IO88O li-ion Rechargeable Battery 3V 600-Mah Lithium Battery with USB Port for LED Flashlight

I love these batteries I put them on my Lumintop GT NANO,Pro with the 3xAAA tube with a dummy HyperPS cell the run time is wild! The nano can do all modes! Sadly the pro can’t do turbo as it will safety shut off on turbo don’t worry just uh twist re twist your light to fix it. Much longer MAH than a standard 10440! On the nano and pro I inserted from the rear and the dummy cell infront so it can be easier to take out. It’s in the chunky side so when putting it on the lumintop GT nano /Pro/frog insert it in the rear then when putting on the 10440 tube use it to push it in gently. I realized the 3xAAA tube has a small retaining ring which in some cases can cause the 10900/10840 to get stuck. Just gently pull it out I did it to hard and peeled one of the 10840s haha. UPDATE I gave it 3 stars cause it’s not a 10900 I received in the mail today it’s a 10800 also not 3.7 volts it’s 3.0 volts