Nexus Battery Percentage readings from App

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  • Updated 6 months ago
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I recently purchased the Nexus Portable Power Station. I put four 7.5AH batteries in it and the App showed "94%, 93%, 93%, and 93%" for the batteries after being in the station for 36+ hours.  Three of the batteries were brand new (two came withe the Nexus of course), one a year or so old. 
Is this to be expected?  Is there a certain percentage point (90%?) where Ego considers the batteries "fully charged"?
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Robert Affleck

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Posted 6 months ago

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Erik

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I'll check mine again but pretty sure mine say full when idle.
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Oregon Mike, Champion

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Robert, no indication as to charge percentage when you first loaded them on? Or didn't check then? I wonder if the inverter has some "parasitic loads" that could be slowly draining the batteries. 
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Robert Affleck

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Here is a screenshot from the App.  Maybe between 90 and 100% is "fully charged".  

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Oregon Mike, Champion

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Oh, you were charging the batteries?
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Robert Affleck

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It is my understanding that the Nexus charges the batteries when it is plugged in,at a slower pace than the rapid charger, and one at a time, lowest charged battery first.  Some of the batteries were already "charged" by a fast charger when I put them in the Nexus, but then when I check the App it reported the 93%, etc.  I just think Ego may need to clarify this in a FAQ or similar.
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Robert Affleck

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Update.  Checked the Nexus with the App and batteries the App still reported the same 94/93 percentage as before. I unplugged the Nexus and used it to power a vacuum for several minutes.  All four batteries were drained down to around 75%.  I then plugged the Nexus back in, waited several hours for charging, and now the App is reporting 100%!  Nice.   

So I am guessing that if you put a battery into a Nexus that already has a fairly high  charge level, the Nexus's charging algorithm is to leave it alone.
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szwoopp, Champion

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Same system on the stand alone chargers.
If battery is some high percent charged the charger will not initiate a charge.
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Robert Affleck

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Got it.  Now that we have an App to check our battery levels Ego needs to have a FAQ about it.  People love to see 100%. :-)  (One battery was in use elsewhere)
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Blue Angel, Champion

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This will be handy! People have been confused by the chargers not charging their batteries since the beginning. You need to have some significant use on the batteries before the charger will top them back up.

With the Nexus we should be able to see what that magic % number is before the batteries will charge again.