RE: [gentoo-user] Re: Full battery laptop only 1 hour
>-Original Message- >From: Michael >Sent: Thursday, September 15, 2022 11:01 AM >To: gentoo-user@lists.gentoo.org >Subject: Re: [gentoo-user] Re: Full battery laptop only 1 hour > >On Thursday, 15 September 2022 18:10:39 BST Laurence Perkins wrote: >> Note that most batteries these days in anything more complex than a >> watch have "smart" charge controllers and so upower or similar can >> read what their design watt-hours and current maximum capacity are. >> Also, often the total charge or discharge rate. That plus a little >> math should tell you if it's an aging battery or if your machine is >> simply failing to idle down for some reason. > >> LMP > >Larger capacity batteries have multiple banks in them connected in parallel. >Some times one of the banks or its controller(?) fails and while the rest >continue to work, the loss in capacity is a noticeable step change. I recall >suddenly losing ~1/3 of the battery capacity on a laptop just 3 or so happy >years into its life. The remaining of the battery capacity continued to >degrade slowly and gradually over many years. So notwithstanding the high >consumption identified by the OP the software causes of which should be >investigated, there could be also a problem with the battery unit itself. > >BTW, short & frequent top ups of lithium-ion batteries is the best approach to >their charging, while deep discharge can guarantee a shorter effective life. > At the same time, don't make it too short. The charger has to run for a few seconds to a few minutes to determine that the battery is, in fact, full, and repeated overcharging in that manner will destroy the battery in short order. Let it run down at least a few percent before you plug it in again. Their lifetime is generally happiest if you keep them between 50 and 80%. Some packs automatically cut off the charging at the 80% mark and just tell you that it's full in order to increase the cycle count. LMP
Re: [gentoo-user] Re: Full battery laptop only 1 hour
On Thursday, 15 September 2022 18:10:39 BST Laurence Perkins wrote: > Note that most batteries these days in anything more complex than a watch > have "smart" charge controllers and so upower or similar can read what > their design watt-hours and current maximum capacity are. Also, often the > total charge or discharge rate. That plus a little math should tell you if > it's an aging battery or if your machine is simply failing to idle down for > some reason. > LMP Larger capacity batteries have multiple banks in them connected in parallel. Some times one of the banks or its controller(?) fails and while the rest continue to work, the loss in capacity is a noticeable step change. I recall suddenly losing ~1/3 of the battery capacity on a laptop just 3 or so happy years into its life. The remaining of the battery capacity continued to degrade slowly and gradually over many years. So notwithstanding the high consumption identified by the OP the software causes of which should be investigated, there could be also a problem with the battery unit itself. BTW, short & frequent top ups of lithium-ion batteries is the best approach to their charging, while deep discharge can guarantee a shorter effective life. signature.asc Description: This is a digitally signed message part.
RE: [gentoo-user] Re: Full battery laptop only 1 hour
Note that most batteries these days in anything more complex than a watch have "smart" charge controllers and so upower or similar can read what their design watt-hours and current maximum capacity are. Also, often the total charge or discharge rate. That plus a little math should tell you if it's an aging battery or if your machine is simply failing to idle down for some reason. LMP -Original Message- From: Frank Steinmetzger Sent: Tuesday, September 13, 2022 4:46 PM To: gentoo-user@lists.gentoo.org Subject: Re: [gentoo-user] Re: Full battery laptop only 1 hour Am Mon, Sep 12, 2022 at 01:51:39PM -0700 schrieb Mark Knecht: > On Mon, Sep 12, 2022 at 1:40 PM Nuno Silva wrote: > > > > On 2022-09-12, Guillermo García wrote: > > > > > Hello guys, > > > > > > I bought a laptop and i got like 4 hours of batter life, > > > everything ok, (using more than 1 vm, etc), however now in idle my > > > laptop has only 1 hour of life, which is really annoying because > > > its a brand new laptop bought one year before. > > > > Did anything change? Is this the same system/install which used to > > last > > 4 hours on idle? Or, when you say "brand new bought one year > > before", you mean it wasn't used before? > > > > -- > > Nuno Silva > > > > Battery life can change over time. I've had batteries that after a > couple of years just didn't last as long. I've purchased a few > replacement batteries from Amazon and one of them didn't hold charge at all. My Thinkpad is 6¼ years old and the batteries it shipped with are at 72 and 75 % of their original capacity. But I didn’t use them *that* much, and always kept them betweet 40 and 80 % charge when I didn’t need them, which is probably 98 % of the year. > 1 year is pretty short but possibly he might buy a new battery as a > test. They generally aren't overly expensive. I don’t believe that they went down to 25 % of their original capacity within a year. To achieve that, they must have endured unspeakable abuse. -- Grüße | Greetings | Salut | Qapla’ Please do not share anything from, with or about me on any social network. The three main languages in India: Hindi, English and HTML.
Re: [gentoo-user] Re: Full battery laptop only 1 hour
Am Mon, Sep 12, 2022 at 01:51:39PM -0700 schrieb Mark Knecht: > On Mon, Sep 12, 2022 at 1:40 PM Nuno Silva wrote: > > > > On 2022-09-12, Guillermo García wrote: > > > > > Hello guys, > > > > > > I bought a laptop and i got like 4 hours of batter life, everything > > > ok, (using more than 1 vm, etc), however now in idle my laptop has > > > only 1 hour of life, which is really annoying because its a brand new > > > laptop bought one year before. > > > > Did anything change? Is this the same system/install which used to last > > 4 hours on idle? Or, when you say "brand new bought one year before", > > you mean it wasn't used before? > > > > -- > > Nuno Silva > > > > Battery life can change over time. I've had batteries that after a couple of > years just didn't last as long. I've purchased a few replacement batteries > from Amazon and one of them didn't hold charge at all. My Thinkpad is 6¼ years old and the batteries it shipped with are at 72 and 75 % of their original capacity. But I didn’t use them *that* much, and always kept them betweet 40 and 80 % charge when I didn’t need them, which is probably 98 % of the year. > 1 year is pretty short but possibly he might buy a new battery as > a test. They generally aren't overly expensive. I don’t believe that they went down to 25 % of their original capacity within a year. To achieve that, they must have endured unspeakable abuse. -- Grüße | Greetings | Salut | Qapla’ Please do not share anything from, with or about me on any social network. The three main languages in India: Hindi, English and HTML. signature.asc Description: PGP signature
Re: [gentoo-user] Re: Full battery laptop only 1 hour
On Mon, Sep 12, 2022 at 1:40 PM Nuno Silva wrote: > > On 2022-09-12, Guillermo García wrote: > > > Hello guys, > > > > I bought a laptop and i got like 4 hours of batter life, everything > > ok, (using more than 1 vm, etc), however now in idle my laptop has > > only 1 hour of life, which is really annoying because its a brand new > > laptop bought one year before. > > Did anything change? Is this the same system/install which used to last > 4 hours on idle? Or, when you say "brand new bought one year before", > you mean it wasn't used before? > > -- > Nuno Silva > Battery life can change over time. I've had batteries that after a couple of years just didn't last as long. I've purchased a few replacement batteries from Amazon and one of them didn't hold charge at all. 1 year is pretty short but possibly he might buy a new battery as a test. They generally aren't overly expensive. Or how about booting just to a console and testing how long the machine stays up?
