Of course this won’t or shouldn’t take hours. The low current you see at this point might be the BMS doing a “rest” after a fast charge, before balancing begins. Anything over 98% SOC is considered fully charged, and you should also see it go there. The reason I say this is, I have several of these system running with Pylontech and normally it only starts reducing the charge current limit somewhere between 93% and 96% SOC. Hi I still think you have some unbalanced cells, and the only way to rectify this is to keep ESS mode to “keep batteries charged” for a period of time. What should happen to the charge current and voltage? The CCGX then tells the Multi and charge controller to switch from bulk to absorption. The moment the system switches to absorption the charging stops/slows to almost nothing.Ĭan someone please explain what exactly should happen when the system switches the multi and charge controller from bulk to absorption? I assume the Pylontech BMS communicates the SOC back to the CCGX via CAN bus. While in bulk mode, the batteries charges and there is no alarm. There is something going on when the Multiplus and charge controller switches from bulk to absorption.

This is with ESS mode set to “keep batteries charged” active. Although I no longer get the alarm, the batteries do not charge higher than 80%. It is important to note that when the battery reaches 80% the charge indicators on the charge controller and Multiplus changes from bulk to absorption. The DCL is correct because we have two US3000 modules currently hooked up. The Pylontech battery parameters at this point are as follows: The charge current being sent to the battery is still hovering around 0.1 to 0.4A. However, the two batteries’ SOC remains at 80%. I have reconfigured the system using only two out of the four batteries and I am no longer getting the alarm. The charge current being sent to the batteries is almost negligible (0.2A) therefore I assume this setting has no effect.

The High Voltage battery alarm still occured every 13 to 15 minutes. I also implemented the 10A DVCC current limitation today along with the “keep batteries charged” setting. The High Voltage battery alarm unfortunately occurred and hence the post. I switched the Multiplus to charger only mode and the intention was to get the batteries to 100% SOC using the system defaults prior to using the inverter. Prior to posting this question to the community, my objective was to allow the system to charge the batteries to 100%. Thank Stewart (Victron Community Manager) battery charging Pylontech warnings I understand that the charge controller settings are ignored and controlled by the CCGX via DVCCĭVCC is ON, Shared Voltage Sense is OFF, Shared Temperature Sense is OFF.Īny assistance to resolve this problem would be appreciated. After I started receiving the high voltage warnings, I have also tried setting Absorption on this tab down to 51V.

I have made sure that the Multiplus II Charger Tab settings for Float voltage is set to 51V and that Absorption is set to 52V after completing the ESS assistant as per documentation. I have loaded and configured the ESS assistant and configured all settings as per these two documents: The current firmware versions are as follows: Current SOC is 81%Īll the Victron components run the latest available firmware as detected via the CCGX and VictronConnect App.

Charging has now slowed to almost nothing. However, during the bulk phase, the 4 US3000 Pylontech batteries charged up to 80% without any alarm. absorption light is lit on the Multiplus ii 5000 and a status of absorption charge is indicated on the SmartSolar Charger MPPT 250/100.Īs per previous reply from Guy on a “DVCC and Pylontech Battery” community post, I understand that a Pylontech managed lithium battery does not have a bulk, absorption and float stage like a lead acid battery. This alarm pops up during the absorption phase. Pylontech battery Alarm – High voltage warnings – Voltage reading attached to each warning varies between 51.56V through 51.77V I keep getting an alarm/warning every 14 minutes via the CCGX for the following:

Victron battery monitor alrms