Exist Olight Javelot Pro or Olight Javelot Turbo, they have built-in and already matched batteries, they are charged only from usb charging, quite convenient, no need to think, except in the case if do not use it for long enough, when there is a need fast to change dead batteries.
There is a more difficult way - give him a dual-fuel flashlight like Streamlight ProTac HL5-X or Malkoff Hound Dog Super. This is not a thrower, for an average distance of 20-40m, but there is enough light, enough to surprise a few people. And give him primary batteries. Then it will be possible to find out in practice how he uses it, if rarely, then the primary will be enough. If he uses it frequently, the primary batteries will drain his wallet and he will naturally think about rechargeable batteries. And then he himself or with the help will figure out the safety of use and correct charging. But that's just my guess.
https://www.youtube.com/watch?v=-Qz0gkPgMEk
https://www.youtube.com/watch?v=7Sd8KqW0owc
By the way, in what area does he live, i.e. how much free space around on average to estimate how long it needs a beam to cover the main places of residence?
There is a more difficult way - give him a dual-fuel flashlight like Streamlight ProTac HL5-X or Malkoff Hound Dog Super. This is not a thrower, for an average distance of 20-40m, but there is enough light, enough to surprise a few people. And give him primary batteries. Then it will be possible to find out in practice how he uses it, if rarely, then the primary will be enough. If he uses it frequently, the primary batteries will drain his wallet and he will naturally think about rechargeable batteries. And then he himself or with the help will figure out the safety of use and correct charging. But that's just my guess.
https://www.youtube.com/watch?v=-Qz0gkPgMEk
https://www.youtube.com/watch?v=7Sd8KqW0owc
By the way, in what area does he live, i.e. how much free space around on average to estimate how long it needs a beam to cover the main places of residence?
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