TaoTronics 12" Rechargeable Floor Fan

I only ran it down to the red light; was still running when I unplugged it; the first time I ran it on variable speeds; the 2nd time on low; there was no noticeable change in speed.
At the 2nd test I let it run for about 5 min on the red light; it was still running when I unplugged it.(turned it off,not unplugged) :person_facepalming:

Ordered a fan from Taotronics on the 18th, received a shipping notification on the 21st, and just received a large empty Amazon box from UPS. I picked it up as soon as the driver put it next to my door, realized it was empty, told him so, cut the packing tape and showed him there was nothing in the box (just a bit of brown packing paper).

Driver took the box back, marked it as “Rejected”. I just left a contact message for Taotronics requesting an immediate refund. Not going to give them a second chance. Glad to hear some of you actually received your fans. Amazing that someone actually thought they could get away with shipping an empty box.

I ordered three fans.

Today, I received one of them.

One is scheduled to show up tomorrow.

The third one hasn't shipped yet.

I received a full refund from Taotronics less than 12 hours after making them aware of the problem. Their response was “It appears that Amazon shipped an empty box by mistake.”

Really wanted the fan, but at least the customer service was good.

I received my fan yesterday. Wish my second orders didn’t canceled. My fault for was indecisive in pulling trigger on multiple units at that price.

mine was cancelled :frowning:

edit:

I just got a fan in the mail, addressed to just my first name. Thanks for the free fan. Couldn’t get it to run on battery even after charging for 10 minutes. Maybe it will take a charge overnight.

Wow……with $20 oopses and then free fans it might be hard for them to stay in business! lol.

Battery isn't taking a charge after 1 hour. See no battery indicator when unplugged no flashing when plugged in. Disassembled the unit. On the motherboard plugged the dc-in connector to the battery terminal and turned it on, verified that works so ruling out motherboard issue.

Guessing one of the batteries of the bunch is dead and its not giving enough juice. Reading 18.6 on multimeter where red/blue wire connector is on the battery. Removed battery cover. Here's some pictures. It is 7 cells total. 4 + 3.

My experience ends here, please advise what a good next step is toward the goal of getting battery power working.

I got my two other fans today, for a total of three.

My order is complete.

I'm charging one of the fans right now.

(You have to charge them for four hours before you use them.)

Thank you, tammap, for the heads up on this deal.

I got to test my fans this afternoon when my grid power went out. My fans worked flawlessly for two hours until power was restored.

I am very pleased with my fans.

IIRC it read 13.4 on the board bat points, I’ll doublecheck later. I did plug the ac plug into bat plug and that worked fine. Here’s a bunch of photos. Any idea how to disassemble such a pack? I’ve solder and a rework station to work with but am weary of giving more than a short heat blast to the battery (which didn’t have effect).









This fan was free so that’s why I am bothering to do this. I’ve tested each cell and have the following values:

As my values are different than the numbers you propose and I am a noob I will explain that the way I got these values was by touching the black poker to the p- and the red poker to the B+, and later I stuck it underneath the cover to touch the battery directly as there’s only 6 points on the board but 7 batteries.

I presume I need to get the 04.4 battery charged and the rest will start working. But also I’m a noob and maybe that’s how it goes because of its position in the chain. I also and am not certain if the battery needs to be disconnected from the pack to be charged/conditioned or if that can be done by connecting leads directly to its ends.

Thanks for bearing with me I know I should learn this stuff and avoid a headache but until I do to keep things moving your assistance is appreciated.

Please enjoy your time here, lightsout!

That looks like three cells are overcharged and four cells are completely dead. All cells are definitely not recoverable and should be disposed safely.

Meanwhile the photo got updated. Please dispose the battery at a proper recycling station. It would be too dangerous trying to repair the battery pack for someone without the required knowledge.

So I’ve revived a few battery packs which have a BMS, and in my case the cells were severely discharged, but there wasn’t any single cell that was bad. Simply charging the entire pack slowly was sufficient to revive the pack.

The voltage values you have posted are not useful, because the BMS appears to be interfering with the readings, and they don’t really make sense.

I have found though that most BMS have a B+ and B- that complete a circuit with the battery, and if you can tap into those terminals, you can trickle charge the battery pack with the right charger. I have a few RC lipo chargers that are practical for this purpose, since they allow precise control of the amps and voltage.

Now based upon the picture of the BMS, I have an idea on where you would have to connect the charging leads, but without the right charger I’m not sure if it is a good idea.

Apologies I’m newbie with multimeter. I looked up how to do it correctly. Here are the correct values:

Think a car battery trickle charger could do the trick at 2amp?

ABSOLUTELY NOT!!!

You seem to have completely ignored or misunderstood the replies that I and others have given you. Please take the battery pack to a local recycling center and dispose of it responsibly. I removed my prior post, since your actions might prove dangerous to yourself and others around you.

When I asked a very specific question I did not ask you to write what you imagine about me nor to coerce me into destroying my property. If you’re going to spend the time to write three sentences following the answer make them worthwhile and elaborate on the answer or explain a concept instead of going where you don’t belong.

Anyway…

I disassembled the pack. Tack welds came off easy with pliers. Wrapping paper left a bunch of adhesive which it came off with wd40 and 99% alcohol. After placing the batteries in an Xtar VC8 it was immediately clear that one bad battery was the culprit.


I’m going to reassemble the pack with a non bad battery.

Question: I don’t have a tack weld machine nor those little metal strips, will I face issue using sufficiently thick copper wire with solder in the same layout?

You don’t need a university course to remove tape and desolder or pry connections. How ridiculous.