question

Enrico Zanolin avatar image
Enrico Zanolin asked

Power consumption of battery maintenance.

I have a MuliPlus II 5kVA 48V running as a UPS, ie grid only input plus batteries. I have 4 x 180AH AGM batteries and I use the following settings

  • Charge curve : Adaptive + BatterySafe
  • Storage mode : checked
  • Absorption voltage : 57.60V
  • Float voltage : 55.20V
  • Charge current : 52A
  • Repeated absorption time : 1 Hr
  • Repeated absorption interval : 7 Days
  • Maximum absorption time : 8 Hr

My question is as follows.

When the system is charged and idle my Venus GX reports the following battery statistics

  • Mode : Storage
  • Charge state : 100%
  • Consumption : 16W
  • Voltage : 52.8V
  • Current : 0.3A

I suspect that this is normal but I just want to double check to ensure I am not damaging the batteries.

Thank you.

Multiplus-IIbattery charging
2 |3000
Toggle Comment visibility. Current Visibility: Viewable by all users

Up to 8 attachments (including images) can be used with a maximum of 190.8 MiB each and 286.6 MiB total.

1 Answer
JohnC avatar image
JohnC answered ·

Hi Enrico.

16W is tiny, perhaps just covering the natural self-discharge of the batteries. I'd consider it normal.

Your 52.8V indicates a 'storage' mode in place, and for a ups setup, the place to be.

2 |3000
Toggle Comment visibility. Current Visibility: Viewable by all users

Up to 8 attachments (including images) can be used with a maximum of 190.8 MiB each and 286.6 MiB total.