The solar panel is not strong enough to charge the lithium battery. I maybe get 2 or 3 pictures a day from the charge provided and then the battery is dead again. Disappointed.
The new lithium cartridge’s are complete junk! I just replaced a cartridge two days ago and it’s already down to 57%. Even with the tactacam solar panel with full charge on a new cartridge lasted about a month! I could get at least three months easy out of AA lithium batteries and even longer with the solar panel.
The cartridge is finally working but the process is not easy for non tecky folks. Very difficult to locate:purchase the 5v, 1 ah charging block. 5 stores did not have it! Found one at a rural shop that still had it. All ok but removing the battery pack and inserting the rechargeable one was very difficult. Had to get help because eject button doesn’t work well. Finally set up and again after days of trial and error, finally getting good photos.
I am pleased how long the battery left before needing a recharge of course it depends on how active the camera is. One of my original batteries died after approximately 2 years.
I love lithium cartridge, instead of constantly changing batteries. Install it and forget it. Paired with the solar panel I can basically forget it and enjoy using it.