Instruction: Evaluate the answerability of a question by analyzing the related document, outputting yes if the document contains information addressing the question, and no otherwise.

Input:
Question: can the batteries be replaced??
Document: I have not had a chance to use the product as yet but upon receiving it I am please with its appearance and quality for the price. I liked that it was solar activated and did not rely on batteries for power. The shipping was easy and arrived as promised.
Granted this was a cheap helmet and all I could afford at the time. In the ten weeks of using the helmet I have put over 160 hours of welding. The batteries are considered irreplaceable,  however, with a little extra work and care it can be done. The issue I had with the helmet is the solar panel died and not the batteries. I tested to solar panel to confirm with a volt meter.
the only negative I have is the knobs that tighten for hood pivot loosen to easily with use. it is comfortable, the auto darkening is quick. plenty of room for wearing glasses underneath. I am satisfied with it.
my son uses this at school in his welding class and he comes home safe. I Thank you very much
its very sensitive and works perfectly to however you adjust it.its well made and I will recommend it to everyone
i absolutely love this mask, the only down side i have seen is when you are grinding it goes black and you have to remove it to adjust the switch to grinding mode, when you remove it from your head about 3 time or more you have to tighten the adjustment screws on either side as it runs slack. That's the reason for not giving  a 5 star. Other than that it works fantastic when you are welding!
has improved my welding projects,the adjustment on the helmet work well,the auto dark function is fast enough,the clear view plate is ok
good for the price! Just started school,worked as well as my classmates more expensive helmets,only thing I didn't like it didn't come with instructions
finally I bought a auto darkening helmet. back in the day when I first learned  to weld I used the traditional helmet. makes tack welds a breeze. very good value
does what it is supposed too and at a fair price could have used a set of directions for us dummies who have not used this type of hood
Answer: yes