Chris, I’ve decided not to use the original cells. I have plenty of Samsung Q30’s, so I’ll be using those. It’s better to be safe than sorry. I’ll be using this fan on an Anker USB Power Supply most of the time. The batteries will come on handy when I’m not around house power such as camping, etc.
Trust buy verify. They could be quality cells, or they could be re-wrapped laptop pulls, lol.
Quality cells are so cheap that it just makes more sense…but confirm what the internal charging module does. That’s just as important.
Chris
Chris, I’m on top of it. I’m very careful when it comes to these cells. I never leave them alone when I’m charging. I always charge on fireproof surfaces, and I have a fire extinguishers just in case.
I think Chris was referring to testing the capabilities of the fan’s built-in charger.
I will check that out too.
For the 7.5” version, runtime on high is listed as 5 hours. If that’s based on 2x2200mAh cells, then that would translate to about 880mA current draw, give or take.
But your point is still valid - any 18650 cells can handle this.
FYI, protected cells will not fit in this fan. I am currently running down one cell in it to find out at what voltage it stops as I was not able to get an answer if there is any kind of LVP built in.
There are a lot of variables there, that are unknown and these are cheap ChiCom fans, so who really knows what’s what?
My reference is only my two O2 Cool fans and both have 500mA vdc stamped on the barrel input, so they want a wall wart capable of supplying 500mA at 12vdc, so 6w for power consumption, for the HIGH setting? It’s a 10” diameter blade, so I doubt that these ComLife fans are drawing more, but that’s just a guess.
Anyhow, I was talking about verifying the internal charging module to make sure it’s charging in spec…
Chris
Some assorted info regarding my 9” COMLIFE fan:
- Actual name on the box (and on the cells) is LILENG
- Model number: 836
- Power consumption: 3.5W (per included documentation)
- Current draw when running on battery: 0.48A (low) / 1.1A (high)
- Current draw when running on USB cable: 0.6A (high)
- Current draw when charging via USB: 0.7A
- When running on battery, the fan starts cutting out at around 3.33V, and then slowly agonizes with frequent on and off for about 5-10 mins until voltage drops to about 3.3V, at which point the fan stops
- Supplied cell capacity (tested on Lii-500): 1422 / 1426 mAh
All in all, nice little fan, minus the junk cells.
FYI, I’m missing the water bottle that was indicated in the Packing List. I’m sure it was a good one! 
Hi folks,
If you want an amazing twin cell 7.5 inch 18650 desk fan (wired parallel) this is the one to get linked below. I’ve purchased numerous fans, including the O2 Cool brand, but this one
blows them all way. Never needed it on HIGH fan power, and both my wife and I sleep like babies on the LOW fan setting. Pushes lot of air and the LED night light is far superior to all the rest.
We originally purchased one unit from Amazon, but when we saw how great they are, over the last few weeks, we now own 3 of them. On LOW fan power, lasts well past 8 hours of sleep.
The unit comes with two 18650 cells labeled as DP brand in a light green wrapper. I don’t know what Chinese brand they are, but one of my emergency power banks contain the same 18650’s, only 27 of them. They appear to be great cells and hold a 4.20 charge perfectly.
Last year I ordered three of These and added a 5K potentiometer to the back of the housing of the fans.
I bought them for camping, but we now use them at home as well. The kids love it.
Works great, analog speed setting, cheap, works on both battery pack or usb charger and not noisy.
Will it fit protected cells?
Hi Jordan,
It fits all types of my 18650 cells, protected or not. Also fit the slightly longer Keepower 3400mAh button tops. It should also be noted I’ve tested the fans low voltage protection using non-protected cells. The
internal protection shuts down the fan under load at about 3.0v or slightly higher volts. It can also be connected to any power bank to operate the fan with external power source. Can also be used with only one cell due to the parallel battery configuration. Naturally run time will only be half as much with one cell.
So, guys, which one would you recommend?
This one:
Or this one:
The second one looks way better, has more speed control, and even has a timer! But looks smaller and probably pushes less air.
Which one would be best?
BlueSwordM, these are the identical but branded lights on Amazon. The Q&A and reviews may help in your decision, as well as what anybody contributes here.
Thank you. The one with a timer is 6 inch, and the other 9 inch.
I wanted to know the diameter of the 1st one.
Both look great, but I’m going to go with the smaller one. It looks way better, and has a timer.
I just discovered my 7.5” Comlife fan was only charging/running on one battery. I removed the back cover and discovered one of the tabs on the positive end wasn’t soldered to the circuit board. It’s now fixed.
Thank you for the detailed response! I order one.
Hi Glenn, let us know how you like the fan. I’m curious if there are any vibration noise that come from the wire metal grill. Also, does it seem stable on a table or does it tend to want to “walk” from any vibration. Thanks buddy!
Hi Richie, I’m liking it a lot. The grill is solid and doesn’t make any noise. There is very little vibration coupled with the hard rubber feet the fan doesn’t walk. My only 2 complaints are the feet need to be glued in place, otherwise they easily slide around on the wire frame. Plus the fact I had to solder a connection they forgot to from the battery holder to the circuit board.
Glenn
Good eye to have caught that one cell holder wasn’t soldered. I’ve put the fan in my Amazon favorites for future reference. Thank you Glenn.