New batteries accidentally fully discharged,affects?

[mtmax]

Hi all,
Just went to the golf course for my first round of the year. My cart is stored in an unheated shed all winter (Montana), hooked to the charger. If it matters it is an '04 IQ club car, with 6 8volt batteries.

Well, when I arrived, at some point during the winter they had moved the cart to a new location and forgot to plug it back in. I get in and turn the key, and it is totally drained, dead, not even the light on the dash goes on. These were brand new batteries last year, with new 2g cables. The original batteries lasted 9 years, before I replaced them last summer.

My best guess is it was sitting like this 2-3 months, certainly long enough to have the batteries fully drain. Not much really cold weather since December (lows in the teens and twenties), and they were not frozen when I looked, but we've been getting warmer days. If I had to guess I would say they did not freeze, but obviously can't be sure. Went and told them about it, and they immediately went out and threw it on a charger, and it did show that it was charging.

I mentioned to them that it was not good for batteries to sit fully drained, and it likely affected the batteries adversely, what were they going to do about it. The answer was, we need to talk to the head pro and we will get back to you.

So, should I be concerned? Did it harm the batteries? If so how much? I realize pretty much guesswork, and I don't want to be a jerk, but I do want to be treated fairly. Maybe I should just forget it. Curious what others with more experience think.

Thanks for any replies,
Max