cleans your computer’s registry. Sauf indication contraire ou complémentaire, les informations mentionnées dans cette section peuvent être confirmées par la base de données IMDb. Tempature is cool and humidity is about 20%. No where in the article it says that 11%  is ” deep enough   to have a significant effect on battery life ” This is purely based on your assumption. I have used a lower powered charger on my mobile phone and it does seem to help re temp. Look at my comments above. I have a smartphone with li-ion battery. No joy, the T1114 declares ‘no battery’ and immediately shuts down. ** Based on a new battery with 100% capacity when charged to the full voltage. I have a Nokia N70 Me for several years (may be 4 or 5) with a Li-Ion (BL-5C) battery, what i use to do is to charge 100 %, and use phone until the battery is full discharge. Great article but I still have questions:  I just bought a new laptop. Bitter bitter raspberries Apple…. Thread Count 1017 I am an amateur in this filed. However, some companies claim 1000 or more. The understand the advice that has been given. . Knowing this, my main concern is that I need to use my notebook for a prolonged period of time, many hours a day, often from morning to night, and I rarely need the battery as a source of power, working in places where the AC power is always available. It will limit charging to 80 or 90% (or whatever you wish) and your phone will last for many years to come, until its technology is really obsolete. I an a more moderate usage and I only use about 220 after 1.7 years (I had a 6s+ as well). Thanks for an informative article. Hi Paul. What’s the ‘least’ bad for my battery? Please reconnect the proper AC adapter.” But it can be as high as 4470mV. Does freezing cause dammage to the batery? Notable advancements have been made in longevity and safety while the capacity is increasing incrementally. A deep discharge should be avoided not just because it might ruin the battery, but also because such a battery might suddenly start to burn or even explode. Often the discussion leads in tlo technical descriptions but no clear answer…. I have discharged my battery below 5% about 10 times in the first 3 weeks and let it run to 0% twice. High rate and high power discharge capability 40% ... or 70% ?? Here I have extended it with a third column, taking the deterioration into account. but I had experienced I used my laptop hp mostly on AC . It’s amazing the amount of FUD that there is out there, not helped by the fact that most manufacturers are particularly vague with regards to their battery care and handling instructions. They ry to avoid both toping off and complee draining based on the users lifestyle. The voltage for my previous phone which i need to send back at 61% battery is 3920mv so 3.92V but on this one (due to damage i suspect of being stored at 0% and sleep switch activated ) at 61% reads 3855mv (3.85V) is the difference of 70mv (0.7V) a significant difference? I just purchased a 20v “professional” cordless drill/driver (Craftsman brand) from Sears at 60% off the original price. Why is it bad? And, there’s another thing. If the charger says 1.0A, that is the maximum current it is designed to deliver, but that doesn’t mean the smartphone will send that much to the battery. With this in mind, I’m keeping my Galaxy S7 Edge between 20-60% most times, and try to avoid charging over 80% on my iPhone SE. The tool has a year warranty. You can recharge it 1500 times you’ve now gotten 7500 units of use from the battery. I also wanted to point out the results of cycle life on fast charging. Can a battery, namely Li-ion be charged and discharged at the same time,without a disruption in the output. What’s the point in prolonging consumer Li-ion batteries when the devices they power are technologically life constrained by their very own functions and features. Charging / Discharging of Lithium Batteries - and useful life of the battery I also wanted to express my gratitude on the information given about lithium based batteries. Thanks to Battery University for this infomation. Sealed cells; no maintenance required                   Moderate initial cost It depends on what you mean by “should”. BU-1005: Does the Fuel Cell-powered Vehicle have a Future? The study shows that 10% and 25% depth of discharge was not as good as 50% (table 2) but would have liked to see the 75% and 90% depth of discharge data as those would be more practical options. He is 100% right. Surely leaving the laptop plugged in all the time will lead to “keeping a fully charged battery at elevated temperatures”, no? Simple problem + organization with vested interests + facility to hide behind lawyers = next to zero problem solving capacity. should i remove my hp625 battery while gaming or watching movies, the indicator says not charging when the battery reaches its full condition and i heard that if you remove battery it will cause damage to laptop while in serius actions that need some extra power and actually the battery can work as an back up power to save hardwares. it’s just that i have a very large pile of, what were, high quality battery packs and would like to know if i can ever derive an practical use for them? Newer laptops now have energy managers that regulate the charging and discharging of their batteries. Your article and discussions on DoD is interesting, to work out the number of DoD vs kms travelled and to try and work out the lifecycle capacity left on a battery and the kms remaining to be run. The other vendors need to open their eyes and tend to their tardy homework. Doesn’t this mean that the curves ending in a 100% SoC are unrealistically inflating the degradation of the batteries? There is no memory and the battery does not need periodic full discharge cycles to prolong life. I achieved this by hardly ever using the computer.” It is as easy as 1+1 for a charger to “read” the battery, look after the battery, and at the same time deliver power separately to the rest of the system. My cell phone battery is Li-Ion 3.7 vdc. After that discharge the entire pack, charge again and repeat until they get tighter. You probably don’t want to acknowledge that people with less knowledge compensate by making more rude noise. BU-802a: How does Rising Internal Resistance affect Performance? Newsflash: it is not. Thanks Paul, I’ve started taking both of your advice and charging the phone whenever I have a charger available. Should I remove the battery when I can plug the laptop in even though the battery is 100% or close to? You want to run the laptop without the battery if you can. Life extended by two years so far! Table 2 presents discharge data from a default charge voltage which isn’t stated, but I suspect is 4.20 V.  (“DoD is assumed from a fully charged battery to said percentage level regardless of SoH.”)  But charging to 4.20 V degrades the cell irrespective of depth of discharge. I don’t know much about batteries and would be grateful for your expert advice, For a LI-ion battery , what is the operating voltage range. The problem is that battery replacements available for sale are as old as the one currently being used, and they have also degraded over time. Device Name Generic USB Hub From my side, I would recommend not to use animated wallpapers which might eat not just the battery but also the processor speed. being an electronics Engineer . So which is correct? 75%-45% = 0.3 x 5000 = 1500 full-cycles How long do I charge a new laptop battery before use? It’s good to understand a little bit of the science and practices of batteries and long-term storage. 10% DoD provides 470 units. So, base on this article, if we keep the voltage at about 3.92, it should prolong the battery life. You have a flat battery, flat tires and find the rats made their nests out of the bits and pieces that used to make the car go. A. is this routine harmful for the life of a Li-Battery? Actually i wrote about Laptop Battery Maintenance before, it’s about how to maintain your laptop battery by doing regular fully cycle (fully charge and then fully discharge). The only way to obtain that information is by hands-on testing. If I reach that point, I would dissect the battery, ebay some Li-Ion and then solder it to place. For Tina ~ Once in a while, in plugged in mode with the battery in your Laptop go to all programmes > H.P.Support Assistant > Trouble Shooting > Power and Thermal > Battery check. The mixture is flammable. They’re stronger, and thus more damaging, at high temperatures and high or low charge states. I monitor it to avoid over charging. (By solid, I mean this primarily excludes lead acid, which thrives on a continuous full charge, within limits, and can be destroyed by a full discharge. What is the better practice for keeping battery well? Should I abandon the manufacturer’s charger with Quick Charge and always charge from my PC’s USB port though it’s super slow? I still dont understand why any of the people above still hav’nt understood what the author means be a cycle. They are not doing this simply because they want users to be confused and they want batteries to stop working, on average, just out of warranty, so that they can sell more batteries. One of them (mine) was charged using the 40-80 method, while the other one was used normally. There is zero charge showing in the recharge window. I have an application which requires 3.9-4V. Lors de la sortie de la version director's cut en 1997, Das Boot enregistre 124 700 entrées, soit 572 426 $[16], portant le cumul toutes exploitations à 11 487 676 $ de recettes (3 837 400 entrées)[15]. Notebooks not just turn off automatically, they also need a pretty high charge level to even power up, so using up the battery entirely still leaves enough charge for the battery to not be damaged (anything else would be a pretty big oversight/design flaw, wouldn’t it). I’m trying to extend a battery life, but can’t work on a slow and dim PC. I’ve never seen another notebook battery last as long as this one. Any way to predict this?. What is 120 Vca ? Battery saving tricks are always welcome. Great information, historical, evolving to present-future. In response to Evi1M4chine on November 2, 2017 at 10:26pm, Have in mind please I am not an expert.——————————. Matt J., you’re quite exaggerating by claiming that discharging down to 11% is already a deep discharge. Excellent information on Li-Ion laptop batteries. If I have finished what I am doing and it has got to say 60%, do let it continue up to 100% and then run down, or just run down from that 60%? Also the batteries that are still at 1.5 volts after deployment appear to be erratic on their performance for continued use. Acer Aspire 5 Slim Laptop, 15.6 Inches Full HD IPS Display, AMD Ryzen 3 3200u - 4GB DERP/DURP from back in 2010, if you’re out there,feel ya. As a simple guideline, every 70mV reduction in charge voltage lowers the overall capacity by 10 percent. Heck my 3DS has been on for 3 days and still has 2/3 charge, tho a lot was in standby mode. I throw them out…, “Nor about throwing it out after three weeks of standby. (3) Keep the charger on all the time. What is a C? I hope someone can provide more insight. Battery:Battery Information “a) Shall I keep my laptop/smartphone (in my case surface pro 4, so taking battery out is not possible) plugged in while I’m for example at home/office or b) is it better to prolong battery life by using it until XX%? Li-ion go to 4.2 and lifepo4 is 3.6v. #2.: Quality of actual Lithium cells. The battery has to be fully drained and then fully charged. Thank you! High voltages and exposure to elevated temperature is said to degrade the battery quicker than cycling under normal condition. For notebook batteries that usually operate in the range of 10-12V I couldn’t find any values, but applying the same ratio as above, 60% would equal 6-7.2V. I have a question - I see lot of experts here, I would be thankfull if someone can answer this question. Aucune visite n'est autorisée depuis la cession du bunker par la Marine nationale, le bâtiment propriété de la CCI de La Rochelle, dangereux et à l'abandon, a été inscrit dans le secteur interdit du port autonome de La Rochelle. for the battery. Keeping the battery always at full charge and especially plugged on a charger for long time will shorten it’s life. My battery for Dell 6230 dont charging (0%) and after the check show these: They would not be able to do this if your ‘legal obligation’ were real. Capacity of battery remained constant for more than 2 years now, what might be due to such ‘soft charging’, but also due to quality of Sony batteries. My earnest submission to you ~ One, buy an original charger which came with your Laptop and second learn how to calibrate your battery periodically. My guess is that this happens when approaching 80% full, a reasonable tradeoff between battery life and battery longevity. Dear Kenelm Ulric Dogcio , I advise the better way is 10%—90%. Not all Li-ion systems behave the same. So those who seek maximum lifespan in total years of use should keep their cells as cool as practical and as close to a 58% state of charge (3.92 V) as practical. only once in a while you may use your Laptop plugged in with the battery fully ( A circuit in the battery stops the battery being charged once it attains 100%  so as to protect the battery from being over charged ) If you a using your Laptop more as a desktop for more than two weeks, it is better to take out the battery and keep it in a coll dry place. As far as my logic goes then at least in 2011, it’s ok to keep your laptop plugged in with the battery attached, because These Li-ion cells would not normally be protected from either overcharge or over discharge when used for other purposes than originally designed for. Ideally if there is always an outlet nearby, the best time to charge it is 40%-50% so that it minimizes voltage cutoff and DoD to extend cycle life. The expected capacity loss of Li-ion batteries was uniform over the delivered 250 cycles and the batteries performed as expected. can be recovered via charging), surely it has not lost 15% permanently in just 1.5 months. Everyone should apply charger when battery get down to 5 or 10%. The articles here are great but getting answers on these discussions is even better. It was in laymen terms that I could understand. Or is there a finite time it will last? cycle it? When unplugged, the voltage drops to around 4200mV in several minutes. I am considering the purchase of a lower-wattage (amps) charger which will charge slower and at maybe a lower induced temp. This reflects in increased weight and higher initial cost. 4.2 to 4.1). What it show? Pour plus de réalisme, celui-ci parcourt le sous-marin tout du long avec une petite caméra subjective. The Boeing 787 Dreamliner lithium ion battery caught fire several times. Li-ion batteries are equipped with small chipsets though that control the charging process and report stats back to the operating system. This will also help calibrate your phone’s battery meter to the new battery. Funny, if you paid $200 to read David Linden’s Handbook of Batteries 3rd Edition it will tell you that lithium ion batteries have a good shelf life. *How. as mentioned earlier. I must recharge once a day which I do at then end of the day until the morning.). Thanks Edward. Trying to decide whether to send it back. ...beyond being paper weights? Buy a WeMo smart switch. I use it without the battery and I keep it at 40%. Will it make no difference to plug the battery in and out with the laptop running on AC power or is battery life saved by turning the computer off first for the switch between power sources? You are very correct - most people will get a new phone at or around 2-3 years. This was so simple, after finding suitable relays that would release the holding coil when the voltage dropped below the desired level. Anyone here noticed that this comment thread has been active since 2010? Similar to a mechanical device that wears out faster with heavy use, the depth of discharge (DoD) determines the cycle count of the battery. Pendant son transit il reçoit un message lui ordonnant de ravitailler à Vigo en Espagne puis de rallier le port italien de La Spezia. The underlying issue is “how humans should behave in order to handle technology”. and battery longevity. However, the OS illustrates a lightning bolt over the battery icon at the top of the screen which suggests the battery is charging when in fact it isn’t. The benefits of discharging a battery depends on the battery type (chemistry). This article sais: Environmental conditions, and not cycling alone, are a key ingredient to longevity, and the worst situation is keeping a fully charged battery at elevated temperatures. Is there an extended version of the battery I have? Cette version est interprétée par les chœurs de l'Armée rouge[7],[8]. The largest capacity loss occurs when discharging a fully charged Li-ion to 25 percent SoC (black); the loss would be higher if fully discharged. or something like that. How you get anger out of my reply is beyond me, but you’ve been misinterpreting the article and my replies so much that I’m not really surprised. It is in regards to the number of discharge cycles presented in Table 2 and Figure 6. The worst situation is keeping a fully charged battery at elevated temperatures. The icon read “plugged in” but it wouldn’t charge the laptop. MKING wrote: Ma bibliothèque Hi. I have seen proof time and time again that Li-Ion DOES benefit greatly from “conditioning” the battery by letting it discharge fully (until the device shuts itself down) and charging it 8-12 hours (repeat process) for the first 3-5 days. But the article seems quite clear to me, so the following is an effort to express some key points in an alternative way in the hope that they’ll be more clear. @Mike - if the drill carries the standard Craftsman “forever” warranty, you can always return the drill if the batteries prove to be unsatisfactory.****. Secondly, the number of charges is determined by using an arbitrary value of battery life. Hi….This is Hassan…i have hp probook 4530….The battery is PR06 Notebook Battery 3ICR19/66-2….10.8Vdc 4200mAh….I face power outages almost after every one or two hours. Low self-discharge rate In other words, Figure 6 presents that a 75% DoD will results in 21% loss in maximum battery capacity after ~4,000 discharge cycles, whereas Table 2 presents that an 80% DoD will results in 30% loss in maximum battery capacity after only ~400 discharge cycles (10 times fewer cycles compared to Figure 2!). i have a number of batteries from drills that won’t charge and only show 11-12v (they are 18v packs). At least I think that’s what I read. I am using a Mobile Device Sony Xperia Tipo inside the Bus and it has to be kept permanently charged as we are using its Bluetooth capability. HELP. ever! So I stuck it in the freezer for a short while and then it charged ok. USB Suspend:USB Device not Entering Suspend . Sigh. How much charge can they loose in 1-month ? NOT YOUR FREEZER. Regarding the comments on teslas - they’re holding up fairly well. “Software to hold battery at 50% charge level” Just search for it in Google by putting in the model name with the words “replacement battery” in the search box. Microsoft probably did the best they could but are handcuffed by their open hardware environment, and most hardware isn’t battery management enlightened. Looking for table number 3, can I say that the best way to use your batteries is discharge them normally (80/85%) and then charge them back just a few hours before using them again? 1. Charge at home is ~120v ~15 Amps, is it better or worst at ~240v at lower Amps? I’ve written a small program to perform unattended shutdowns of battery powered devices (such as laptops) at specific charges. However, the replacement batteries we receive, which i believe are quality last almost half the time as the original manufacturers batteries. Raising the voltage above 4.20V/cell would shorten the life. So now I never allow the battery to trickle charge to 100% pulling out the plug before around 90% to 95% max. My question today concerns the use of different charging connections and their effect on rates/quality of charge;  as was mentioned by some, the charging circuitry is contained within the device (cell phone). In my opinion, “doubling” the lifetime should mean doubling the time it takes for the battery to drop down to 700mAh of usable capacity. and then remove the battery and leave it out for 6-12 hrs before i put it back on my laptop and then discharge it down to 50% and leave it plugged in. Thus there appears to be no possible software means to control the battery’s charge level in a Mac due to lack of hardware support. @Bayu Murti: Well the thing is that one charging cycle is defined for whole capacity of battery, that means if you discharge your battery to 50 %DoD and then fully charge it two times - it is count as one charge cycle. it is well known that charging and discharging are Properties of a battery. It is best to try something else before you charge the cells separately. BU-309: How does Graphite Work in Li-ion? Jeez, does anybody know how I would properly charge the Nintendo Switch? I just bought a new battery for my Huawei Ascend cell phone I have let the battery drain completly out then gave it a full charge then let it die out and gave it a complete charge again. : low temperature, low humidity, about 40% of charge. It was worth a try, I guess. “Charge rate is often denoted as C or C-rate and signifies a charge or discharge rate equal to the capacity of a battery in one hour. Is there an ideal rate of when to charge the battery ? I’ve charged up the batteries and they seem fine, but I haven’t used the drill yet so don’t know what performance and battery life to expect. And guess what? good site, this one. Starting an engine that has been standing takes more out of the battery. is there a safe way to “wake up” a Li-ion battery relatively safely at home? definition of - senses, usage, synonyms, thesaurus. However I’ve seen (on other cources) that they use 70% of the “new” starting capacity, as for 3.9V the starting capacity is already far below 70% but they claim a 8x cycle life. That was funny. Which one is correct? Most people are familiar with this type and mistakenly assume this type represents lead-acid technology. Comments that are not speculations but based on a strong understanding of battery physics are preferred. thanks. BU-103a: Battery Breakthroughs: Myth or Fact? If we have a charger ready and need to know when to charge to prolong life, you can’t read it from the table directly. wrt Bigmart’s question on Jan.31 “What is 120Vca?” - I believe he meant 120 VAC, which stands for volts AC, standard mains in N. America. The only charger I have for it is the charger within the laptop.   Battery Type : Standard Lithium Ion Battery (VGP-BPS34 3650mAh) I am looking at the total amount of energy (in full cycles) I get before I hit 90% battery capacity: 75%-65% = 0.1 x 9000 = 900 full-cycles Can you offer more info on this? Primary lithium does, but not Li-ion. But since this article and the comments claim that many of them do not dial down the voltage when the battery is charged, no, I do NOT have confidence on the Charger which comes with the Computer.” Not without an explicit guarantee. At one time, I too, was ignorant. Also, if possibility of being true (from what I’m reading here, that should not be the case) is there a good way to discharge them faster (eg rig up something with a resistor so I don’t need to run my phone through all of these exercises?? This is for safety reasons so that the monitoring and control circuits usually within the battery pack operate correctly to control the battery charge. I’ll try to calculate this energy from the data plotted in My laptop name: Sony VAIO Fit 15 SVF15A18CX So is it suggesting we charge our phones at 50% ? You wrote that “Most users do not remove the AC power, and this practice is safe”, but of course this goes against the “Partial charge better than a full charge” guidance rule: keeping the laptop connected to the AC grid would keep the battery always at 100% charge. thanks genesis, i will do as you said, hopefully my battery will survive another year :D. Awsome sight…I have an Evo Shift and my battery gets up too 47 degree’s while using it and sometimes noy slowly? This article has been updated with lots of new information from Isidor. @Rajdeep—That is asking a lot. The battery still lasts pretty long (6+ hours). I saw the recommendation in the article to let it discharge only to 50% before recharging. L'équipage répare les avaries et le sous-marin peut faire route vers La Rochelle. This would yield that the optimal total capacity gained from the battery over its lifetime is a DOD of around 50% But it all comes down to Li-Po, Li-Ion batteries age really quickly. No, he should NOT wait until the battery is discharged to 11% That would be one of the deep discharges that shortens battery life. but if I stop using the tablets it gets charged. Alice, this is only recommended as a measure if you don’t need portability or are not doing anything important on your device that needs a backup power supply. But on what grounds do you assert that it has to be the manufacturer’s charger? I concur with John Fetter’s comments. We use the NFC capability as a Badge Reader. It must be charged to 100% no matter what when it’s in the dock. Their results show that you must compromise between better battery longevity or a larger usable capacity in a battery. I’ve read the article mostly and searched the page for “usb”, for related info. I think I know now why they have been reduced to clear. Just remember never to store batteries at 100%, no matter what. Ce couteau est réputé pour sa faiblesse sur la pointe. BU-802c: How Low can a Battery be Discharged? *Is it okay to use it while charging?—yes Das Boot sera donc une production entièrement allemande. Lab tests often get numbers that are not attainable in the field. In order to assist you keeping your battery within optimal charge levels, we created a simple free app for Android (no ads). They utilize a gore valve to help with the hear when the batteries and components expand. (Frankly this should have been implemented in all significant portable devices years ago.). Cependant en reconsultant les photos d'époque de Buchheim, elle se rend compte que les membres de l'équipage paraissaient plus âgés qu'ils ne l'étaient. so why not plugged in while in home “Figure 6 presents that a 75% DoD will results in 21% loss in maximum battery capacity after ~4,000 discharge cycles, whereas Table 2 presents that an 80% DoD will results in 30% loss in maximum battery capacity after only ~400 discharge cycles (10 times fewer cycles compared to Figure 2!). for NiMH batery This is a nasty test but LiFePO4 does it more safely than traditional Li-ion as the presentation makes clear. All sellers said that users should charge their battery 8 hours for first 3 times to maximize the capacity of battery. I work all day at home and my laptop keeps plugged all day on AC charge. Could we assume that the data in Table 2 is from real use analysis? I found that the bike’s ECM and instrument cluster will drain the pack in about 6 weeks of non-use so I’ve started making use of its quick disconnect. I have heard, but cant confirm, that the batteries, factory fresh, are chemically stabilised, somehow. So I prefer to keep my systems as cool as I can. -  DL. I’ve seen this habit destroy capacity very prematurely numerous times. Also for my electric bike is this the best SoC to maintain capacity at a prolonged period. The charger is putting out 5v. Gcat122, properly made Li-Ions should have built-in protection that prevents problems caused by overcharge. 2. Based on the data they show in the paper, the 50% DoD seems to give you the longest batt life. Seems like a lot of people more expert than me here. Now if you have a 25% DoD you get 2.5 units of use per recharge. Now the battery swelled and the charge capacitive drop seriously. 2. Also, is there an ideal range to charge/discharge the battery in e.g. This may be due to my recently acquired habit of charging it every night. The electrochemistry that relates cycling to DoD in batteries is not linear. Does that sound alright? How often should I disconnect it and how deep let the battery discharge? I am thinking of buying an electric bike, but I go away to Africa during the British winter, so the battery would be stored unattended for six months each year. Naima. I pull out the battery whenever I have access to power outlet. if you are mostly on the PC it is better that you take out the battery and store at 40% to 45 % and store it till you work on your Laptop over weekends Once charged to 100%, power your laptop from the battery till it drains and again charge to 100 % preferably with your Laptop off. I’m looking for any suggestions you might have on how I should maintain my battery. Re. Broad temperature range of operation               Need for protective circuitry One question, on your test data, does 10% battery level mean 10% reported by the Android/iOS phone itself, or does it refer to a specific voltage? This item was marked “clearance”.
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