Barking Sands
Guru
- Joined
- Dec 24, 2019
- Messages
- 1,152
- Location
- New Port Richey, Fl
- Vessel Name
- M/V Intrigue
- Vessel Make
- 1985 Tung Hwa Senator
Ben is right. On my old v1 it would show 2 of 2 online and totalized AH etc. For this battery it makes one large battery and I doubt that info will appear because its compiled and transmitted as a single battery. There is quite a bit of info in the cerbo but the one thing I dont see is the highest a lowest cell voltage. But of course that info is present in the app in much greater detail than just highest/lowest. The warnings for all these items are present. The good news is that since the battery now has OTA capabilities all changes can be uploaded in the future. BTW..in your picture, click the battery line. That will open up to additional information shown in the pics below.Thanks for replying!
Here is a response from Ben S at Panbo that I got today.
It doesn't sound to me like you've done anything wrong. The V2 batteries are designed to create a single virtual battery composed of all the batteries in a bank. In that bank, you should (but currently can't) see bank details including total capacity, highest and lowest voltage cells, temperatures, etc. There is a communication issue with the battery and that's preventing that information from making it to Venus OS. So, for now all you see is summary data for the bank like SOC, voltage, and current. To confirm, the current values measured for the battery named Epoch should reflect your entire load on the batteries, not half as it would if only one battery were communicating.
I recognize this is frustrating and I'm working with Epoch on getting these issues resolved. I believe 2.3 is the current firmware version but I'm not near a battery right now to confirm.
-Ben S.
Be sure you have DVCC on, controlling BMS set to Epoch, Battery monitor set to Epoch, set Limit max charged voltage in DVCC to 14.2. Dont be surprised if on the first few cycles you get the red light next to the dip switches and overvolt warning in the Cerbo. It usually takes 2 to 3 charge cycles to get these larger batteries cells aligned. If you get that just do a heavy discharge to clear the warning which will rest around 13.8 volts as it falls quickly.
The battery appears to have some neat features. Some I am still trying to wrap my head around. Some of the operation is SOC targeted. CCL (charge current limit) is dynamic based on conditions and SOC it appears. So if you are at say 50% SOC on your parameters page you will see max charge current limit maybe 460 amps for a pair, I cant remember. But as the battery gets charged to near full 99% SOC CCL will be pulled back until 14.2 is hit and then CCL will go to 0. Even though CCL is at 0 the battery is still fed a small current and held at 14.2 for some amount of time. Then the battery appears to have a slow draw down to around 98%. If SOC gets to 90% it appears CCL is raised and charging begins again. So on first appearance it would seem the battery should stay between 99% and 95% most of the time after a full charge cycle. But I still need to do some more testing. This is just initial observations, and it may be more dynamic that that.
One other thing that is new, and again I have to confirm this, is that when networked, with or without cerbo, the batteries appear to have active load sharing. It appears that the batteries are managed in such a way that it either targets the 415.5/460ah monitor from each battery to keep them well aligned, or its managing load sharing well enough that it held those parameters exactly the same in a 230 ah round trip down and up. As I monitored the 2 batteries in the app it would inevitably show one battery with a slightly higher current than the other, but after a few seconds this scenario would flip flop and the other battery would have a slightly higher load. The batteries would bounce back and forth the entire trip up and down discharge and charge.
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