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

Input:
Question: Does this charge Lenovo V570 Laptop?
Document: Previous adapter for my wife's Lenovo failed after roughly 1.5 years. The cord running from the brick to the laptop gets twisted up so badly that the wires inside the jacket somehow deteriorate. Lenovo wanted to charge me nearly $80 for a part that should have been under warranty. Rather than getting screwed by paying for an overpriced product that's going to fail in another 1.5 yrs, I decided to search Amazon. I purchased this product figuring worst-case-scenario is that I'm out $15 bucks.
It fit my laptop loosely but it still managed to charge the battery. It is a medium sized cable .
Works great, and gives great charge to the computer. Love how cheap it was. It's not as bulky as Lenovo's charger either, (or at least the one that came with my dad's laptop).
Very inexpensive and works perfectly! For an older laptop this was much more affordable than a new adapter from Lenovo.
Product arrived on time, fit my laptop, and worked immediately! Thanks to SIB for providing a quality replacement power cord for my Lenovo Y510.
Product arrived as promised and works great with my Lenovo laptop. My only complaint is that the cord is a little bit shorter than what came with my computer initially. However, it works and fixed my power problem.
It's dead Jim. Stopped working. In comparing the model numbers and label info AFTER the fact, I see that they are not the same as the original Lenovo laptop power supply. My bad for not confirming. . .
It works perfectly for my Lenovo Laptop, the only complaint I have is the cord length is not as long as I would like. But compared to the amount Lenovo wants for a replacement AC adapter this is an awesome deal!
I ordered this for an IBM-Lenovo Thinkpad 430. The item I received did not match the picture, and did not fit my laptop. I don't like losing almost $10.00 but it's not worth the hassle to return it so I'm burned with this one.
This is a great a/c adapter. Works perfectly at a fraction of the price for the name brand one. So very pleased with it, the price and how it works! If you need a replacement for your Lenovo laptop, don't hesitate. This works great for ours, fits perfectly and saved us a bundle of $$$! Very happy with this product!
Answer: Yes it will work on the Lenovo V570 laptop.  The difference in output is less than a volt which is negligible