The charging port is MINI USB. can i boost a cellphone battery using the regular charger, or do i need some special equipment to do so? Hello, I left my HP pro book 440 G2 on hibernation for few days out of town and came to meet it drained and won't charge. BU-104a: Comparing the Battery with Other Power Sources, BU-104c: The Octagon Battery What makes a Battery a Battery, BU-105: Battery Definitions and what they mean, BU-107: Comparison Table of Secondary Batteries. The battery is most likely good just dropped below the minimum charge level / voltage . Before the diode is 35.1v ,before the regulators i get 40v , it charging but very slow ,would get it self back to life even in this very slow charge? I tried everything to try to wake up my new 8 volt ac delco lithium battery ..do u have any ideas? Unfortunately could not find my multimeter leads! They are nunchaku vapros brand for ecig. After triggering a stop and starting the discharge cycle, the two better ones displayed a capacity of 0.7 Ah and 0.3 Ah - much lower than their rating of 2.4 Ah to 2.6 Ah. Is Li-ion the Solution for the Electric Vehicle? After some time, I tried putting the torch on with the charger on, the torch is lighting up, however when I remove the charger, the torch does not light. some mods only accept non protcted batterise, and some with battery protection will accept protected batteris I have many modss i mainly use a vamo with 3.7v non protected flay top Art :). Never would hold at more than ~1.5v and I gave up before I messed anything up. The explanation quoted from this website, is this". I have used the link below to look at replies to my question but the link only brings up the same general page with no responses. Pls advise, thanks. I used a iMax B6 charger and used NiMH charging with 0.1A current limit, charged the battery untill it shown 3.2V and then swopped over to lithium charging. Some of the batteries are coming in from the supplier completely discharged (less than 1V), while others in the same batch are almost fully charged (~4V). Hope this is of help to you . Thank you, Where can I find/buy a 5600mAh TYP Maimeite X60pro battery? Dear Battery University: I have a Ravpower 5600 mAH external battery, and charger for recharging my cell phone. 10 more mins and I now have 2 bars. Can I try to awaken a li-po battery from a Thinkpad notebook? Thank you! 5. Now, let's connect electrical components using soldering iron and solder wire, to complete the circuitry. I have attached images of Fritzing sch My atomizer is TOBH V3 Atty. Let's learn the main points below: The recommended charging rate of an Li-Ion Cell is between 0.5C and 1C; the full charge period is approximately TWO TO THREE hours. I tested with a multi-meter on the motherboard points where the battery connects to whilst having the charger connected and my old battery shows two pins at 8.0V and two at 3.5V whilst the others show 0V. 3. Here is the list of tools used in this Li-ion battery charger. Solder iron, solder wire, Hot blade (link to my instructable, that will help you If you have an old camera li ion cell charger, like canon. I took it apart for curiosity and some newbie studies. @ Geoffrey Mason You said you don't know how to test the battery - I read in a related thread that the inner 2 terminals aren't used, it's the outer pair that connect to the voltage. I had a related overheating problem with a laptop. How I did it was to use a computer power supply and use the 5 volt power rail. Obviously there is a bick-converter in between which manages the voltage applied to the battery. I'm only writing with my experience - do not take as a recommendation, as may be dangerous! Here it is: Choose either (1) to buy an expensive smart charger (like Cadex, above - no , I don't have any stake in the company); or (2) Replace the battery. Charge performance is approximately 99 percent and the cell continues to be cool in the course of charging process. I am a business I have some stock of RC helicopters and cameras which have been sat there for about 18 months. BU-206: Lithium-polymer: Substance or Hype? It seems to have four terminals on it. People want miracle devices all the time, and other people want to make them happy by selling them. That's it. The battery has 5 connectors 2 Red, 2 Black, 1 Green, 1 yellow, and 1 blue Tried to charge it on Red & Black terminal using my Smart Charger, but since the charger couldnt read the volt it reported over voltage error. It's advisable not to use fully charged good cell to wake up a bad cell. if it takes longer than one minute to revive, then the battery is dangerous, and should be discarded. sanjay. We seem to have fallen into the trap of none use. Connected two 9-volt batteries in series to the + and - terminals of the battery for 2 seconds. Copper shunts may have formed inside the cells that can lead to a partial or total electrical short. I used a 12v lead-acid battery and a couple wires. Could it be the batteries are finished or is the thermistor faulty? You can get little chips from Avago technologies that will put a very low current into a discharged LiON until it rises to a safe threshold and then charge normally. I have a Sony xperia m phone. The reason not to try to fool with it yourself is that it really can go up in your face. Deciding on a lower voltage tolerance or getting rid of the saturation charge completely, extends battery life although that lowers the back up time slightly. with the same kind of battery.but i lost it and got it after many days.so the battery is completely drained.now how to fix it.do anyone have a solution other than changing the battery. About 2/3 of them were in good condition (about 1/2 in neer new condition) and none have failed since then. Search online for new or good used batteries or a local computer repair shop. I'm wondering is that battery safe for using now, i dont really need that battery, but if its working fine maybe i'll find use for it since the cell phone i got it from is dead :), I had such a battery Hit it with a 40V pulse for 500 nsecs and it came good immediately. Take a technology that is very very difficult to get right then after spending hundreds of millions of dollars on research and it still not very good, knowing people want to use it simply go ahead and put it on the market. Lead acid comes with different plate compositions that must be considered when measuring SoC by voltage. Hi, I need some help regarding a torch. A battery is made up of an anode, cathode, separator, electrolyte, and two current collectors (positive and negative). The laptop bottom portion gets very hot with or without the battery, when i charge the batteries in the laptop they charge slowly but drains very quickly. Rather than protection circuits, I build a pack with a series of paralelled cells then use a charger that balances the voltage of each paralelled group. I thought I found the ultimate charger until I checked the German manufacturers web site and the batteries that cannot be charged with this unit. How does Internal Resistance affect Performance? The charger might get started once the open circuit voltage falls to 4.05V/cell and switch off yet again at 4.20V/cell. I have four of these 18650's period. 3. I used Fusion to design my Enclosure 3D Printing Files - http://bit.ly/2kXDxIsNote - Please see the images for better understanding A sleeping Li-ion does not reveal the voltage, and boosting must be done with awareness. Another question is, this short circuits bridge forming over time in unused batteries. It did not work. They're usually cheap enough that it's not worth returning them, and if you do, good luck getting your money back. Lithium-ions can deliver massive amounts of Amps. (See also BU-808: How to Prolong Lithium-based Batteries.). The stress level on the battery can be excessive since the cycles take place on the high-voltage limit, and often also at raised temperature. I am just using them for an e-cigarette and using the vape to charge them. and can tell the manufacturer your KNOW they gave you a defective charger. They must have been in storage for a very long time, got them from a friend who didn't want them anymore. In any case, if it gets to 24.5 it will be switched off. Another suggestion was to use a USB cable. The battery could possibly be charged to 4.20V/cell after which discharged through the unit. Just brought two efest 14500 protected batteries back to life. Do not boost lithium-based batteries back to life that have dwelled below 1.5V/cell for a week or longer. I want to use power tools with external batteries, but the three contact tools are designed not to work without input to the central contact. Then move up to 10 seconds once I was sure it wasn't overheating or anything, and wait 10 seconds. 7. First, I've tinted the legs of the power socket and then used some small size wire to connect it Make sure you do this This module has 3 things, to start charging. The charger fails to recognize them. Then i took a multimeter, measured, and it showed 3.2v :). MORE likely is the switch, but easy repair IF you can take it apart. After thawing for about an hour I tried turning it on and was surprised that it started up and the battery was 85%. The voltage slightly climbed. The Cadex analyzer restored 91 percent to a capacity of 80 percent and higher; 30 percent were inactive and needed a boost, and 9 percent were non-serviceable. Several years ago I piurchased a large number of 2 cell packs useing 18650 c ells that had been shelf discharged, many to below .1 volt so none should be restored according to this article but I removed the cells and started charging them at .01c (have since leared that .1c is ok) then at .1c till they reached 4.1 volts or failed to charge. I just had two 18650 cells that would not charge. is because the battery chemistry changes after it's discharged and unused too long, making it dangerous to revive or use. The problem (?) I waited awhile for to cool off and the charger doesn't even recognize there is a battery there. When I got at about 3.7V, the battery suddenly started working again. Now I'm still not sure if I would have just left them in the e-cigarette charging these batteries would have worked in the first place without boosting. I have a Hitachi drill with 10.5V battery (BLC1015). Battery Tender Junior 12V Battery Charger and Maintainer: 800mA 12 Volt Battery Charger for Lead Acid and Lithium Batteries - Switchable Battery Charger for Powersports - 022-0199-DL-WH The Battery Tender Junior 12V Battery Charger and Maintainer is a handy tool to have for any lead acid or lithium battery. Wayne was lucky. Put out with bicarb fire extinguisher. Any ideas what happened and if I can do something to get the battery working again? Thanks. I worked in an electronics store for a few years, and lost count of the number of customer's 'dead' batteries I got working using our 2A bench power supply. If you try to do it yourself, you have to think through all the algorithms, make complicated measurements, and administer the charge, all the while continuing to monitor and measure and make adjustments until either the battery reaches its maximum charge or you determine it is beyond hope. If I unplug the AC and immediately re-plug the battery icon indicates that now the battery is taking a charge. It's easy to think of charging a battery as though you're filling a tub with "power." When recharging, such a cell might become unstable, causing excessive heat or show other anomalies. This appeared to work as well. Batteries 4, 5, 6 show only 0.5 V each. To SANDY above, try switch?? I managed to revive an 18v Li-Ion drill battery sort of like this after it apparently sat discharged in the cold over the winter. The anode and cathode store the Companies of these cells encourage charging with 0.8C or less in order to lengthen battery life; on the other hand, many Power Cells will acquire an increased charge C-rate using minor stress. Universal li-ion chargers give all kinds of pulses to the cell to figure out what kind of voltage and polarity the cell has. I have a weird issue with a protected 14500 battery. About three hours later I took it out. This important safeguard also turns the battery off and makes it unusable if over-discharged. The argument often heard here is that "I read about it working, so I tried it and nothing bad happened. Even when tried to charge it, it was not getting charged. As a rough example, if your battery pack normally lasts, say 10 hours under continuous use, you'll reach 40% of usable capacity after six hours. Worked a treat! Best Wishes, Rick, please my aspire one laptop battery was run down and i try to charge it in the 3rd day but its doesnt charge and the battery is last for upto 4 hours before now its said plugged in, not charging please what can i do to get the battery on back, i have a ipod . I don't have any universal charger or any solution to try to charge it. Hello, My son HP Touchpad was left till it is drained. Why do Different Test Methods Provide Dissimilar Readings? But it cooled off again and when I checked the voltage it was at 3.07v. Teslas iPhone Moment How the Powerwall will Change Global Energy Use, Painting the Battery Green by giving it a Second Life, Charging without Wires A Solution or Laziness, What everyone should know about Battery Chargers, A Look at Cell Formats and how to Build a good Battery, How to make Batteries more Reliable and Longer Lasting, Recognizing Battery Capacity as the Missing Link, Managing Batteries for Warehouse Logistics, How to Make Batteries in Medical Devices More Reliable, Possible Solutions for the Battery Problem on the Boeing 787, Impedance Spectroscopy Checks Battery Capacity in 15 Seconds, Examining Loading Characteristics on Primary and Secondary Batteries, BU-001: Compartir conocimiento sobre bateras, BU-302: Configuraciones de Bateras en Serie y Paralelo, Change-log of Batteries in a Portable World, 4th edition: Chapters 1 - 3, Change-log of Batteries in a Portable World, 4th edition: Chapters 4 - 10. guys can you please help me to restore my fully discharge li ion battery on my laptop,its about 5 months later after i bought it,i frequently using ac connection so the battery i've only used it ones a week,,but now its already fully discharge and i don't how to awaken it..i already put it on my laptop but it;s not charging anymore,,, thanks, That's actually very great what you guys are writing , but actually needs some simplification on what should be done to boost it again on duty ,ya know. Took charge nicely, 10 minutes later, burst into flames, melted nearby equipment, burning plastic released toxic fumes and 4' flames with nasty black sooty smoke. Is there anyway I can fix it? The reason I am here at the moment is my windows tabled with it's 3 cell battery has been in the drawer for 2 years. Have been working on the problem with my laptop battery for nearly a month. Until the new laptop fan came in I made do by sitting the laptop on a makeshift platform with a plastic freezable ice replacement thingy right under the warmest part. I had not thought of the freezer/refrigerator method of restoring charger's function. read again what mad monty wrote above. It was working fine. BU-603: How to Calibrate a Smart Battery, BU-603a: Calibrating SMBus Batteries with Impedance Tracking, BU-604: How to Process Data from a Smart Battery, BU-704a: Shipping Lithium-based Batteries by Air, BU-704e: Battery for Personal and Fleet Use, BU-801: Setting Battery Performance Standards. It's even more safe to wake up more then one cell with one not fully charged healthy cell. Please help. Any help would be greatly appreciated as I cannot return the battery back. If a guy wasn't careful he could learn a lot from you guys. Anyone know how to revive this one? However, all communication must be done with the use of appropriate language and the avoidance of spam and discrimination. Most battery chemistry is NOT reversible (and manufacturers warn you not to try to recharge them as they may burst). if the battery does not spring past 2.5 volts within one minute of trickle-charging, then the battery should be discarded. Copper shunts may have formed inside the cells that can lead to a partial or total electrical short. This is what I am doing. We use 3 LIR2450 coin cells in a portable instrument. Battery University monitors the comments and understands the importance of expressing perspectives and opinions in a shared forum. I must say I'm happy with the results, it's like nothing ever happened to the battery despite having stayed "dead" for at least three weeks. But a few questions are needed. Any Batteries Plus or Batteries Plus Bulbs can recycle them for you. Did not time it so I'm not sure how long. Then Google this article: How to Revive a Cell Phone Battery (with Pictures) - wikiHow It will tell you how you can "boost" the voltage with a 9 volt battery so it will take a charge again - good luck, and get a nerd buddy to help, lol. The charger flashes a green LED while charging and goes steady when charged. I charged the batteries on Sunday and got my vapeing mod on Monday. Or perhaps with fresh instructions. I charge the battery using a 12V DC charger or a 12 V Solar Panel. when fully charged, all three should light up when the indicator switch is depressed. I need help on this one. This assists in easing the voltage stress. All restored packs were returned to service and performed flawlessly. Then recharge it fully with a standard lithium ion battery charger. A parasitic load rattles the charger by suppressing the battery voltage, and blocking the current within the saturation phase to decrease to a point low enough by simply pulling a leakage current. I would be very grateful to have an expert opinion ,because I am done with those videos that never give a solution straight to a person,ya know . Or it doesnt get enaugh juice from the charger to keep it at the 36-37v range ? They also have a Cadex and a laptop battery reconditioner and can restore batteries for you if you ask, usually for free, So you want simple instructions on bringing a Li-ion back to life? As soon as the charge is ended, the battery voltage starts to decline. so do i have to buy new battery pack or is there any way to reactivate the same battery? One at 0 volts. Chargers designed for functional preparedness, or standby mode, frequently allow the battery voltage drop to 4.00V/cell and recharge to solely 4.05V/cell rather than the total 4.20V/cell. I managed to reactivate a flat 18650 lithium ion battery that had been left in a discharged state for several months. This can awake your battery. I plan to 'camp out" in here again, lol. I purchased another replacement and has the same issue with it, so not sure if there is something is needed to be done to activate the circuit, or am I done and should get my son another tablet. Some use here really wrong words! I have a replacement Li-Ion battery for a Toshiba laptop. Then i continued to apply charging for another 2mins and got the battery up to 3.48v. I left them to charge for a couple minutes. Is there a way to prolong their life or somehow bring them closer to how thwy originally worked? Boost applies a small charge current to activate the protection circuit and if a correct cell voltage can be reached, the charger starts a normal charge. In "1C", "C" refers to the AH or the mAH value of the battery, meaning if the Li-ion cell is rated at 2600mAH then the "C" value becomes 2600, or 2.6 Amps, which implies that it can be charged at its full 1C, or at 2.6 amps if required. Recently I am getting field complaints that batteries which go to sleep would not revive using the software charger. New - never used. my li-ion mobile battery 2500mah , working well upto 50% ,after sudden drain and directly come to 11%,, only 3 months completed (buying), anyone give solution???? The vape said check battery. I have subsequently been told that I need to run the battery down to 15% or so which I've done a couple of times now. Another 40 mins's and I removed the batteries and tested with a meter and I have 3.7 volts on each battery. A real eye opener, especially as it cannot charge the 18650 batteries that I have a problem with. Remember that a Li-ion battery I expect them to be less than the other six cells, but t is possible that they may still have decent capacity for a flashlight. I looked over the circuit board and found nothing damaged. After 8 to 15 minutes, I might get one light. BU-304: Why are Protection Circuits Needed? Only those who can tolerate a brief explanation should read further. The battery is very slowly coming up from 0v and is now sitting at 1.8v and slowly climbing. We recommend posting your question in the comment sections for the Battery University Group (BUG) to share. Does anyone have a working battery for a schwinn Transit bicycle i can buy? You should stop using the charger and/or battery in the event the battery starts becoming too much warm. He is the one I go to for questions and to build my coils and stuff. It took me about 3 minutes to fish it out. My question is: Is the battery still good? http://accumate.co.uk/optimate lithium 0.8.htm Can you confirm it to me ? Some alternative chargers set a lower charge voltage limit deliberately to extend battery-life. A partially charged battery being plugged in can result in the cutoff being low enough to damage the battery. I just waked to life two 18650 batteries that came from a dead laptop battery I opened, the battery had 8 cells, four was complete dead, two was good and two had around 2V.