I have been trying to figure out how long my battery is expected to last before it gives up the ghost. I emailed Lion Batteries and got the information I'm looking for, and I thought I should share.
Li-Ion batteries can be charged about 300-400 times. A discharge (usage) and recharge (charging) completes one cycle. With Li-Ion batteries, this can be done about 300-400 times. If you charge your battery every day, then you can expect to get about 300-400 days usage with the battery. If you charge it every second day, then we are talking about 600-800 days usage. This is how we approximate the usage of a Li-Ion battery.
Many times, people will replace the PDA unit before replacing the battery.
Does this sound about right to you guys?
Will
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Last edited by firestorm78583; 12-03-05 at 01:54 AM.
Li-Ion batteries also deteriorate over time, regardless of usage patterns. And the comments make no mention on the impacts of partial charging cycles etc.
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Always read stuff that will make you look good if you die in the middle of it.
Li-Ion batteries also deteriorate over time, regardless of usage patterns. And the comments make no mention on the impacts of partial charging cycles etc.
"Fluffy Information"???
The answer was a quick 30 second response in simple English to a question that is deeper than you may imagine.
The part that was not included in the posting was our comments about "memory effect" and Ni-MH and Ni-Cad batteries. If you are the scientific type, complete explanations about battery "Memory" can be found HERE .
If you are more interested in battery runtime, then look HERE
And to quote one point from this paper, it states: "Lithium-ion batteries lose capacity through cell oxidation, a process that occurs naturally during use and aging. The typical life span of lithium-ion is 2-3 years under normal use. Cool storage a 40% charge minimizes aging. An aged lithium-ion cannot be restored with cycling. Lithium-ion is found in cell phones and mobile computing." 600-800 days, as shown above, is about 2-3 years.
If you want details on how to get the most out of your batteries, then click here: BatteryUniversity.com
Perhaps I should have included all of this in my email to firestorm78583, but I though a condensed simple answer was the quickest.
I didn't mean any offense, I just meant that the answer was far from being all-inclusive. Which by your own admission it is :) I understand that it's a deep topic, that's how I knew it was a fluffy answer :)
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Always read stuff that will make you look good if you die in the middle of it.
I didn't mean any offense, I just meant that the answer was far from being all-inclusive. Which by your own admission it is :) I understand that it's a deep topic, that's how I knew it was a fluffy answer :)
No offense taken. Sorry if I came off a bit too strong. If firestorm78583 really wants detailed information, Battery University is a great place for answers. That is why we've posted a link on our site (with their permission).
The answer worked for me. I knew that I needed to replace my battery soon, as it is original equipment. I guess I've been trying to establish how long I had before it went Kaput. I really thought I would have replaced it sooner than now, but that's that.
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Member of The American Non-Sequitor Society. We don't make sense, but we do like pizza!
I think that battery life also very much depends on battery usage. If you almost fully discharge your Li-ion battery frequently before recharge, it will not last as long as someone who recharges it before it is discharged.
I have a cell phone that is about 5 years old. My habit is to put the phone in it's charger as soon as I come home. I rarely discharge the Li-ion battery, and I'm still using the original battery. It is just now starting to show a limited charge. Time to look for a new phone.
I have had my x5 for three years now on the same battery and I havent really noticed any decrease in runtime and i use it pratically everyday but I rarely ever run it all the way down to anything lower than 25%.
I bought two new batteries off ebay for 1.99 ea but havent used them yet. I just got them for spares in case something went wrong with my original. I can watch 5hrs of video on my 3yr old battery still.
> I can watch 5hrs of video on my 3yr old battery still.
I certainly can't do that, but I still get a fair amount of use out of my 3 year old battery. I've never run it down, and I charge it almost every day. It's less effeciant now, particularly since I've started listening to audible books on it, but I can still get a good 3 to 4 hours out of it. I did buy a new battery though (just arrived in the mail today) and a portable power source - just wanted to make sure that it didn't die at an inconvienant time.
If I charge a spare battery and put it in my briefcase, and then forget about it until I urgently need it 3 months later, will it still be fully charged?
If I charge a spare battery and put it in my briefcase, and then forget about it until I urgently need it 3 months later, will it still be fully charged?
No, the battery discharges normally over time. You will not have a fully charged battery but it will not be dead either. The battery may have about 60-70% charge. It depends on where the briefcase is left (hot environnment, cold environment); was the battery on the PDA; did it touch any metal while inthe case, etc.
Even if you take a battery, fully charge it, place it on a shelf in your office, it will slowly lose its charge over time.
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