Jac Posted November 4, 2017 Share Posted November 4, 2017 Good day, I have installed a Axpert mks 5kva inverter with 4x110ah batteries as a backup system to dedicated plugs and all the lights in my house, currently Eskom is charging the batteries. I just need to find out how offended should I use the power from the inverter to exercise the battery. Quote Link to comment Share on other sites More sharing options...
pilotfish Posted November 4, 2017 Share Posted November 4, 2017 I don't believe that you will gain anything by "exercising" the batteries - every now and again you will have a grid failure and the batteries will come into use, that is exercise enough. Chris Hobson 1 Quote Link to comment Share on other sites More sharing options...
___ Posted November 4, 2017 Share Posted November 4, 2017 The only reason to "exercise" them is to check that they still work. Suppose your local municipality strikes a deal with Eskom and their power doesn't get cut (this seems to be a common reason for people to get inverters :-) ) and now your expensive UPS sits there floating the batteries, you don't want to discover after 18 months that the batteries are dead when there is finally a power failure. Once a month is ample. It's not going to be beneficial for the batteries, though not really harmful either, it's just a system test. Quote Link to comment Share on other sites More sharing options...
Jac Posted November 11, 2017 Author Share Posted November 11, 2017 What should the power usage be while the inverter is on s/by? The reason why I am asking is because I am monitoring the power usage on a 24hr cycle daily with a Radiant "Owl" energy meter and realised that it increased since the inverter is installed and on s/by. At night the power usage was 161Watts which the refrigerator not running,currently with the same the power usage is 606Watts. Could this be a true reflection? How much power should the inverter use while on s/by? Quote Link to comment Share on other sites More sharing options...
Chris Hobson Posted November 11, 2017 Share Posted November 11, 2017 The Axpert uses about 50W in standby mode and your battery bank probably uses <100W if fully charged. The Owl meter measures apparent power rather than real power so I would not hold the readings as a true reflection of what is going on (especially at low levels of consumption). The usefulness of these meters is to get an idea of usage patterns. Quote Link to comment Share on other sites More sharing options...
saif1985 Posted December 6, 2017 Share Posted December 6, 2017 i have in issue in 5kva . fault 03 is still. battery volt is 49 but inverter show fault 03. Quote Link to comment Share on other sites More sharing options...
Chris Hobson Posted December 6, 2017 Share Posted December 6, 2017 10 hours ago, saif1985 said: i have in issue in 5kva . fault 03 is still. battery volt is 49 but inverter show fault 03. Oooh that does not sound good. Fault 03 is a high battery voltage yet you report a battery voltage of 49V. Have you measured independently with a multimeter? Quote Link to comment Share on other sites More sharing options...
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