Home assistant integration would be great (and I also don't care about homekit)

After a winter, I set mine in the sun during the days for 5 weeks and under a regular light every night. After 5 weeks, I got one to work (I have 3). According to the device status, after 5 weeks of charging it achieved 8% charge. For the other 2 I next plan to explore replacing the batteries ( they appear dead anyway so if I break them trying to replace the batteries I'm no worse off)

I'm not an expert here, but more information would probably help. Will it not start at all? Does it start and then abort? Have you tried reinstalling?