Instruction: Answer the given question using the supporting document.

Input:
Question: How many amp hours do these batteries have?  I am looking for a minimum of 18mAH
Document: I ordered three Sony M Type NP-FM50-equivalent camcorder battery packs from eForcity. The package arrived quickly, but the batteries charge only to 105 to 117 minutes. They should charge to at least 200 minutes (Sony packs charge to more than 300 minutes!). I used three different chargers and three different camcorders. At less than two hours of use, these batteries are pretty much useless. Even my oldest Sony packs have more charge time than these.
I needed a replacment battery for my old camcorder and found this on amazon -very reasonable. Just what I was looking for. Works great!
The item worked perfectly. Very happy with the item because it worked perfectly. The item worked perfectly. Why do I have to type so many words?
It's perfect fit! Just arrived nearly dead so I had to wait for the charger! But that arrived 24 hours later!
I bought 2 of these to replace the 2 failing batteries I have for my Sony camera. They came already charged. They work great. The price was unbeatable.
Was concered about the battery life from the other reviews so I bought 2 of these. Have been at disney for 5 days and charged it everynight and did not run out of charge once. Was able to tape many wonderful moments os our vacation with no problems. Thank you so much! !
Ordered these non-Sony repolacement batteries from an Amazon seller. Received in just one-or two days and they are working fine so far. I think the Sony batteries may have had a slightly higher storage, but at the lower price I am satisfied.
I am an avid digital photographer and like to have afew batteries to back me up when I am on a photographyfrenzy, which can happen when I have beautiful sunsetsor sunrises or unbelievable flowers in my sights. Thebatteries I order from this vendor always arrive quicklyand in perfect condition.
The 2 battery packs I ordered along with my original battery allowed me to shoot my Sony D828 camera for hours during a baby shower. I am truly pleased with the product and the the price. These Sony type np-fm50's are a great value. I would recomend them to anyone for any purpose because they do perform as I expected.
Much less expensive than OEM. With the price of lithium batteries dropping I cannot understand why an OEM wants to sell them at a very high price. This battery is for an eight year old camera. I do not believe there is much demand for this battery model anymore - another reason why OEM's should not expcet consumers to pay $$$$$$$Low price, equivelant performance; if you need this model of battery why wouldn't you but it from a third party vendor?
Answer: My experience with this battery is that it has not held up as good as the one that came with the camera. It doesn't seem to hold a charge nearly as long as the OEM, even when not in the camera. My suggestion would be to purchase a Sony battery.