I just switch to the light side :)

[EA6LE-ONE]

As I started to have some of the 2V heavy AGMs batteries underperform I ordered 15 SimpliPhi and was a bit of the snag to get them on the island. My main ship forwarder decided not to receive and ship lithium batteries heavier than 5kg without telling the customers. My shipment was refused and delayed me about a week until I managed to reroute it to another ship forwarder that was still receiving lithium batteries. Had to pay a bit more but finally 3 weeks later I received them and the landed cost was about $2450 (including shipping, duty and cost for wire transfers) per battery which is not bad. The Powerstore offered a discount and was a breeze to deal with them. Last weekend I managed to install them, had to remove the 2V 350 pounds batteries and replace with the light SimpliPhi. Made my own cables and bus bars and the final result can be seen in the picture:

After watching most of the info posted here about the SimpliPhi batteries I used the following parameters for charging:

Raysun, be free and tell me if I should change anything. Yesterday was a good solar day and reach CPM just I was expected. I don't really want to charge the batteries to %100 or stress them as my needs right now are about 50% from the battery and I can go down to 40% SOC.

[raysun]

Wowie! Nothing like jumping right into the deep end! As expected - nice job on implementation.
I'm certain the integration guide was studied in depth, and the "adaptations" from standard carefully considered.
I may make one initialization suggestion: If not done during commissioning, I suggest setting the Radian chargers to the Phi-specified "full charge" parameters (56.4V @ 0.1H, 1125AH Battery Capacity and 2% Charged Return Amps). Run the charge cycle from your backup AC source (grid, generator) to "top balance" the cells, and experience the thrill of the charge current taking a full power nose-dive from some hellacious maximum to 22.5A at CPM.
Once that's accomplished, the FNDC is at "true sync", and the parameters can be readjusted to your liking. (You have lots of capacity to play with in your use case, so plenty of latitude to drive them safely while "keepin' 'em between the ditches".)
Also, I wouldn't be too concerned about charging to the Phi-spec 100% SoC. I've grown to conclude they're hedging their own bets here, and under-rating their cells to start with. That, and IME their deployed-capacity requirements are along the lines of recommending a Porsche Taycan to drive to the mailbox. In my case, I can't even put the pedal to the metal - I don't have enough r(l)oad.
My personal preference is charge to 100%, if only to give the FNDC a chance to stay reasonably in sync. However, as time goes by, I look at SoC (and battery voltage) less and less. It's just too boring.

[EA6LE-ONE]

I may make one initialization suggestion: If not done during commissioning, I suggest setting the Radian chargers to the Phi-specified "full charge" parameters (56.4V @ 0.1H, 1125AH Battery Capacity and 2% Charged Return Amps). Run the charge cycle from your backup AC source (grid, generator) to "top balance" the cells, and experience the thrill of the charge current taking a full power nose-dive from some hellacious maximum to 22.5A at CPM.
Once that's accomplished, the FNDC is at "true sync", and the parameters can be readjusted to your liking. (You have lots of capacity to play with in your use case, so plenty of latitude to drive them safely while "keepin' 'em between the ditches".)
Also, I wouldn't be too concerned about charging to the Phi-spec 100% SoC. I've grown to conclude they're hedging their own bets here, and under-rating their cells to start with. That, and IME their deployed-capacity requirements are along the lines of recommending a Porsche Taycan to drive to the mailbox. In my case, I can't even put the pedal to the metal - I don't have enough r(l)oad.
My personal preference is charge to 100%, if only to give the FNDC a chance to stay reasonably in sync. However, as time goes by, I look at SoC (and battery voltage) less and less. It's just too boring.

I did setup the radian to charge at 56V and 22.5A end amps for the first charge overnight but I had it charge at 60A and it finished the charge on the CCs as sun came up before finished the charge. because I charged them slow and it didn't reach the 56V it just went up to 55.2 as I had the FNDC set for charged voltage with 22.5A end amps. I had the float set at 53.2V, at that time, as you were using that value for float. 53.2V is not working for me as I wanted the batteries a bit more than 90% when they start to discharge. I think 53.6V is where I want to start when the sun goes down. for yesterday I changed the values to what is now and reach CPM with the amps falling quick once the voltage went over 55V. Right now, CPM should reach around 3:00pm and will stay about 1 hour and a half in float.
I had a bit of a snag when I connected the new batteries with the inverter. The grid didn’t kick in when I turn it on manually and the inverter started to discharge the batteries for about a half an hour, that was about 200w per battery, then I managed to force the inverter to connect to the grid.
This is the newest radian and is having a problem turning the grid on manually. Works with grid use timer and the work around to turn the grid on was to set mini grid connect to grid to a higher value than voltage on the battery.
Anyway, the battery seems to work fine, discharging voltage looks good and seem to perform great.

[raysun]

I had the float set at 53.2V, at that time, as you were using that value for float. 53.2V is not working for me as I wanted the batteries a bit more than 90% when they start to discharge. I think 53.6V is where I want to start when the sun goes down.

The "user defined Float" is definitely a matter of setting the voltage in accordance to typical system loads. My target is a 0.1A discharge, so just slightly biased away from 100% SoC. Typically, SoC is 98-99% at sunset.

[EA6LE-ONE]

Just got my new batteries installed.

I got 24 more batteries for my main system. I had them checked when I took them out of the box and wrote down the voltage. The batteries supposed to be discharged at 20-30% SOC for safe transportation. there were 7 batteries fully charged and that got me a bit worried. when I charged each battery, the discharged ones took between 58 and 62 amps and the charged ones only 2-3amps. once I installed the DC monitors on them I can see that the batteries that came charged are acting a bit different. when charging they are like 20-100mA lower than the ones that came discharged. it seem to be the same when discharging. Maybe after few cycles will get in line, will see.
Here are the pictures when I was charging each battery and installed in the rack.

[Mike Curran]

Do those DC monitors measure current as well as voltage? How is the current signal derived - a small shunt?