Instruction: Answer the given question by extracting information from the supporting document.

Input:
Question: These batteries are 8.4 V but the Sony original  is Mean output: 6.8V,  Is that a problem when using the batteries with Sony DVR-CX700 camcorder?
Document: These batteries have been charged at least a dozen times now and I haven't had any trouble. In fact, they last longer than the original Sony battery. The charger charges them pretty quick and charges the original Sony battery just fine as well. I mean really, for this price why wouldn't you buy this?
I bought this to change the batteries for my Sony HDRPJ260V. The charger shipped with two batteries that I can use with the camcorder in my test they lasted nearly as long as the OEM battery.I love that the charger can be used both in a car and wall port.I gave it only 4 stars because it takes a bit of fussing to get the batteries just right in the charger.
I bought this for our church's Sony Handycam. The original battery had deteriorated to the place that it was only good for a few minutes. I charged both batteries when they arrived, and when I tried them in the camera, it showed about 4 hours of usable time available with either battery. This will be great for VBS and other outdoor activities. Batteries and charger work  perfectly with no problems. I would not hesitate to buy this companies product for other uses.
I brought myself a Sony HDR-CX220 camcorder, The battery life only lasts about 2 hrs on the best quality on the original Sony battery. I knew that I would need more.
I bought this package to have spare batteries for my Sony PJ340, and so that I can charge batteries outside my camera, thus being able to shoot video at the same time batteries are being charged. (Note:  I have discovered the batteries charge faster using this charger than when  charging them in the camera.
it was 8.4V my camcorder takes 7.2V  words words words words words words words words words words words words words
I went by the reviews here on Amazon. It seemed like an incredible deal, considering that Sony was charging more that twice as much for just one battery!My issue is with the batteries. They don't hold a charge. And I don't mean that they cannot be charged, but rather that when I charge them and then just leave them on a shelf, the batteries just discharge over time. (like a week).
I haven't used batteries in my Sony CX220 yet  but they charger up and seem to be good batteries. The battery is hard to install into charger but after you figure out how to do it no problem. If minutes are accurate and they hold up for a long time they are a great buy as they are a lot cheaper than Sony Batteries and you also get a battery charger. Time will tell.
With the Wasabi batteries, I got the 2 batteries and the charger for less than the cost of one original Sony battery.
As the title says, I couldn't be happier with the performance of these batteries and charger with our Sony camcorder.
Answer: For what it is worth, the voltage on a brand new, fully charged SONY battery is 8.27 VDC. It does show to be rated at 6.8VDC on its label. Also the Sony charger puts out 8.41 VDC. All of those measurements were with a NIST traceable high end Voltmeter.RM