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

Input:
Question: What is date on battery?  Thanks very much.
Document: I needed 10 of these 3-volt batteries to power an AED machine for a dental office. This 12 pack fit the bill. When they arrived, I tested the batteries to make sure that they were all fully charged. They registered as a new battery should. The expiration date was several years from purchase date, which I liked. But, the best part is that they were at such a reasonable price. Thanks, Amazon!
The battery size required for our security system. Much more expensive to purchase individual units locally. Bulk purchase was cheaper and have exceeded the life of the original batteries.
I work as a Firefighter/Paramedic and we use Duracell Procell batteries in our flashlights at work. They last much longer then any other brand battery out there. Now that I have found them for a decent price here, I can get them for my devices at home.
Came with a expiration date 8 years from now, and in a proper retail package. They have worked perfectly in my new Fenix E15. I can't comment on runtime, as I haven't used them long enough. But the first battery is lasting longer than I expected.
After searching for these lithium ion batteries on amazon, I was a bit nervous because of the reviews on other listed items arriving in plastic bags without original packaging. These looked legit and had good reviews. I can attest that the batteries came in a Duracell box, and have an expiration date of 2020. I ordered for our home security system because our local battery store did not have them in stock - go figure - except to purchase one battery for like $7! This was definitely a good deal.
Thanks, Amazon ! !
These batteries did not work as well as the PROCELL  siza AA, & AAA. I was compensated for the trouble. Service was good, batteries not as good. Thanks  Chuck
Good price, good product and fast shipping - what more could you ask for? The bulk pack is so much more economical than purchasing individually.
Bada Bing. Thank you very much, I'm here all week..Just remember to warm them up before use if they are kept below room temp, or they will not play nice. Just a factor of their lithium chemistry.
Just received and try to use (4) of these batteries. They were weak and died within one week. Don't want to wait and try the rest since 4 out of 12 are DOA. Returned item. Thanks for Amazon Prime.
Answer: The expiration dates on mine are March 2021...so far have not had trouble with them & are being used in wireless alarm units.