Olight's Universal Magnetic USB Charger

Let me just say up front that, unlike some of my recent flashlight reviews, this charger was purchased with my own money.

With that out of the way, let’s talk about this charger, shall we?

This is a very small, single cell charger that can handle a wide variety of cels and is powered by virtually any USB source.

According to Olight’s product page, this charger should be able to charge every LI/IMR/INR/ICR cell from the tiny 10340 all the way up to the huge 26650 and everything in-between while also being able to charge your AAAA/AAA/AA/C NiMH/NiCd batteries.

Because the charger regulates the input voltage, you can plug it into any USB power source and charge up. That versatility is pretty nice. Nice too is the fact that the charger is unconcerned which magnet goes on which end, so, while you normally shouldn’t, in this one case you can forget about positive and negative.

It has a charging current of 750 mA. Lots of serious flashlight guys feel like this is too high for the smaller cells and can explain all the math and science that leads them to fell this way. All I know is, guys whom I trust say that the charger is best suited to cells with at least 1250 mAh of capacity.

I mostly run 18650s with big mAh numbers so it isn’t an issue for me, but, please, do a little homework on your own, OK?

What is so great about this charger is, obviously, its size. It is well under an ounce and is physically very small. You could easily conceal it in the palm of your hand and use it during your magic show.

“Look, Timmy, it was behind your ear the whole time.”

This, combined with the fact that it is USB compatible, makes for a great travel or emergency charger. This would be super easy to integrate into any system.

A single bay charger is huge by comparison.

Charging time, based only on my casual observations seems longer than with the other chargers I own (Thrunite MCC-4 and Xtar VC2). I suppose I’d have to run them side by side to know for sure.

Other potential issues and considerations?

Well, the cable is quite short which makes it a challenge to come from a wall outlet and find a spot to place the cell. If your wall wart is flat on top, you can perch, as I’ve done in this picture, the cell on top of it, but it isn’t the ideal situation.

Of course a longer cord sort of defeats the compact intent of a charger like this, so…

Magnets, by their very nature, stick to a lot of stuff. Just like the magnetic tail caps found in some light can be both a blessing and a curse. Yes, they offer a fast and convenient way to attach the charger to the cell, but they will also attach themselves to lots of other things in your pockets, on your desk, and just generally out in the world.

Granted, this charger doesn’t exist with out the magnets, but for some people the aggravation of dealing with them may be a deal killer.

This can only handle a single cell at a time. Everyone is different, but if you are the sort who runs down multiple cells and then charges them all up once every month or so, then this might not be the right charger for you.

Besides being used as an emergency/backup charger, this would really be perfect for the user who only has one or two cells and wants to be able to charge up on the fly.

The charge’s MSRP is $10. That’s a fair enough price in my estimation; assuming this is something you think will work for you. On the other hand, for not much more, you can get a multi bay charger.

Like everything else, you need to really ponder your needs before deciding something is right for you.

Are you light infantry or armor?

For me personally, this charger will mainly be used as an emergency/backup/travel charger. I think it will serve me well in this roll, but I would never ant it as my only charger.

Bumping b/c the OP has been updated with the written review.

Thanks for the review. I’m enjoying mine as well.

Thanks for the review cone.

Mine came in today and I love it! I hae a little tiny Insignia power thing on my dest hat has 2 ac outlets and 2 usb ports. Likely it will live in one of those ports. One ac outlet has the Blitzwolf 2 port usb adapter in it for the higher draw chargers.

Thanks for the review. Was curious about it since the first time I saw it. Think I’m going to get one.

Great sound effects in the video, by the way.

I hope that Olight do a cheap deal with one of these for the UK/Europe.

In my view (haven’t watched the video yet, apologies if this point is covered) it is ideal for cyclists who may fancy a Li-Ion set-up but are put off by the cost of a charger.


It won’t charge a battery if it is at 4.10v or more. It takes 4.09v or less to start a charge. No big deal.

I’ve charged two GAs with it and they both ended up at 4.22v after a rest. Not great.

Pilotdog, I think we all consider you in the top tier of people when talking about flashlight knowledge. What are your thoughts on it not being particularly good for charging cells with less than, say, 1250mAh because of the 750mA input?

I got mine yesterday and a worn out 18650 I tested it with came off at 4.19v. I had a DMM connected to it while charging and it never got over 4.210v. I also had a usb current meter connected to the power supply feeding power to the Olight and the charger turned off at .09A.

You probably shouldn’t hold my opinion in such high regard when it comes to cells, I’m a bit reckless and ignorant sometimes.

But here is my opinion nonetheless. I try to charge cells at no more than 1C, or maybe 1.25C for an IMR. So I would have no problem using this on a 14500 or 18350 personally, but I’m not going to slap it on a 10440. My understanding is I would get longer cell life if I used lower charge rates, but my lights are 90% shelf queens anyways. Most of my cells only get 5-10 charge/discharge cycles in a year.

Oh, thanks. I worked on the sound effects for hours, so I really appreciate the kind words. :smiley:

Don’t be modest.

Ya, there seems to not be a consensus as to what is really the best charge rate is. There are, I guess, just too many competing goals- cell longevity, safety, efficiency, etc.- to have a one size fits all rule of thumb.