52:37Z

Bob Akers answered · Nov 21, 2020 at 10:52 AM

Hi @ess-and-solar-solutions

I do have a 40a DCDC charger fitted but not switched on at the moment so would prefer to leave the Has DC source left on if possible.

ill switch has DC source off tomorrow and see if it makes a difference.

thanks

Bob

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Answer 3 · 2020-11-23T01:20:11Z

Bob Akers answered · Nov 23, 2020 at 01:20 AM

Ok, turned has DC off and no difference, still not seeing full output of MPPT to battery.

Noticed today that the DC usage appears proportional to solar output:

Am I not just reading this right?

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