EBL Universal Battery Charger Speedy Smart Lithium Charger for 3.7V Rechargeable Batteries Li-ion IMR 10440 14500 16340 18650 RCR123A Batteries

Exactly what I needed and was looking for. Have a couple special flashlight batteries that I lost the chargers that came with them. One battery in question is only about an inch or so tall while the other is almost 3in. No problems at all. This is a trickle charger so don’t expect hour. I put it on, went to bed, was fully charged in morning. Highly recommend, especially for price, quality was much higher than expected. I don’t understand what other people that complained were expecting lol diamond studded?? Great product. The only thing I have to recommend to anyone getting it, make sure your battery sits flat inside the charger. The contact on bottom is a little point and needs to sit in the middle of the flat part of the battery, oh and it’s + goes on top, - on bottom.

I bought a Sofirn SC21 flashlight a year or so ago. It is very bright and worked wonderfully well for maybe a year until the 16340 Li-ion rechargeable battery ran down, and the flashlight stopped working. The USB cable provided to charge with didn't want to work for me and I did not have a battery charger. This charger was similar price to new batteries so I took a chance at seeing if my flashlight battery was still good to recharge after sitting for so long. Once I plugged it into the charger it was only 3 - 4 hours at most before it was fully charged. This was a very good purchase.

I've converted most of my old D-cell flashlights over to LED, which makes them quite a bit brighter. I've also 3D-printed adapters to use 18650 cells (nominal voltage around 3.7V) in my flashlights. The voltage is a bit high but it works, the batteries last a long time, they're lighter, they don't leak, and I have a ton of them that I've recovered from old laptop battery packs.So now I have tough old flashlights that are fairly bright and that use rechargeable batteries. I decided to find the least expensive 18650 charger that I could to keep in my tool bag. That way I could always recharge a battery if I'm out working on something.This charger fits that role. It cost me less than $9 and is compact enough that I can throw it in a pocket in my tool bag without even thinking about it. It weighs practically nothing and I can keep a spare pair of 18650 cells in it (held in place with a rubber band or Velcro tie to keep them from going exploring). I have plenty of micro-USB cables so I can charge from a wall adapter, my car, etc. I don't recommend charging from a laptop but if you really had to I suppose you could.The charger itself feels kind of flimsy. The sliding contacts are easy to bend and the build quality is not great. But for $8 I could not care less. This charger solves a very specific problem for me and allows me to have charged flashlight batteries instead of having to run out and try to find D-cells in the middle of a project. That's a win.

Easy to use. Works as described.

Very nice design and fast charging

Wimpy charge rate for this $8 EBL 2 battery charger. This is a 700mA charger ... one cell at 700mA, two cells at 350mA. A pair of 5000 mAh 18650 Li-Ion batteries require more than 14 hours to charge.It could be worse. I recently purchased a "Generic" no-name single cell charger (with two 18650 Li-Ion batteries) for $14, but that didn't actually charge 18650 or 18500 batteries.The Yonii single-cell charger is a much better buy. It is $9, charges at 2000 mA (2 amps), and has a 25%/50%/75%/100% display. You can charge a 5000 mAh Li-Ion battery in 2.5 hours, perhaps three in an 8 hour day.If you can afford it, the /deluxe/ Keenstone 4-battery charger is $29 as I write this (2025 Mar), powers from a wall socket or a vehicle 12V adapter, and displays both 25/50/75/100 *and* cell voltage/charge/rate/time per cell. It charges all four batteries at 2A each. 2.5 hours for four 5000mAh 18650 batteries, less than an hour for four Jesspow 1600mAh 18500 batteries.I deploy 18500 Li-Ion batteries in cheap 3-AAA LED flashlights. The 18500s (18mm diameter, 50mm long) fit the same space as the original 20mm diameter, 53mm long 3-AAA plastic holder, IF you wrap around the Li-Ion battery with a cardboard business card,to keep the battery centered.I plan to purchase many of the Yonii battery chargers for friends and relatives and business customers, and their flashlight-battery-consuming children. Not this wimpy EBL.

Great charger, works very well.

I bought this charger because the reviews were mostly good and the price was hard to beat. Well, it turns out that you definitely get what you pay for with this charger. I noticed from the first day I had it that the springs that hold the battery in are VERY difficult to move, making getting the battery in extremely difficult. Not only is it crazy difficult to get the battery in, you never know when it's actually charged. The light will show green if you have the battery even a millimeter from where it should lay in the charger. It can be a low battery and show green, like it's full, even when it's not. While the spring holds the battery in place vertically, the battery will roll from side to side on the bottom, making it impossible to know when it is in the correct position. Also, this charger is incredibly slow. It will take all night and well into the next day to fully charge (and that's only when you know the battery is in correctly). I kept it thinking maybe the springs world be a little less difficult to move after using it for a while, but they're not. So now I'm past the return window, but honestly, it's not even worth asking for a refund. Do yourself a favor and buy a different brand.