That thing is pretty sweet. Was in the market for a mobile usb charger, but that one is a little expensive for me. Decent price for what you get though
I have the Jin Heng 12A from FastTech, with 3 Trustfire 3000, springs cuted. It is normal that the back leds are allways on?
No, they should only be on if the small button that turns on the USB outputs has been pressed.
The USB switch on my Jin Heng 12A is acting up. Slight tap or shake of the USB switch will cause the battery capacity indicator to fluctuate by one or two LED lighted up or down.
Flashlight and charger do works fine but the 80 and 60 % charge indication is not reliable.
Any help on how to access to this switch is greatly appreciated.
Thanks in advance.
Updated the review with some newly discovered driver information.
Apologies for the necro but I believe this is still a relevant light and topic.
If you were going to buy one of these, what batteries would you choose?
a) A certain brand of protected 18650s (as small as possible)? What brand would that be?
b) YOLO. Buy unprotected 18650s. (Dont really want to do this due to being a gift)
c) IMRs. Less capability, but no prot circuit. Shouldnt blow up.
I am strongly considering buying one and this info would be extremely helpful. Thank you.
In case anyone cares, I bought one and did some research on 18650 sizes. I wanted to give this as a gift, which I think it is excellent for doing. So I wanted protection.
I wound up getting a 4 combo pack of Tenergy 2600mAh 18650s flat-top with protection. Not exactly the latest and greatest, but at 66mm long it fit just fine in this flashlight. A bit tight but no cutting or replacing of springs needed, which is a bonus.
Besides at 7.50 per battery, I think this is more cost effective than 3x 3100mAh EagleTac for 19 bucks each. This light is already underdriven and has tons of runtime anyways.
It was also a nice bonus to get all the batteries at once so that they will be appropriately balanced.
since someone necroed this for me, my question is this: can you swap in a qlite (or similar) driver?
Yes, it has a common 17mm driver, easy access of the led and driver, and a ton of aluminium in the head for heatsinking. I run protected Panasonics (modest 2200mAh ones) in it, to get them in I shortened the springs and they were still a tight squeeze. But since they need no removing once in, that's ok.