2014 battery with 2016 mower?

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I just bought a 21" self propelled model, and am very happy with it (got 59 minutes of runtime on light mowing).  My question is: The mower has a manufacture date of September 2016, which seems reasonable for a 2017 purchase, but the 7.5 AH battery (which was shipped separately) has a manufacture date of Dec 2014! (Which is 2.5 years ago).

Batteries degrade both due to the number of cycles (I'll probably only be putting 2 cycles a week on it in the summer) AND due to their calendar age, so I was a little concerned about my battery already being 2.5 years old when I received it.

It sounds like EGO does a good job honoring their warranty, so I'll just go with it, but I was wondering if everybody else also had Dec 2014 batteries, or if I'm unlucky and got old stock?

Jay
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summetj

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Posted 2 years ago

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Ken, Champion

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That's odd. I'm not lucky enough to own a 7.5 Ah battery, so I don't know what the range of their manufacture dates are. The 5.0 Ah battery I received recently is definitely newer.

That said, Ego does stand by its batteries. I had a 2.0 Ah battery fail a couple of summers ago and they had a new one to me within four days.
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Blue Angel, Champion

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Official Response
When in storage mode (an automatic self-discharge after 30 days), Ego's batteries will degrade very little with age. I wouldn't worry about it, especially if you've already verified that the battery is in good health and is providing good cutting times.

You have a three year warranty beginning on the date of purchase, so if the performance degrades significantly during that time Ego will make it right.
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bloomz

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Mine's a year old now and I'm going to start timing it to make sure it's not degrading because if it is I want to be sure and replace it before 3 years is up
(Edited)
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summetj

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What manufacture date is listed on your battery?  (on mine, it's listed right after the serial number.)
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bloomz

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Mine (7.5amp) says May16 which is I believe the same month I bought it
(Edited)