The 20th national electrochemical meeting

    The 20th national electrochemical meeting was held on 25th-28th Oct. 2019 in Hunan International Convention and Exhibition Center.NEWARE attended the meeting as one of the sponsor,People packed in frond of our booth,they are interested in our new product:High-low temperature test chamber、Constant temperature test chamber、Explosion-proof chamber...

 

Read more ...

The 20th national electrochemical meeting (2)

    The 20th national electrochemical meeting was held on 25th-28th Oct. 2019 in Hunan International Convention and Exhibition Center.NEWARE attended the meeting as one of the sponsor,People packed in frond of our booth,they are interested in our new product:High-low temperature test chamber、Constant temperature test chamber、Explosion-proof chamber...

 

Read more ...

How can we extend the life of our batteries?

There are several things you can do to help your Li-Ion batteries last as long as possible before needing to replace them. Some are easy, some are quite inconvenient. Some have a big effect, some very little. But doing any of them can help slow down the aging and degradation of your batteries.

Temperature

  • Don't overheat them. High temperatures are the biggest cause of battery damage and reduced battery life. Anything over about 45°C/113°F, what most would call warm, and your batteries start aging faster. The more time they spend being warm or hot, and the hotter they get, the more damage you're causing.
  • Don't use them when they're very cold, below -20°C/-4°F. The chemical reactions in a battery are a lot less efficient at low temperatures leading to poor performance. The sudden heating of the battery if used when cold can cause localized internal heating, possibly damaging the battery.


Discharging

  • After using your battery, let it cool to room temperature before charging it.
  • Don't overdischarge them. Our batteries are rated down to 2.5V or lower but you can extend their life by staying above 2.8V-3.0V***. Going below 2.0V or so leads to metal being plated inside different parts of the battery, eventually causing an internal short circuit and possible bursting of the battery.
  • If you accidentally overdischarge your battery below 2.0V immediately recharge it at the slowest rate your charger supports. Once the battery rises up over 3.0V or so you can switch to your normal charge rate.
  • If battery has been at 2.0V for a while then it's probably damaged. It's not worth trying to use the "recovery" mode of your charger (if it has it) because the damage can lead to an internal short circuit later.
  • Li-Ion batteries do not need to be discharged occasionally all the way down in order to keep them in top condition. Li-Ion batteries do not suffer from "memory". This is only needed for NiCd (nickel-cadmium) or NiMH (nickel metal hydride) batteries.
  • Partial discharging and recharging multiple times is better for long battery life than discharging all the way down to where the mod indicates "low battery" and then recharging.


Charging

  • After charging, let your battery cool to room temperature before using it.
  • Don't charge a battery that is below 0°C/32°F. It causes metal to be plated inside the battery eventually leading to an internal short circuit and possibly bursting of the battery.
  • Where possible, setting your charger to 4.1V will reduce stress on the battery and extend its life. But you will lose 10%-15% of the capacity of the battery.
  • Make sure the charger you use turns off once the charge is complete. Check the instructions for the charger you want to use.
  • Never use a trickle charger with Li-Ion batteries! The continuous holding of the battery at the trickle charge voltage damages it.
  • Don't overcharge them. To get the longest running possible time from a battery some chargers go up to as high as 4.27V. While this does result in a bit more vaping time before needing to recharge, it damages the battery. Most of the batteries we use are rated at up to 4.25V but even this is quite high. It's not dangerous until we're approaching 5V but battery damage starts occurring way below this.
  • Without a separate meter monitoring the battery's highest voltage before the charger stops it's hard to know what our batteries are actually being charged to. Our best option is to have our batteries spend as little time as possible fully charged and charge them just before using them. This usually isn't very convenient but it does extend battery life.
  • Charging at a slower rate is better, to a point. Most of our 18650 batteries have a "standard" charge rate of 1.0A-1.5A and a "rapid" charge rate of up to 4A. Charging at 0.5A might help extend the life of your batteries a bit but if the batteries are not getting warm at 1.0A then that's a good compromise between battery life and convenience. Going down to 0.375A or 0.25A won't help much versus charging at 0.5A.
  • Charge 18350's at 0.5A until you know that they aren't getting more than a bit warm.
  • Charge 26650's at 1.0A until you know that they aren't getting more than a bit warm. The better 26650's can be charged at up 2.0A without adversely affecting battery life.


Miscellaneous

  • Storing batteries in the refrigerator doesn't make much of a difference in battery life unless you live in an area with high temperatures year around. It's not dangerous to refrigerate them but be sure to let them come to room temperature before opening whatever airtight wrapping/container you have them in.
  • If a battery wrap becomes damaged, replace it immediately. Replace the top insulator ring if it's also damaged.
  • Every time you buy batteries also buy battery boxes or sleeves, wraps, and top insulator rings. You...will...need...them.


Additional Information

***This is the resting voltage, NOT the voltage "under load" that the battery drops to when being used. If your mod stops firing when the battery drops to 3.2V the battery can rise back to to 3.5V or even higher after resting for a while. This "resting voltage" is the important voltage, the one to be used when determining how low you are really discharging your batteries.

While stopping at 3.4V, 3.6V, or even higher might extend battery life a bit you are missing out on a lot of additional vaping time that you could use before needing to recharge. That additional vaping time can be enjoyed every day for, at most, just the cost of one extra set of batteries a year. Stopping at these higher voltages won't hurt the battery though. Just let the batteries sit for an hour before charging to see what their true resting voltage is when deciding how low you want their voltage to go in your mod.

 

 

source:https://www.e-cigarette-forum.com/blog-entry/how-can-we-extend-the-life-of-our-batteries.7584/

Neware is going to attend the the 20th national electrochemical meeting


Neware is going to attend the the 20th national electrochemical meeting which is sponsored by Professional Board of Chinese Society of Electrochemistry, hosted by Central South University, and co-organized by Hunan University, Xiangtan University and Changsha University of Science & Technology, will be held in Changsha from October 25th to 28th, 2019. The theme of this conference is 'Electrochemistry promotes industrial development'.

The National Electrochemical Meeting, held every two years, is the largest and most influential exchange platform of electrochemistry in China. Focused on the fundamental, application, and cutting-edge problems in the development of electrochemistry science and technology, this meeting will comprehensively exhibit the latest research progress in the field of electrochemistry in China and deeply explore the opportunities, challenges and the future directions of development in electrochemistry. This conference aims to boost the development and progress of electrochemistry in China and strengthen research cooperation and transfer of technology, thereby advancing the application of electrochemistry science and technology in energy, environment, materials and other important fields and realizing the sustainable development of the human society. 

The conference will set up a variety of symposiums around the theme of the conference, including basic theory and methods, nanomaterial electrochemistry, lithium (sodium) ion batteries, next-generation batteries, flow batteries, fuel cells, supercapacitors, electrocatalysis, electroanalysis and bioelectrochemistry, solar cells and photoelectrochemistry, resources and environmental electrochemical, organic and industrial electrification, together with more than ten parallel theme sessions and four special forums, such as the Electrochemical Education Teaching Forum, the Young Scientists Forum, the Electrochemical Industry Forum, and the International Electrochemical Forum (English). The communication forms include plenary lecture, parallel session keynote speech, invited talk, oral presentation and poster presentation. There are also exhibitions of products and instruments as well as seminars on new technologies of electrochemical instruments. Now we are accepting academic papers from the electrochemists and you're welcome to make your scientific contributions. We warmly welcome colleagues from industry and academia, from China and from abroad to attend this conference.

Welcome you to our booth: B06

The 21th Batteries Event 2019 will be held in Nice, France

 

The 21th Batteries Event 2019 will be held in Nice, France

 There will be an important conference held in Nice, France-22-24/10/2019  


 

21 years ago, we launched Batteries 1999, a conference on Batteries. On that time, Nokia 3310 and StarTac phone was the best seller.  

What happened in the last 20 yearsThe Li-ion battery market increase from 2 GWh to almost 200 GWh! 

 

For 20 years, the Batteries event has remained one of the World’s most attractive event and the meeting place for technologies (lead acid, NiMH, Li-ion, Post Li-ion), applications (from micro batteries to large format batteries) and the value chain (raw material suppliers, components manufacturers and so on). Batteries 2019 will focus on battery market issues, future trends, and will allow you to meet new partners and customers! Batteries 2019 will focus on battery market issues, future trends, and will allow you to meet new partners and customers!

 

International battery industry key players such as manufacturers, end users, experts, researchers and recyclers will come together to discuss and exchange on existing recycling technologies, life cycles, secondary raw material use, producer regulatory obligations in Europe, future expectations and innovations.

 

Read more ...