The charger and batteries that replace the Sony NP-FZ100 are great, and cost half as much. They fit my camera like an OEM battery and work really well. I can't imagine paying full price for a Sony battery. There's no noticeable difference.

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.

Bought this for my alpha 7iv, have used the batteries without problem. Charges from empty to full takes around 2.5hr. Great to be able to charge two batteries at the same time. Batteries are slightly less long lasting than the Sony original but I would say they are 70%. For the price, I can't complaint.

Very good charger, it's excellent and fast charging I recommend it

I always purchase battery chargers for my cameras and I often will pay the premium for a OEM product , but this unit was worth the risk, it charges fairly fast and the batteries are recognized by the camera.

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.

Awesome product, Charges fast, really light weight, was a blessing received it the next day in time for my shoot and lasts if not as long pretty close to the original Sony battery. Overall really really happy

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.

Two batteries for this price seems to me a great option. I have used them and I wouldn't know if there is any difference from the original. It also includes the charger, which is very useful to be able to recharge two batteries at once. Very happy with the purchase. Delivery was made on the indicated date and without any incident.

Works great. Charges quickly and also no issues with charging the original sony camera. No noticable difference in battery life between the original battery and these after a couple months of use.

Only downside is it's usb with no wall brick so have one handy for it.