• Strong Practicality: Can charge for different types of DC 3.7V cylindrical lithium batteries 10440, 14500, 14650, 16340, 16650, 17650, 17670, 18350, 18490, 18500, 18650, 18700, 22650, 20700, 21700, 22700, 25500, 26650, 26700 and 1.2V NiMH/NiCD AA, AAA, A, C, SC, F6 rechargeable batteries.
  • Intelligent Charger: Has four independent charging channels, it can charge four lithium batteries at the same time. Users can choose different charging current to meet the needs of slow charge or fast charge. And the charger will display the status of each rechargeable battery when charging.
  • Safety Assurance: Comes with special charge and discharge management circuit. With multiple security protection settings, the charger can effectively prevent reverse, short circuit, overcharge, over discharge, over-current damage to the battery, which makes users using the product without any safety concern.
  • UL Certification: Our product has been tested, got safety certificate and meets the applicable published standard. The UL Mark is proof of product compliance to North American safety standards.
  • What You Get: BO4-Pro Smart Charger, Power Cord, User Manual, Warranty Card, 24 Hours Warm Service, 60 Days Free Refund, 2 Years Free Replacement, Lifetime Maintenance. Warm tips: this charger with no wall adaptor, you can use any DC 5V/2A adapter. (Different input currents will affect the actual charging current. It is recommended to charge with 5V2A.)

Works great for my flat top 18650 batteries for my mod, and chargers all other rechargeable batteries that fit,AAA,AA,C,D ECT. Had a 2 port battery charger that works great also,wanted a 4 port, all good here !!

I purchased this charger to recharge AA NiMh batteries.. I am particularly fond of its ability to change charging rates and the fact that each cell charges independently of the others I also like the status indicators for each cell.. I also very much like the fact that it's USB powered and not AC which makes it good for the car as well as camping. If I had any complaint at all it's that it would have been nice to have a small cooling fan under the batteries to extend their life.

So far, this four battery charger is great! I love the feature to change charging speeds (slow, medium & fast), plus it displays each battery's charge level while they are charging. Even though they are different sizes, I can charge two 18650 and two 20700 batteries at once. The only complaint I have is that it does not come with a wall adapter for the USB cable, but if you're like me, you have plenty of those lying around the house. For $15, this is far better than the 18650 charger I bought for $25 a year ago.

My husband brought a Smok vape with recharging batteries. The vape required 3 batteries yet the charger that he got only charges 2 at a time. It forced him 2 switch back & forth between cigarettes & the vape. Now, he can charge all the batteries while he’s asleep and stick to only vaping! My brother-in-law who also lives with us had the same problem, he brought a vape that uses 3 batteries even though the charger only works on 2. Even though his vape uses different batteries, his batteries also fit the charger. I finally have a solution to their battery charging problem & all the smokers in my house can finally quit... Thanks for a great product at an affordable price!

I really like this charger. It's the first one that I've owned that will allow you to charge individual batteries without having to do them in pairs. It's like having four chargers at once! Pros: - It will charge just about every kind of cylindrical battery that I have, from AAA to 123A to the big 18650s and more. - It will handle all of the common battery chemistries, including lithium-ion, NiCd, and Ni-MH. - You can mix and match different batteries at the same time. - It won't overcharge. - You can't hurt it by shorting the contacts or putting a battery in backwards. - Each battery has its own cool little status indicator. - You can select one of three charging currents; 500mA, 1000mA, or 2000mA. This is actually kind of misleading, because the actual charging current depends on how many batteries you are charging at once. For example, if you're charging 4 batteries they each get 500mA regardless of the setting. Cons: - It doesn't come with a power supply, you have to plug it in to a USB port, just like you do your phone. - It seemed to think that one (over-discharged) Li-Ion battery that I charged was a NiCd, I guess because the battery's voltage was below 1.2V. I removed and reinserted the battery and it was ok after that. I don't know if it would have figured out that it was a Li-Ion eventually on its own.

As of display isn't too fancy but I really like the 3 simple setting for fast, medium and slower charging. It's great for Both AA & AAA rechargeable batteries. Be cautious to safely recharging Lithium-Ion batteries at no higher than 4.2 volt, MAX.

This is a good charger. Solid, well made construction. I like that it will charge individual batts rather than just a pair. I like that you can pic a charge power/rate. I like the progress lights. I was hesitant to try a USB charger like this as I'm use to the plugin type but this works quite well and, the way we are today with USB charge sockets about everywhere, it can actually be convenient.

This is a nice battery charger. It charges my batteries quickly and it has the LCD screen so I can monitor how much longer my batteries need to charge. This charger can charge one battery individually. It has both the 12V car adapter plug and the 120V utility power adapter plug. I like it.

This charger is great! Love that it displays each battery's charge level while they are charging, very helpful! It can charge different size batteries which is also nice. Favorite thing is that it takes a USB cable instead of a wall plug in which is super helpful for on the road needs. Light weight which is also nice for travel, been using it daily for almost a month with no troubles. Great price too, very happy! I've bought several battery chargers over the years, so far this one is my favorite!

I had some batteries that for whatever reason, wouldn’t charge in my other charger. I’d plug them to charge and the lights just flashed red. Other batteries charged just fine but not these 5. So I gambled, bought this charger and plugged them in. All 5 charged just fine. Money well spent to put 5 batteries back in rotation.