K&F Concept EN-EL14 Battery and Charger for Nikon EN-EL14 Battery, with Dual Charging Slot:

Pros:

Affordable
Compact and lightweight
Dual charging slots
LCD display shows battery level
Built-in protection against overcharging, over-discharging, and short circuit
Cons:

Charging time is slightly longer than the original Nikon charger
The batteries do not have a Nikon logo

Overall, I think the K&F Concept EN-EL14 Battery and Charger is a great option for people who are looking for an affordable, compact, and reliable way to charge their Nikon EN-EL14 batteries. The dual charging slots are a great feature, and the LCD display is very helpful for tracking the battery level. The built-in protection is also a nice touch, as it helps to extend the life of the batteries.

Here is a more detailed look at the pros and cons:

Affordable: The K&F Concept EN-EL14 Battery and Charger is very affordable, especially when compared to the original Nikon charger.

Compact and lightweight: The charger is very compact and lightweight, making it easy to carry with you on the go.

Dual charging slots: The charger has two charging slots, which allows you to charge two batteries at the same time.

LCD display: The charger has an LCD display that shows the battery level of each battery. This is very helpful for tracking the battery level and knowing when it's time to charge the batteries.

Built-in protection: The charger has built-in protection against overcharging, over-discharging, and short circuit. This helps to extend the life of the batteries.

Cons:

Charging time is slightly longer than the original Nikon charger: The K&F Concept EN-EL14 Battery and Charger takes about 2 hours to fully charge two batteries. The original Nikon charger takes about 1 hour to fully charge two batteries.

The batteries do not have a Nikon logo: The batteries that come with the K&F Concept EN-EL14 Battery and Charger do not have a Nikon logo. This may be a concern for some people, but it does not affect the performance of the batteries.

Overall, I think the K&F Concept EN-EL14 Battery and Charger is a great option for people who are looking for an affordable, compact, and reliable way to charge their Nikon EN-EL14 batteries. The dual charging slots are a great feature, and the LCD display is very helpful for tracking the battery level. The built-in protection is also a nice touch, as it helps to extend the life of the batteries.

Got these to use with my Sony a7 and they held up great for an 8 hour wedding day doing video!

They dont throw the sony battery warning. So they work for me.

So far these batteries and charger are working properly and keeping my Sony A7 III powered up. I haven't noticed an issue with battery life yet, but its only be a few weeks.

One of the problems of being a photographer is the cost associated with most gear. I already sink tons of money into lenses and bodies, so I really would like to get a break on the other stuff where I can. I opted to get these batteries instead of the Sony version because the price was MUCH lower. They came charged to about 60-70%, and I popped them in the charger to get them to 100%. As normal, my A7R5 pops up a warning that 'this isn't a recognized battery', but they work great anyway. The A7R5 is a battery hog as it is, so I needed to have at least 4 extra batteries for Weddings and long sessions. These work great, and for the price, I can get more sets and have 8-10 spare batteries with me on any shoot. Doesn't seem to make sense to me to buy the official name brand batteries. One thing I did note, when you plug an official Sony battery into this charger, the charger indicator doesn't function. But if you leave it in there for a while, I do overnight, it's always 100% the next day. So, value for money, these are great.

I am always looking for extra batteries for my camera. I saw these on vine and had to order them. The batteries work great in my camera but the real star of the show is the charger. It seems to charge 2 batteries faster them my previous charger so that is a bonus. It also gives me an extra charger so I can charge 4 batteries at once. I am very happy with this order so I give it 5 Stars.

Nothing negative to say about this charger. I should have gotten this kit instead of buying extra OEM batteries which were expensive. Was looking for something like this so I could have spare batteries always fully charged. I’m using it with my Sony Alpha 7IV. Both the charger itself and the included batteries work as expected. The camera knows no difference and works the same on either. I did not see any warnings about using third party batteries. The charger can charge two at a time and can accept either a microUSB or USB-C input. I took this charger with me on two separate trips this summer and it did not let me down as I took over 1000 photos on one trip over 9 days. I didn’t time or take note of the battery life but I didn’t notice any substantial difference between these batteries and the official ones from Sony. With a total of four batteries in my travel bag I always had enough to last throughout the day.

So far the charging and the battery life both are well. The future will tell if that stays true. I like that I can now charge two batteries instead of one and always have my camera ready to go for awesome shots.

The battery in some 10-20 charge cycles in a short time remains intact regardless of whether I leave it charging for a long time, even recording at 4k the battery lasts a good time, this product is in my cart again for the quality it has with respect to the original Sony batteries, one of the best options for replacement batteries

This K&F Concept NP-FZ100 Battery and Dual Slot Charger Set works as described. It comes packed compact with everything it's suppost to. So far battery life is acceptable but I'm noticing a slight drop in life every recharge. Will have to test more to see if the longevity last but for now it's good and takes up little space.