[LCD Display] I bought this along with two additional batteries and it works like a charm! I also use it as a quick check for the remaining charge since it doesn't require external power to do so. It gives a handy percentage remaining figure which is more than my camera can do at a glance. I haven't tried using it to charge a device using camera batteries yet nor have I really stress tested it to ensure it doesn't over charge batteries. However, it seems to be operating well so far.

[LCD Display] Perfect for the field with docks working independently of each other. Boosting off a Mophie powerbank and mega fast :) Highly recommended

[LCD Display] it is awesome! it has a cord that is built in and can charge two batteries on the road

[0.725 lb] I was looking for a charger that I can use to charge via a USB-C port, to take advantage of fast charging using a battery pack while traveling. The Jupio charged a single battery from just 3% charge left, all the way up to 100%, in 2 hours and 38 minutes. After 2 hours the battery was up to 93%, so it took the remaining 38 minutes to charge the extra 7%.

I also have a RavPower charger (no longer available) that uses a micro-USB port for the charger. The micro-USB specification limits the amount of current traveling from the battery to the charger, so it's not as fast. A similarly depleted battery took 3 hours and 20 minutes to charge in the RavPower.

When buying such chargers, pay attention to the current supplied to the battery. I couldn't find many chargers that can supply 8.4V at 1A to a battery as the Jupio does. For example the RavPower is rated at 8.4V and 0.7A, so it charges much slower. The other notable charger that seems to handle 1A is the SmallRig one, but it was not available when I got the Jupio.

Note that charging 2 batteries at the same time will limit the amount of current going to each battery to 0.8A, which means slower charging overall. I have not tried to see how long it takes to charge 2 batteries.

[LCD Display] I needed a duel battery charger, it does what it says it does. Seemed like a vvery resaonable price too! Couldn't be happier as of now.

[LCD Display] Additional USB port on side.
Not sure if you could do these in series through additional usb but that would be nice.
I do astrophotography in addition to wildlife both of which eat battery power.

[0.725 lb] Dual charger for 2 batteries. It's what I ordered and it's what I got.

[LCD Display] Quick and easy. Looking forward to using it on my trip coming up.

[1] I got this for long backpacking/thru hikes. I use it with a solar panel to charge during the day. Charges okay with full sun. Did what I needed it to do. Cool that I can also use it to charge other items, if needed.

[0.725 lb] I've use it once. I bought it to take to Africa with to speed up recharging batteries from shooting animals on all day safaris. It seemed a bit slow, but it got both batteries charged. We're on a tent safari so I'm guessing outlets and time to charge batteries might be limited as the tent camps run on generators and battery backups.