What is the expected shelf life of these batteries when charged/ not charged?
2043392
ask the manufacturer, so far is working great. I think I got it over a year ago.
127230
What is the shelf life of this battery unit if I plan to keep it as a back up battery?
152589
No, they're not rechargeable. But in any case, don't buy from this company. They state that the shelf life is ten years, but the batteries they ship have a shelf life of less than seven years according to the expiration date on the batteries. I returned and bought them again from what I thought was another company. It wasn't. They keep changing names. Check to see if the trade name you're buying from is actually Medical Supply Depot. FYI, I sent a "Contact Seller" query to one of their names, True Gifts, weeks ago. Never heard from them. (Today they're selling under the name true great deals.) No, they're not rechargeable. But in any case, don't buy from this company. They state that the shelf life is ten years, but the batteries they ship have a shelf life of less than seven years according to the expiration date on the batteries. I returned and bought them again from what I thought was another company. It wasn't. They keep changing names. Check to see if the trade name you're buying from is actually Medical Supply Depot. FYI, I sent a "Contact Seller" query to one of their names, True Gifts, weeks ago. Never heard from them. (Today they're selling under the name true... » Read More No, they're not rechargeable. But in any case, don't buy from this company. They state that the shelf life is ten years, but the batteries they ship have a shelf life of less than seven years according to the expiration date on the batteries. I returned and bought them again from what I thought was another company. It wasn't. They keep changing names. Check to see if the trade name you're buying from is actually Medical Supply Depot. FYI, I sent a "Contact Seller" query to one of their names, True Gifts, weeks ago. Never heard from them. (Today they're selling under the name true great deals.) « Show Less
81613
The shelf life (time it can sit without being charged) is 6 months. If the battery will not be installed in an alarm system or UPS battery back-up (or any other device that trickle charges), then it should be top charged every 6 months to avoid permanent damage to the batteries. If it is installed in a security system or battery backup, these devices automatically keep the battery charged so it does not need to be maintained. The batteries we ship are fresh date codes and fresh from the manufacturer. Best Regards,Battery Supersite
882249
We have never had issues with the batteries in the past and these have worked well. I can't even give a time frame on the batteries for these but if you shop on Ebay or Amazon you can usually find better prices. Sorry no battery problems so far.
443067
In my experience, if you put them away fully charged, I came back over a month later and they still had a full charge. I always leave the charging battery in the charger for a few extra hours after the charged LED turns green. Seems to work well for me...
225347
I am not sure the shelf life all raped up I would not trust to be more then 6 months. I know they don't last longh after you install them even if you don't print anyting.
1997298
Good question, the response to which says don't buy from this vendor: Their product description talks about a ten-year shelf life, but the batteries are stamped with expiration dates that are years short of that. An Amazon message to the vendor got no response.
1386078
Not a expert but my experience w/ similar type emergency lighting batteries is 2-4 yrs. They actually would last longer if receiving a discharge/charge every 3-6 months. Probably why people report these go bad after 3-4 yrs because they rarely get discharged/charged. If you do buy a spare keep it in a cool place and that will help the shelf life.
2075837
The ones I just received (March 2014) were dated with EXP DATE 06/2016. Just like the last set I ordered, they have at least two years on them, which is pretty good for Silver Oxide batteries (2-3 year shelf-life)
2141781
The ones I have are quite comparable. Also, just so you know... I've been told that these batteries have a 24 month warranty on them... so if you have any issues you could contact the company as well for a replacement or something.
826333
I bought them a couple of months ago. I don't see a date anywhere on them but there is a stamped number of "43" on the battery. All the batteries were fully charged and I did not have any defective ones. I have bought the same batteries before from these people with no regrets.
2031264
They have a shelf life about about 4-5 years. Batteries deteriate over time so when you purchase them you should buy enough to be used in a timely manor.I hope this answers your question.
1997297
It's actually a question of economics. I bought 24 dated MAR 2021 which leaves only 5 more years of guaranteed life. The box was shelf worn. I was a bit disappointed but I will keep them. They were approximately $2.00 cheaper than other vendors with the same batteries with 7 years of guaranteed life. It's your decision of which to purchase.
1382196
Most likely the manufactured date since I don't think they would accurately be able to predict the exact expiration date of the battery. I think shelf life is about 10 years
727575
I'm not a vendor; I'm also a customer. Sorry I can't tell you what the expiration date was as I discarded the packing. If you store unused batteries in a zip-locked plastic bag in a refrigerator, they won't "leak" their charge.
164219
my pack has an expiration date of March 2021 printed on every battery - should be good to go for longterm storage - around here my kids will use them up long before then lol