Author Topic: Watching the new Whizbang and batteries today...  (Read 146 times)

alyaz

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Watching the new Whizbang and batteries today...
« on: October 21, 2018, 07:06:34 PM »
Just trying to get a feel for the new battery bank and the newly installed Whizbang Jr.  Thought I would watch it for a bit before making any determinations of where to set the end amps etc.

So these are the readings I got today.  The bank got about an hour and a bit of a bulk charge this AM from the gen, which I turned off when it got into absorb.

These Whizbang readings are when it was in absorb from solar charging:

noon - 16.5 amps
1 PM - 15.3 amps
1:40 - 14.7 amps
1:50 - 14.4 amps
3:00 - 14.2 amps
3:30 - 13.2 amps

I never saw it get lower than when it was hanging around 13.2 amps.  After that I lost enough sun to keep it in absorb.

So, Rolls (Steve) did a video recently that suggests for us Rolls users to use 1.5% of the A/hr capacity to determine end amps.  So with a new 1105 a/hr battery bank I was expecting to see the amps level out around 16.5.

What am I to make of the lower than anticipated amps across the shunt?  New battery bank?  That my end amps should or could be set lower than 16.5 amps? 

My SOC was 1.265 and within +/- .005 across the bank.  Just trying to make sense of things :)

Thanks... 
3.3 kW solar. (1.5 kW Helios - MN Classic 150 CC; .8 kW CSun - MN Classic 150 CC; 1 kW Sharp - MN  Classic 250 CC); Magnum PAE-4024 Inverter, AGS, ARC, BMK. Whizbang Jr. Midnite Solar battery monitor, 5 Midnite SPD’s. 24V Rolls 4KS21P- 1105 a/hr FLA.  10 kW Perkins Diesel.

Westbranch

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Re: Watching the new Whizbang and batteries today...
« Reply #1 on: October 21, 2018, 07:30:49 PM »

Al, don't forget there is a break-in period of  ~ 50 FULL CYCLES, IIRC. 

You are probably going to see lots of variation as the plates "form" from discharge and recharge cycles.

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alyaz

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Re: Watching the new Whizbang and batteries today...
« Reply #2 on: October 21, 2018, 07:47:50 PM »
copy.  thought that is what it might be :)
3.3 kW solar. (1.5 kW Helios - MN Classic 150 CC; .8 kW CSun - MN Classic 150 CC; 1 kW Sharp - MN  Classic 250 CC); Magnum PAE-4024 Inverter, AGS, ARC, BMK. Whizbang Jr. Midnite Solar battery monitor, 5 Midnite SPD’s. 24V Rolls 4KS21P- 1105 a/hr FLA.  10 kW Perkins Diesel.

Matrix

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Re: Watching the new Whizbang and batteries today...
« Reply #3 on: October 21, 2018, 11:18:33 PM »
I think it all comes down to hydro readings. I can see EA amps level off at different current levels depending on what I have the V absorb set to. If I set the absorb voltage to 29.6v which is the trogan recommended - I see a lower amp when EA levels off BUT my batteries where not fully SG charged. So I could lower the EA and have the charge  cycle run all day at very low amps OR raise the V absorb setting, and the EAs the batteries level off at is higher and batteries charged more completely.
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boB

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Re: Watching the new Whizbang and batteries today...
« Reply #4 on: October 22, 2018, 12:27:59 AM »

It may very well have to do with the Rolls batteries breaking in.  I've heard 100 cycles but 50 cycles might be right too.

Steve Higgens is the man when it comes to this kind of stuff.  He definitely knows what's going on.

boB
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alyaz

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Re: Watching the new Whizbang and batteries today...
« Reply #5 on: October 22, 2018, 10:31:18 AM »
Copy.  Thanks for humouring me, as it all helps me figure this stuff out  ;)
3.3 kW solar. (1.5 kW Helios - MN Classic 150 CC; .8 kW CSun - MN Classic 150 CC; 1 kW Sharp - MN  Classic 250 CC); Magnum PAE-4024 Inverter, AGS, ARC, BMK. Whizbang Jr. Midnite Solar battery monitor, 5 Midnite SPD’s. 24V Rolls 4KS21P- 1105 a/hr FLA.  10 kW Perkins Diesel.