May 26, 20224 yr I have two identical installations with Hubble AM2 batteries connected via CAN to Sunsynk 8kw inverters. Both installations have a weird issue where they discharge to their 10% setpoint and then at random drop to 0%. At this point the inverter starts charging the battery (presumably because it thinks it's now really at 0%). The battery then jumps back to 10% and sometimes charges to 11% before the inverter stops and discharges the battery back to the 10% setpoint. This issue is only observed when at the lower SOC setpoint is reached (I've played with different values, same result). There's clearly some issue causing the BMS to drop the SOC (perhaps a comms error, but nothing in the Sunsynk logs). Has anyone seen this before? I've since updated the Sunsynk to its latest firmware (M6.0.1.4 / S1.7.2.4 / CE.4.2.4), with no change. Hubble ahs also provided a firmware upgrade but I cannot get their upgrade app to communicate via RS232 to the AM2. Tried many baud rates, addresses, swopping of Rx Tx, RS232 and TTL levels, etc. Awaiting their help. Below's a few screenshots, if it looks familiar to anyone. Ps. I do not have a RIOT/Cloudlink installed. Tertius.
May 26, 20224 yr somewhere on the forum, there is a big thread about this, cannot find the thread but sent a snippet of the thread to my installer when I saw it, I need a cloud link as well , not going to pay the installer to have the battery taken off and sent to Hubble Quote There is a batch of batteries that has a SOC and SOH Issue with the Firmware on the BMS it is not a Hardware Problem I need to Send a list of Clients to Hubble so we can Identify who has the problem. Those that have RIOT Cloudlinks send the Serial number of your cloudlink and the Serial number of you batteries that you suspect has problems to me Please note the batteries with the problems are only the ones between DEC 2021 and MAR 2022 and it is not all of them there are just a few with the Defective Frimware Version as far as we can see it seems to be one batch. Hubble Lithium Promised me that they will do everything with in reason to resolve the problems with that batch asap. Those of you that have RIOT Cloudlinks has an advantage because the battery can be tested Using the Built in Battery analyzer this will enable us to identify the problematic firmware versions faster those that does not have RIOTS well your batteries may have to be returned to Hubble for the tests..
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