Sample rate of battery monitor

[roaringgirl]

My understanding from the OP was that the meter is showing a charge current, but the amp hour capacity display is not increasing.

I think it is working 'as designed' although that is not very useful in this case.

Solar and alternator show realtime charge and increase Ah displayed. Tow gen and wind gen do not register realtime current or increase Ah displayed, despite definitely charging the battery.

 

[pvb]

Reading between the lines of the manual and what I have seen with my own installation, I have a feeling that the BEP DCM-600 does not increase the amp hour count for a charging voltage less than 13.5v.

In that case I think it would have already reset to max capacity as the charge current dropped off. From the manual:

Amp hour capacity reset Amp Hour Capacity reading is reset to Max Battery Capacity when the following conditions occur. The Battery Voltage is greater than 13.5V (factory default). The Charge Current is less than 5A (factory default). See note (a) Conditions 1 & 2 must be met for 5 minutes. (a). This should be changed to 4% of amp/hour rating of battery bank ie 220amp/hour bank = 220*4% = 8.8 use 9amps

Which is from where I deduced about the 13.5v threashold. Also mine seems to behave in that way when on solar also.

I wondered where you'd got the idea about 13.5v! The monitor works regardless of the charging voltage. The parameters of >13.5v and <5A are just the ones the monitor uses to decide whether the battery is fully charged. If it decides the battery is fully charged, it will reset the Ah Capacity Remaining reading to whatever battery capacity has been programmed in to it.

 

[ithet]

I wondered where you'd got the idea about 13.5v! The monitor works regardless of the charging voltage. The parameters of >13.5v and <5A are just the ones the monitor uses to decide whether the battery is fully charged. If it decides the battery is fully charged, it will reset the Ah Capacity Remaining reading to whatever battery capacity has been programmed in to it.

Yeah, it was just a hunch based on observations no more. I think we are all agreed that these units will reset to full capacity if enough amps are provided and that there are low charging conditions where they do not register increasing capacity.

 

[pvb]

Yeah, it was just a hunch based on observations no more. I think we are all agreed that these units will reset to full capacity if enough amps are provided and that there are low charging conditions where they do not register increasing capacity.

I wouldn't agree with the latter part of your statement.

 

[ithet]

I wouldn't agree with the latter part of your statement.

Does yours work OK in that case then?

 

[pvb]

Does yours work OK in that case then?

Battery monitors aren't choosy - they just register the amps in and out.