DIY Flashlight Power Bank

I’ve been looking around at quite afew so called “power bank” chargers since i read this thread and replied, and i have to say that this
3* 18650 batteries with 2* USBs to Charge different Mobile Devices with an XM-L2 emiter and Side-Switch
is the one i’ve bought after reading alot, simply because it can charge 1 singular, or 2, or 3 batts or all at once balance charge 3 of them. The left usb port can give out alternating amps to charge an iphone or ipad which need 1A and 2A to charge. And the fact it can do that probably means alot of other things can either be charged or even powered by this FL (Maybe?, I’ll have to test that theory out when i get it).

LOL, i was posting what i bought as you were replying.

:bigsmile:

KD sell cheaper than IOS
USB Flashlight
maybe we should start a group buy :wink:

Awwww bugger, that is quite abit cheaper by $15, well nevermind. I’ve bought afew other things from them before anyway and had them fedex’d and they usually get here in less than 2 weeks, so i’m ok with the price.

@StyXSIS

can’t wait for your impression about this light :slight_smile:
depend on that maybe i’ll take one too

wow… the different is XML2 and XML U2 is $15 ?!? :stuck_out_tongue:

Nice. Comments on the page say that it’s back ordered though, so I guess I’m going to be waiting a while.

I think there must be better ways to charge your phone, and certainly better flashlights for $14. Seriously, if you want an emergency power source for your phone it’s easier to carry a USB cable and 1 watt PS than the light you linked. If the power goes out for any non-trivial length of time a single 18650 is not going to help your phone significantly given the horrible efficiency of one battery charging another. OTOH if you’re just looking for a cute little kit to put together, than have at it! :bigsmile:

By current I think you mean Voltage.

From your link - Output: 5.3V (1% Error), 800mA

@photon1k
i have 4 x18650 PS and that is too big for me to carry around :expressionless:

@fartybum
yeah sorry i just want to make sure about is that really 800mA or not,because i need at least 1A :slight_smile:

Yeah, I wouldn’t want to carry that either. That’s why I suggested a USB cable and a 1W wall wart, unless you spend a lot of time off the grid. But even then you could power the charger from your car.

working night shift sometimes i don’t have much time to charge my phone so i need a small but enough current power bank to charge my phone 2 or 3 times ,android phone really power hog even at minimum setting :stuck_out_tongue:

i cant find a way to choose different led on kaidomain. On the other site its clearly that you have options:

  • Cool White - XM-L2 U2 1C
  • Neutral White - XM-L2 T4 5B1 (80CRI Min.)
  • Neutral White - XM-L2 T6 3A ( +$1.99 )

is it available at kaidomain on 40$ with neutral white?

maybe if you order at least 100 pcs they will consider adding NW tint :bigsmile:

After serious consideration …i will pass :stuck_out_tongue:

I bought a couple of power banks in the past and both of them broke down.
If your selfphone has a micro usb input you can travel and have this (1…. 2….) as a charger. You will only need to charge the torch by night and use the wire to charge your phone during day from the flashlight. it is a good option actually

My android phone was the same way when I first got it. There are several apps on the play store to monitor and control battery use. I don’t recall which ones helped me - I had to experiment, but I did manage to reduce battery consumption by about 40%. I think it varys a bit between phones because of different versions of android and apps that you’re running.

Thanks for posting this, I have been looking for a modeable charger/flashlight for days…
Sadly the star makes almost no contact to the tube, I will order one and check what can be improved.

thanks werner
as you said the star isn’t making contact to the tube,maybe you can add a brass in there?

We will see how much room there is.
Another important point is the driver and his current and if it is improvable.
I guess it will take 3 weeks until it arrives.

I am not sure what you mean with the 1A thing?
My phone has a wall charger which is stated 1A but it charges only 0.8A max and like said above with rising battery% the current decreases…
But my phone don’t charge with full current on all setups, it only enables high current charging if the datalines are shorted which can be made easily on this DIY kit.

Important is the battery capacity:
2500mAh*0.8 efficiency/1.6Ahphonecapacity=1.25. So I will be able to recharge about 125% of my phone…

Anyone kinda concerned that the directions direct the buyer to solder wires to the battery ?