is automatically resumed. will a cheap charging pack for iphone 5 effect the battery life like “pocket juice”. will it be bad effective if I use my notebook keeping it connected in AC always,, Thnx in Advance. Or I need to turn off the laptop in order to remove the battery? * Recommended. If the motor is locked such that it can't spin, angular velocity and thus mechanical power must be zero, and all the chemical energy goes to heat, just as would happen connecting a resistor across the battery. Slow charge = 14h My UL V-2833 Class 2 Battery Charger does not work (or, at least the charging lights don’t turn on), and I never even used it once! A B&D drill battery LBXR 1512, 12v, slide-in battery. I put the electrolyte in (glove box) and then do the final seal. This might be loosely affiliated with the Second Law of Thermodynamics (entropy). Standard USB and USB C cables are only rated to handle up to 3 Amps, and micro-USB cables less than 2 Amps. ur rite I searched every where but i did’nt find the answer thanks. Keep cells at >2.05V. i have a new laptop and i charged it less than 5 hours on first charge, is it bad? Will work just fine, Thanks. If you feel like your car will be parked for a while, putting a trickle charge on your battery would probably be the best solution. In the two times it was not connected directly to power outlet but rather through USB of a TV or CPU of desktop PC. Regarding partial charging a Li based battery: In Radio Control applications the “LVC” (low voltage cutoff) is often based on the voltage of the pack when it is plugged in. Is it possible to get some guidance PLEASE. Do not leave battery in charger for more than a few days Subject to memory. Could I use a bike powered charger to charge the battery for my e bike it’s not a li ion battery just a regular one. Some owners manuals suggest leaving ‘it’ plugged in ‘for a while’. also please tell is it good to perform full recharge cycle in cell phone batteries with 1500 mah capacities or lower??? I am fitting an LED module to an outside burglar alarm to give an operating display usually running on a 9v alkaline PP9. It was because i only use direct power, and when the electricity suddenly shut down, it also shut my laptop. discharge until 20%, then plug in the A/C immediately and countinue using, or shut down, let it cool, then charge? Is it safe to charge a smartphone while it is in an Otterbox case? plz tell if using laptop without battery affect’s its performance? Thanx gguys. These two options are not easily available on a trip or hotels and in so many countries the power outlet is 110. In practice some fraction of the energy is always lost to friction and resistive losses in the wires, motor windings, and internals of the battery, making thermal energy. Is there any problem in battery? Hi Everybody. BU-206: Lithium-polymer: Substance or Hype? If you try to charge with 1.2 V then almost no current would flow as the voltages of the source (your DC motor) and battery are equal. In two weeks, it has already dropped to 88% charge and my computer is brand new. This is especially true when one is dealing with one of those nine volt ‘jobs’, whereas both terminals are at the same end. Does this indicate that the batteries are old stock?....have been in stock with electrolyte for months… we are using 48VDC for our Repeater sites and this is the first delivery (replacement of of our old batteries) consisting of 96 sites. Voltage, on the other hand, is the ⦠Avoid full discharges. The Li-ion battery?If the power is not full, just charge it. If one were to unplug the charger from the wall, it becomes inert. its a new hp. How does amperage affect battery charging? Is it trure that charging your cell phone while making a call could cause your device to explode? If your charger has a higher voltage, they will move into the "too many electrons" side and charge your battery. Personal care almost always wins. What quantity of water is damaged if I dispose a battery there? should the charger be connected even if battery is fully charged? Some body says that if your phone shows 100% it means that the battery charges to70% is it true. Constant voltage to 2.40–2.45/cell, float When the radio switches itself off, the battery is fully Just bought a new replacement battery for hp laptop. charge. I’m a punk band drummer. If someone overfilled the sealed Ni-Cd batteries,what are the danger may be there? Store at 40% charge in cool place (40% SoC reads 3.75–3.80V/cell). It is generally safer to remove and replace the battery when the computer is turned off, but as long as the computer is plugged in there should be no major problems. The current flowing through the coil creates a magnetic field that opposes the magnetic field of the rotor, resulting in a force on the rotor opposite the direction of motion, slowing it down. what should i do? 3 ans: i have an inspiron 1545, an inspiron n4050 and a inspiron 14r5421 so there is no way to decrease the heat if u r performing heavy operations. Your explanation is correct. My dell laptop battery has a mind of its own and refuses to accept firmware settings 80 percent of the time. Will this not harm my scooter’s battery? Wen i unplug it, i use d main battry to 20%. My question is—can storing rechargable batteries in the unplugged recharging unit cause it to break? Just charge it till the battery is full Yes u an leave the charging on if the battery is not dry battery and the charger isnt available all the time but i recommend u buy a 12 v over charge protection kit or u can make it urself The ideal car battery voltage range will provide you with a relevant interval according to which you can measure precisely what the voltage says about the batteryâs current charge. I have few quetions on charging cell phone batteries. The answer to keep the battery and/or power plugged on a notebook, is that: 1- li-ion has more life if you limit high charge and discharge. I connect it to a battery analyzer and set it to cycle (formation?). So, I have a Dell laptop with Li-Ion that I got last year. Is it possible to used UPS to charge or extent time for 2hr, for my rechargeable Fan when light goes off at night, I have a KAITOL solar radio. Battery should stay cool; no fast charge possible. Some Lenovo notebook models have a very good charging app that can keep battery charge between certain values you choose, or just choose “extend battery life”. (Is this okay in the long run eg, constant usage with the charger on for 8 hours a day?) This has been a topic of discussion for days now without any real proof other than educated guesses. Rapid charge = 3h* We recommend posting your question in the comment sections for the Battery University Group (BUG) to share. Keep cool. I am an active gamer, so with that, I would like to ask (I HOPE I GET ANSWERS) if should I leave my laptop plugged in when playing games? However would still like to know whether an original charger supplied with a new laptop does charging such that the charging current decreases as the battery attains its full voltage. Do not go below 2.0V/cell. 1.Which one’s better?? Is the tranyoo R3 18 w Quick charge 3 good for xiaomi redmi note 8? You should find that you will get about 30 % longer between charges; all else being equal. Thanks. Currently I am working on creating a DC motor that when manually cranked, or spun, will charge a rechargeable battery. I want to charge a battery which is being used by a DC motor at the same time can the charger be unplugged from the wall but left plugged in to the battery port or will this drain the battery. If the voltage is too high, you might end up shorting out your devices because you'll overload the circuits. Now i know its true that the 80-40% story is true and is 90-20% to be exact. To condition a NiMH battery: If we include friction, then the kinetic energy is slowly converted to heat and dissipated. Are there disadvantages? If I have an odd number of AA batteries, can I pair it one that is empty of charge with one of the exact same spec and type that has been fully charged, without damage to either? In my case I’m referring to fast discharging and fast charging for my drone batteries, Hi All, Is there any possibility of charging Batteries of an EV while its plying on the road. Profitable to recycle. Sometimes battery-powered devices use battery power even they are charging, so they “drain” batteries when charging. Thanks for your help, it was really helpful for me to have my new Laptop Battery understand and how to maintain. i unplugged it after using. 3.Is it good to charge my battery when it’s 20% or 50%?? Gassing due to overcharging also "uses up" the water in your electrolyte, and in sealed batteries will fairly soon ruin the battery. I would appreciate if someone could kindly advice on this. Just seems it needs to rest for at least a few minutes so it doesn’t go straight from fast charging directly to fast discharging. Thank u, I hv a question please. is there any downside other than there’s a scheduled power off. Will a lithium-ion laptop battery discharge if the laptop is shut down and the charger is left plugged into the laptop, but is not plugged into the wall socket power? Can i use a lithium ion battery charger with output of 67.2V 3A for a 67.2V 2A charger? The hobgoblins that proved causal in regards to the battery ‘explosion’ in the ‘Scooter’ was probably caused by current ‘overloading’ the Scooter’s batteries… as you know. NiCd: Do not dispose. without harming the battery, the radio, or the charger. Hi, I would like to know what’s the difference between an iPhone battery that is not supporting quick charge and a battery from an android phone that is supporting quick charge 3.0 (qualcomm) for example ? If you want to prevent this scenario, a simple solution is using a diode in series to prevent a reverse current flow: A motor and a generator are more or less the same device, just optimized for a different application. Thanks, these are helpful information:) But what about Li-Polymer batteries, how to charge them? As soon as we unplug it, the screen dims. A regulated charger will hold the voltage to 13.5 to 13.8 volts once the voltage has peaked, to prevent gassing and overcharging, and the current will drop to almost zero in a healthy battery. I did read that for Li-ion battery it would be best to not charge fully, simply wonder if my battery is broken or something. This mechanical energy will accelerate the motor shaft until its speed makes the motor voltage equal to the battery voltage, stopping the current flow (strictly speaking, the motor voltage will rise until being slightly lower than the battery voltage). Also, I read from other sites that it is better to leave the battery with 40% - 80% charge (ie charge till 80%, unplug the charger and charge again at 40%) Is long term partial discharge harmful to the battery? In general, to charge a battery, you need to apply a slightly higher voltage to the battery than the current battery's voltage. With an MPPT charge controller, the panel can operate at its maximum power point and in turn can generate much more power. Am I correct? 3- It’s best to have a smart charging app, but if you don’t, you could charge or discharge until battery is at 40%, then remove and store the battery, but that way you have no battery backup power if mains power goes out, and you shouldplug the battery now and then to check state of charge. being an electrical engineer and programmer, 1.ans: u can fully charge ur laptop, it will be off no harm to the battery And will the polarity of the mOtor be reverse too in case of charging? In this situation the motor will be running using the battery's energy. My question is, if I spun a DC motor to create a current that is 2.0V into a battery that is 1.2V what happens to the energy (spinning DC motor) when the voltage slows down to below 1.2V? I need to buy a charger for a CRV3 battery, and I was wondering if there is a problem charging generic batteries with a Kodak charger and vice versa. But i advise u the best possible way of applicable solution that is, U use the laptop while on charging normally, and must discharge it fully below 10% once a month to keep ur battery healthy. Then when it reaches < 30%, I plug it once again and wait for it to charge back to 80%. Thanks in advance. Using the PWM controller, the panel voltage must drop to match the battery voltage and so the power output is reduced dramatically. However, when I traveled with it, I stored the batteries in the unit itself, unplugged of course. I have the same question as Glorianne too. The charger is optimal when the charger size is between ten and twenty-five percent of the amp-hour rating of the battery. Constant current, NiCd can be fast charged without stress; trickle charge ⦠So what is the real, I can keep it on dock or travel charger while using it or no? Only the resistor is the long length of wire in the motor winding. If I use a higher capacity battery, NB 4L, 3.7V 900mAh (lion)] - will it damage the camera? Table 1 summarizes how to prolong battery life through proper attention. But these new machines have a very efficient over charge protection system Charge time 14–16h. The battery manufacturer decides how much energy can be stored in the cell, and that determines how much energy you have available to use. The typical wet-cell battery (lead plates in a mixture of sulfuric acid and water) needs to be charged up to about 14.+ volts in order to adequately distribute those funny little things called electrons ⦠If a pump is connected to the motor you could pump water uphill, making gravitational potential energy. Can a Li-ion battery be charged via a solar panel? It really doesnt matter Please help me! The motor voltage is proportional to the shaft speed Ï : V m o t o r = K × Ï If the motor voltage is greater than the battery voltage, current will flow from the motor to the battery, charging it. You can also provide a link from the web. 2.i have read at most sites that li-ion batteries have fixed no. 1) Keep working with AC Power on for continously for a month and then discrhage the battery fully and then continue or Is it OK to recharge a Li-ion battery immediately after use? Site by. My last laptop is useless now because the motherboard is not functional now. For example, if a brake is connected to the motor you get friction, and thermal energy. We like to hear from you but we cannot answer all inquiries. I have since bypassed the electronics inside the battery and am charging it directly at 0.3A. If its a normal acid water battery? i have a lenovo g510. https://electronics.stackexchange.com/questions/371223/where-does-energy-go-when-not-enough-voltage-is-applied-to-charge-a-battery/371228#371228, https://electronics.stackexchange.com/questions/371223/where-does-energy-go-when-not-enough-voltage-is-applied-to-charge-a-battery/371227#371227, https://electronics.stackexchange.com/questions/371223/where-does-energy-go-when-not-enough-voltage-is-applied-to-charge-a-battery/372482#372482. My guess is… since I know its bad for you to immediately charge a fresh fast battery drain, it seems that that hold go the same for immediately fas draining it again immediately after it comes to a full charge as well. I remember that was the case with NiCd batteries when racing RC cars. Battery should stay cool; no fast charge possible. I have a quick question. By submitting this form, you are providing your express consent to receive electronic communications from Battery University and the Battery University Science and Technology email newsletter, powered by ArcaMax. Sure you can. BU-1006: Cost of Mobile and Renewable Power, Measuring Battery State-of-health by Frequency Scan, Predictive Test Methods for Starter Batteries, Why Mobile Phone Batteries do not last as long as an EV Battery, How to Charge Li-ion with a Parasitic Load, Assuring Safety of Lithium-ion in the Workforce, How to Make Battery Performance Transparent, Making Battery State-of-health Transparent. Should I stick with the same battery and use it until it cuts out, or is it best to change the battery and charge up after each job/when I get a break? Why does Pokémon Go rob so much Battery Power? In fact, amperage is the difference between a lightning quick full charge and an all-day trickle. If you would apply no power to that DC motor, obviously the 1.2 V of the battery would make it spin. There will be no basis for the end user to know that the batteries have been stored for a long time. I don’t understand how is possible for a one plus 6T McLaren device to charge from 0% to 50% in 20 minutes. Mohammadmahdiebrahimi1382@gmail.com. By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy, 2021 Stack Exchange, Inc. user contributions under cc by-sa. When your car is running the cars alternator is charging the battery, this is why you should see a higher voltage. I know that a lower temperature will raise the internal resistance and vice versa. Buy a trickle charger if u do so. What could be going wrong? I charge it every night and it doesn’t get below 50%, 40% or 30% rarely. Thanks in advance…. Thanks! They are now charging and they are being cool while at it. please explain me weather i should keep charging my laptop while using it or remove it once it is charged, Sir, Can I always Use my Laptop on AC power, after removing my Exhausted Battery? Is it gppd tp keep unplugging and plugging back in the phone while it is being charged? If a flywheel is connected to the motor you could increase its speed, making kinetic energy. Please let me know how to handle this situation? I have a 6 cell and 9 cell battery. Limit deep cycling; do not deep-cycle starter battery. It will explain better ⦠So please advise what can I do taking into consideration that my power bank is newly bought. BU-603: How to Calibrate a “Smart” Battery, BU-604: How to Process Data from a “Smart” Battery, BU-704a: Shipping Lithium-based Batteries by Air, BU-801: Setting Battery Performance Standards. Fast charge = 1h And when should I charge until the percentage reaches where? we ordered Stationary Industrial Single cell Vented Type Lead Acid (VTLA) batteries 900 AH. For eg. short and to the point ans to your questions:P Especially if the manufacturer put an air intake under the notebook. ‘Condition’ a NiMH battery every three months to extend its What should be my precautions? When it’s full, ordinarily it would stop charging. I’m supposing that will probably be ok. ATVâs generally use one of two ⦠In other words, i am charging my phone twice a day. after that i charged it to 100% always. My question, can I keep the charger always attached to the battery in order to charge it whenever the 220V is available OR that is not good for the battery? 5- Always use a base that keeps the notebook raised from the desk and allows good airflow under the notebook. Most discharges were less than 2% while transporting it on standby for about 200 occasions. So, I came here and I have read your comments people. while using it then it is fully chareg?? BU-602: How does a Battery Fuel Gauge Work? A: A car battery does not have enough voltage to charge another car's battery by itself. Constant voltage to 2.40â2.45/cell, float at 2.25â2.30V/cell. The DC motor can be modelled as a voltage source in series with a resistance: By connecting the motor directly to the battery you are making the following circuit: The motor voltage is proportional to the shaft speed \$\omega\$: No worries Still a good idea to keep it raised, as the bottom does heat somewhat because of been close to the processor, battery, other internal MB components, and HDD (if it’s mechanical. Rapid charge = 3h* ahm,. Apply topping charge** every 6 months to prevent sulfation. How many solar panels does it take to charge a 100ah battery? The circuit that was supposed to kick in (upon ‘charge completion’) didn’t. after given freshening charge of Ni-Cd battery always taken 10 amp current why??? Fast charging aims to maximize the constant current flow stageâs utility so that maximum charge can be transferred to the battery before the voltage reaches its peak value. For two years the 4110 mAhr 7.4V pack on a new ASUS notebook was rarely discharged below 92%. Can endure high peak currents. I’m pretty sure that the one plus battery may heat up big time because the charger is push really hard and fast energy. That’s one of the features Li-Ion has compare to those NimH or NicAD. View fullsize. Constant current, NiCd can be fast charged without stress; trickle charge at 0.05C. It allows for faster recharge time. Where does energy go when not enough voltage is applied to charge a battery. I have a new LG K10 and i dont know how i should charge it, will i damage my battery if i top up power while there is still some, Have 2 12v batteries on fishing boat. That is how I prolonged my battery from my Toshiba for almost 3 years now, going 4 years. i mean to say put battery into laptop when u away from power source. • Conditioning NiMH batteries A Chargie dongle can do it. Should I keep my battery constantly charging or should I go to 100% and unplug it and then charge it again when it says battery is low or maybe half way? If the AC incoming power are stable where you work at with the laptop, you can discharge your battery to 30~40% power left by using the power of the batt., then put the batt. Thank you so much! The energy hasn't gone away, it's just stored as kinetic energy of the rotor, similar to a fly-wheel. The adapter has settings and I can set it almost on 9v but for a few mV. 5.its 100% ok using laptop while charging or while fully charged. I think that high state of charge is better, as it avoids too much change inside the battery, while keeping enough power if you need it, but keep it below 80%. With batteries, how the voltage affects the charging battery reallydepends on the material it's made of. my phone uses Li-Po battery. ie: is it best to have several part discharge/charge cycles or fewer “full” (well the battery circuitry decides how deep it goes, they cut out) discharge/charge cycles? Below that voltage you cannot move the chemistry in the right direction, above that voltage you can fully charge the battery, even though it might take a long time if you are barely above the chemistry voltage. Operate in mid SoC of 30–80%. The voltage, when the engine is running, should be in the range of 13.5-14.7 volts. Avoid full discharges. What will be the internal resistance of that battery at -40°C ? Is it good to play games or use the laptop while charging the battery ....plz help me ....!!!! I use acer inspire 5516…my uncle gave it 2 me. What do I do to fix the battery? What I currently do is that I charge my laptop up to 80% (sometimes full) and then unplug it. in the beginning of this year, my laptop battery used to stay for up to 2 hrs. thanks, Forget about the charging history now Charge methods. Any thoughts on whether that's even possible or plausible? no particular danger other than the series connected batteries could have a very large added up voltage, to jessa: All rights reserved. It depends on the situation though, if your DC motor is small and can only supply say 1 A but your battery is very large and can handle a 10 A charging current, then obviously there would be no issue. warnings from the radio. It turns off when not charging. This number is usually printed directly on the original battery, allowing one to easily compare their original voltage rating with the voltage rating on the replacement battery. i didnt charge it for 12 hours the first time i used it.so now, battery work for about 2.30 hours when it supposed to work for 4.30 hours (for medium use). If the AC incoming power are quite not stable, or there’s a scheduled power off where you work at, you’d better keep them in the laptop. I know the cells will continue to deteriorate without a charge but I just want to know if there is the potential for a larger problem that I am not seeing? Hi i just got a brand new laptop. We live in Nebraska. It is important to limit that charging current so applying 2 V without any series resistance to limit the current might cause the charging current to become too high and damage the battery and/or DC motor. Is it advicable? “apply some charge after a full discharge” (I have learned it is always best not to allow cells to get hot and swap out if they do/working hard). Do I need to do anything special to dispose of it? If you have a suggestion or would like to report an error, please use the "contact us" form or email us at: BatteryU@cadex.com. BU-306: What is the Function of the Separator? $$ Hi dear Friends. I put the batteries in the unit in pairs, like the instructions say. I have gone through all the comments while I got most of the answer but I did not find the exact answer to suit my needs, here is my concern can you please let me know how to handle this situation? Renjith And can i connect a charger direct to the back of my phone if my phone no longer charges thru the port? nitin, there are a few circumstances: (like to move it to different spot) or should you plug it in and leave it untill it is fully charged. Does this affect anything with batteries without using them and charging them. sir, If i charge my DELL laptop to 100% and then plug out and work till 20% OR I keep on charging it even after 100% and use it.. and then again continue AC power? I tried running the computer for an additional 3 hours on battery power, reducing the charge to 14%. Another issue that was brought to my attention, once again, via my sister, Margaret, is when one places batteries in the ‘to be recycled’ box, it might be a good idea to take a little electrical tape and place it over the terminals. Consider LI-IO and LI-PO battery for this. I have an ASUS K455L laptop which I have bought last December. Ur welcome. After charging boat will not start. I work on Laptop most of the times from Home, there isn’t power issue however the power oges off all the sudden without any notice as there are unschedule power cuts. Discharge only when needed. (note : incase both having different charging current, electrolyte volume & CCA ? It’s the only device that does external charge limiting on Android phones. or is it better to shut it down until it finishes charging then use it?! Pls advise, Hi my laptop charger was damaged about two weeks ago and the charge on my laptop was completely gone I finanly found the same charger it’s been nearly 12 hours since iv been charging my laptop and it still does not turn on how long would I have to charge it my laptop has been dead for about two weeks now. Glorianne and Lynne; re: your enquiry about battery capacity increasing from 900 mAhrs to 1200mAhrs. Upon inspection of the batteries we found formation of white powder at the bottom of the plastic casing. The battery is li ion 11.1 ⦠I didn’t do to well on the original battery. For all types of batteries. the LED light turned white) only twice. my phone uses lithium-polymer battery. Click here to upload your image wen its ful i stil leave it on AC til i’m tru. Avoid heat. After various trial, Surprisingly, the power bank reached full charge (i.e. BU-804: How to Prolong Lead-acid Batteries, BU-804a: Corrosion, Shedding and Internal Short, BU-804c: Acid Stratification and Surface Charge, BU-805: Additives to Boost Flooded Lead Acid, BU-806: Tracking Battery Capacity and Resistance as part of Aging, BU-806a: How Heat and Loading affect Battery Life, BU-807: How to Restore Nickel-based Batteries, BU-807b:How to Restore NiMH batteries in Hybrids, BU-808: How to Prolong Lithium-based Batteries, BU-808c: Coulombic and Energy Efficiency with the Battery, BU-810: What Everyone Should Know About Aftermarket Batteries, BU-902: How to Measure Internal Resistance, BU-905a: Testing Starter Batteries in Vehicles, BU-912: How to Test Mobile Phone Batteries, BU-1002: Electric Powertrain, then and now, BU-1002a: Hybrid Electric Vehicles and the Battery, BU-1002b: Environmental Benefit of the Electric Powertrain, BU-1003a: Battery Aging in an Electric Vehicle (EV). 2- however, if you need to run the notebook on battery unexpectedly, then you will onky have 80%. It refers to the capability of the battery to deliver power. Recently when running it on battery power for 40 minutes, the battery LED began incessantly flashing amber/green. hello, just wanna ask, I have just bought new mobile phone with new battery, and after a week, I couldn’t charge it to full (100%), it would start charging slowly after 90%, not even 1% per hour, is it normal? Becoz if u read the instuctions from ur ac charger BU-410: Charging at High and Low Temperatures, BU-413a: How to Store Renewable Energy in a Battery. That’s “80% depth-of-discharge”, DIScharge, not charge. If yes then shoudl I keep discharging Battery manually by switching off power? To unravel the mistery, we must model your situation first. This primarily occurs because of variations in capacity, but the age and condition of the battery also play a role. Well it is harmful for ur fone battery (this fast charging and fast discharging) because ur battery has a limited number of cycles and according to u that u are using 2 cycles per day The following advice is in a portable radio users manual. 4.pLEase do answers my 1. away your laptop to storage them;
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