Found this:
11LM is the original version that runs zigbee 1.2 only
12LM is the T1 iteration that runs zigbee 3.0 similar to all the newer releases
13LM is the P1 version that looks different (like a cigar) and uses a different battery to allow for five year cycles between battery changes
14LM is the E1 revision of the original (which is also the one that runs into region locking and may only pair on specific region hubs)
In the meantime, I managed to get the battery values in HA by removing completely (HA + Z2M) and adding again.