> On 24 Jan 2015, at 9:00 am, [email protected] wrote: > > So, having absorbed, from my friends, the dangers of partially recharging > a lithium-ion battery due to “memory”, I read the insert that came with > the new laptop battery: – > > “Recharging a partially charged lithium-ion does not cause harm because > there is no memory. Short battery life is mainly caused by heat rather than > charge/discharge patterns.”
Terry Pratchett: He does know Big Words after all he is a dealer … Battery Technology is VERY complex, so either you become a guru or you believe the manufacturer. lithium-ion is complex enough that I cannot believe that a manufacturer would make a charger that does not do the right thing. (lithium-ion-phosphate may NEVER be flattened, so even more complex) The only severe rule for mortals is to never charge A sort batteries with a B sort charger the consequences are fire and explosion. I opine that you may use the laptop permenantly 'on charge’ yet I have seen a disportionate number of dead laptop batteries contradicting what I say above. General Rule #1: Every time you flattern a battery you use up a percentage of it’s life. The ideal charger would keep the batteries at 99% charged allowing you to always charge (not 100% because the 100% level is temperature dependant and you don’t want to go to 101% because the day warmed or cooled) So if you have bought a system with a lessor charger you will buy batteries, the more you play the better the battery life, but like death and taxes dead battries. James -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
