So, what I hear; I f you buy an unused (new) old battery that has most likely been stored at full charge, it will probabably fail more quickly. Regardless you can't tell what you get untill you check it with "CoconutBattery", which is too late if you want a new good battery. Buy Li-Ion batteries from a high volume supplier that has a good reputation and offers a warrenty of at least 1 year but 2 is reasonable. So, is there any company, other than Apple that offers this?
On Feb 12, 6:31 am, Matt Emson <[email protected]> wrote: > nodttiurp wrote: > > Please correct me if my assumptions are wrong. > > Shelf life of Li-Ion battery is of more concern than some other > > batteries. Some bargains on new batteries may be iffy if they are old. > > No way to know. > > True. > > > There are a lot of recycled batteries being sold that are not > > identified as used or "refurbished". No way to know. > > You can probably tell by looking at the info in something like > "CoconutBattery", which will look at the charge circuit's recharge > cycles value. I don't believe it is trivial to reset this. > > > Always use your portable on external power if you can. Battery removed > > so no tests to battery are run. > > Be aware of my comment below. Also be aware that generally, oxidisation > is what kills Li-ion batteries. This is a natural chemical process and > pretty hard to ultimately stop. All Li-ion batteries will fail at some > point. > > > If you use your portable on external power, remove the battery before > > powering up. Don't leave your battery in the portable unless you are > > using the battery. > > The only issue with doing this is that storing a Li-ion battery for > prolonged periods at full (or minimal) charge will do as much damage as > regularly running on power with a fully charged battery. Store you > battery at 50 - 75% full for the least long term issues. Even then, it > might discharge over time and you should always periodically check it. > > Any time you overcharge, over discharge or remove a battery from a > laptop for perlonged periods you will run the risk of the oxidation of > the electrolytes, and loss of capacity. > > > Store your batteries where they will "age" the least, ie. cool, dry > > and least subject to damage. > > True, but never store fully charged. > > > Question: is a freezer bad if in a moisture-proof package? > > Never freeze a Li-ion battery!! If the casing splits, it could have an > explosive reaction if it comes in to contact with any type of water > based compound. > > M -- You received this message because you are a member of G-Books, a group for those using G3 iBooks and PowerBooks (we run a separate list for G4 'Books). The list FAQ is at http://lowendmac.com/lists/g-books.html and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to [email protected] To leave this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/g-books Support for older Macs: http://lowendmac.com/services/
