I recently got one of the XHP70.2 flashlights with blue LED charge indicators that are all over Aliexpress, eBay, etc, this sort of thing. After running it for a brief amount of time on fresh batteries the charge indicator started blinking and it shut down. Tried it on a second one that a friend had got and it had the same problem. Checked the cells on a charge analyzer (MC3000) and they were at nearly full capacity, about 800mAh down, and 3.89V. Since a number of people have reported problems with battery life on these, I wonder if the real problem is that the charge sensing is faulty, it works OK with a fully charged cell but as soon as the voltage drops a bit it erroneously decides it's discharged and shuts down.