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

Input:
Question: Hi, do you know if the wall charger is for 220v?
Document: Needed another battery for my GoPro. Instead I get two batteries and a wall charger. Can't beat that. Any time you buy something that uses a rechargeable battery, it is always better to have a spare. You never know when you will need the extra power. This fit the purpose and at a great price.
Ok so this was a great addition to my gopro camera. Came in very handy when the factory battery died on me while shooting. So it's always good to have extra batteries on hand. The fact that the wall charger also doubles as car charger is a plus. However the indicating charger light doesn't seem to function properly. I plugged in one of my dead batteries and the light was green, indicating that the battery was fully charged when I know it was dead.
This unit provided 2 good backup batteries for my GoPro camera and allows me to charge all of my GoPro batteries on the wall or in a car. I have read that they are not as solid in the camera and may &#34;rattle&#34;. I have not found this to be the case ,but I only use mine during very low-impact activities. I have not used mine until it was drained so I don't know how the battery life compares to the stock GoPro batteries.
I don't know if it is the batteries or the charger causing the problem. But it is going back. Sherry:(
YOU NEED THIS...ya just may not know it yet.The batteries work. I read all the poo-poo and it just doesn't make sense.I have been using the charger and batteries for over a year now.
Received these today. Of course, the first thing we did was plug in the charger and insert one of the batteries. This was pretty straight forward, which is a good thing because there are no instructions. Instructions should not be necessary with something this simple. But it would be a good idea to know what the light on the charger does - if anything. The word "Charge" appears next to the light.
At least initially they indicated a full charge. We'll know better when we try to use them on a ride tomorrow.24 Jun update - I had a senior moment. There are charging instructions on the charger - raised print on one side. As it turned out, we had a defective charger - the light did not come on at all. Should be red when charging, green when fully charged. So we returned it, no harm no foul.
This is where it gets interesting. Since my son placed the order, he received an email from the company owner "Mark". I have never - ever - read an email like it or experienced such a thoroughly genuine concern about product reliability and customer satisfaction. Mark asked if he could call to personally do whatever he could to ensure our satisfaction with his company and the product. To be clear, we were not at all unhappy. We know EVERY charger can't be perfect.
Like others have noted in their reviews, these batteries actually fit a bit better than the GOPRO batteries themselves fit, and last longer. Super happy with this purchase. The charger is handy so you can charge batteries while using the GOPRO's. Works out great for being able to swap out batteries for longer shooting sessions. I liked the kit so much I ordered one for my Canon T3i also. Let you know how that turns out when I get it!
This is a gift so I really don't know anything about it. It did come in plenty of time for the holidays.
Answer: On the body of the charger, it says "Input: 100V-240V 50/60HZ".  I have only used it with 110VAC, so I can't promise it will charge batteries correctly at 240VAC.  But Wasabi seems to think it will.  By the way, it worked great for me at 110V.