Lithium Polymer Battery Charging Voltage

With the current restrictions on shipping lithium polymer batteries, AC adapters are sorely needed for studio assignments that have larger numbers of photos that need to be people.

I immediately unpacked, plugged-in, and started testing and charging batteries when the Watson Duo arrived. Mounting a battery with the device unplugged from power, the screen reports the percent remaining charge left on the battery, and pressing Test, the measured voltage from the battery. Finally, no more balancing VOM, +/- probes and the battery to track voltage loss! Plugged-in, the charger reports the same information for each battery on the display, and indicates it's charging by the flashing top unit in the graphic battery indicator. Love it!! Wanting to change battery plates, I held the charger in my hands like playing a game played using thumbs, and pushed one of the plates towards the back of the charger, like I would with any of the plates for my eight year old Pearstone plug-in-the-wall chargers. The plate would not budge! Tried the other plate on the other side of the Duo, same thing!?!? Confustion ensued, LOL!! The manual has a minimal graphic showing installing the plate, not taking it off. So, after fiddling awhile and dismissing the use of screwdriver, it was back to thumbs pressed and squeezing hard against the corners of one of the plates, then progressively increasing the pressure applied, until it popped free! It took several similar remove of a plate from each side of the Duo using this technique the plates supplied with the Duo were easily removable. The good news is that my Pearstone plates are the same plate as the Watson plates. They fit perfectly on the Duo, and mount and dismount easily. I really like the features on this charger; the voltage/capacity display, the USB power/charging output, the car adapter input and being able to charge a different type and/or voltage batteries at the same time on this charger. Highly recommended this Watson Duo for its simplicity, quality and features. I always look for great value over the long-run, and this charger overwhelmingly fits the bill. Thanks, AGAIN, B&H!

It works wonderfully charging the lithium battery included for my A6500.  Does exactly what it is supposed to do.  What else can you say.

This lithium battery is very reliable.

The card fits perfectly in my wallet and is a tough polymer with some flex, not likely to crack. The battery feature on the key fob is an excellent upgrade also.

This manual flash has everything I need and especially like the lithium battery. just bought a second unit.

Long lasting Lithium battery makes it cost effective.

Lithium without the need to recharge. Excellent long-life battery.

I bought one, have to buy another, great sony lithium battery.

The Watson Lithium Battery is a great backup for a Nikon battery. It lasts as long and makes a great back up for a Nikon battery.