Where is that happening? I do not know of any Internal combustion engine with a charging system for lithium batteries? Lithium is 3 times the cost and need special chargers.
I am sorry about post 17. I made a mistake. Are you guys going to live or should I start a post on it? Seems to be taking over the thread. Let me know if I should start a post?
Run the best oil you can afford in that motor. Carbon build up kills them also make sure your thermostats are working. Absolutely makes an injector oil.
How many wires on your pump? If you have 4 wires, you have the updated pump. If you have 3 wires you have the original pump and you should immediately go to pre mix.
look under the stator plate, should be a tab with a threaded hole in it. You have the harness off of a larger engine. you probably don't need the purple wire.
Your gauge is probably good. You can't put oil in the cylinders then do a compression test. Wait a day for the oil to settle and re do the compression test.
That tells you your thermostats are working. Get an infared gun to double check the actual temps. The switch should be in the head itself If I remeber right. Dukedog or Fatzbullet will be much more help on that.