Watching the new Whizbang and batteries today...

Started by alyaz, October 21, 2018, 07:06:34 PM

Previous topic - Next topic

alyaz

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


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.

Enjoy.
KID FW1811 560W >C&D 24V 900Ah AGM
CL150 29032 FW V.2126-NW2097-GP2133 175A E-Panel WBjr, 3Px4s 140W > 24V 900Ah AGM,
2 Cisco WRT54GL i/c DD-WRT Rtr, NetGr DS104Hub
Cotek ST1500 Inv  want a 24V  ROSIE Inverter
OmniCharge3024  Eu1/2/3000iGens
West Chilcotin 1680+W to come

alyaz

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

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.
Grid-Assist Off-Grid
REC TwinPeak 2 285W 3S-3P 2565w-STC 1926w-NMOT Array / Classic 150 / Conext SW 4024 Inverter
Trojan L16H-AC 435Ah bank 4S  with 7' of 4/0 cable
24 volt system /  Need 3200Whs Daily
My System Install

boB


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
K7IQ 🌛  He/She/Me

alyaz

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.

alyaz

When in the Classic ‘end amps’ menu....

I have my end amps set at 12a... what setting is reasonable for the ‘rebulk' setting?  My float parameter setting is 27v.

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.

Vic

Hi Al,

As you know,  Rebulk starts a new charge cycle on a given day.   Folks with reasonable battery Capacity,    often do not wish to use Rebulk,   as,  every charge cycle takes its toll on battery longevity.

I do not know anyone that uses Rebulk.   In special situations it can make sense.

All,   IMO,   FWIW,   Vic
Off Grid - Sys 1: 2ea SW+ 5548, Surrette 4KS25 1280 AH, 5.25 KW PV, Classic 150,WB, Beta Barcelona, Beta KID
Sys 2: SW+ 5548s, 4KS25s, 5.88 KW PV, 2 ea. Classic 150, WB, HB CC-needs remote Monitoring/Control, site=remote.
 MN Bkrs/Bxs/Combiners. Thanks MN for Great Products/Svc/Support&This Forum!!

alyaz

Thanks Vic.

No, I did not know that.   ::)

So just leave it at the default setting then I guess?

Thanks much.
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.

Vic

Hi Al,

Yep,   unless you feel the need for Rebulk,  would just leave at 8V,   which disables if ...   IMO,   Vic
Off Grid - Sys 1: 2ea SW+ 5548, Surrette 4KS25 1280 AH, 5.25 KW PV, Classic 150,WB, Beta Barcelona, Beta KID
Sys 2: SW+ 5548s, 4KS25s, 5.88 KW PV, 2 ea. Classic 150, WB, HB CC-needs remote Monitoring/Control, site=remote.
 MN Bkrs/Bxs/Combiners. Thanks MN for Great Products/Svc/Support&This Forum!!