Articles by "Battery"

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Showing posts with label Battery. Show all posts

Smartphones with longer battery life in the offing
Common lithium-ion batteries only have a certain capacity," said Kyeongjae Cho, a professor at The University of Texas at Dallas in the US. "And most people want to use their phones for a longer time," said Cho. Many smartphone users are familiar with the shelf life of lithium-ion batteries.
Sometimes a charge can last roughly a day. Cho, along with research associate Jeongwoon Hwang, worked with other regional scientists to improve lithium-sulphur batteries, long considered by many to be an evolution from lithium-ion batteries. Lithium-sulphur batteries have important advantages over lithium-ion batteries. According to Cho, they are less expensive to make, weigh less, store almost twice the energy of lithium-ion batteries and are better for the environment.
"A lithium-sulphur battery is what most of the research community thinks is the next generation of battery," Cho said. "It has a capacity of about three to five times higher than lithium-ion batteries, meaning if you are used to a phone lasting for three hours, you can use it for nine to 15 hours with a lithium-sulphur battery," he said. However, lithium-sulphur batteries are not without problems. Sulphur is a poor electrical conductor and can become unstable over just several charge-and-recharge cycles.
Electrodes breaking down is another reason lithium-sulphur batteries are not mainstream. Scientists have tried to improve lithium-sulphur batteries by putting lithium metal on one electrode and sulphur on the other. However, lithium metal often is too unstable, and sulphur too insulating. The scientists discovered a technology that produced a sulphur-carbon nanotube substance that created more conductivity on one electrode, and a nanomaterial coating to create stability for the other.
The researchers discovered that molybdenum, a metallic element often used to strengthen and harden steel, creates a material that adjusts the thickness of the coating when combined with two atoms of sulphur, a coating thinner than the silk of a spider-web. They found it improved stability and compensated for poor conductivity of sulphur, thus allowing for greater power density and making lithium-sulphur batteries more commercially viable.

Aqueous Hybrid Battery WIll Now Charge Your Mobile In 30 Seconds!
The issue of the battery is still one of the most mysterious and unsolved problems of the modern era. Lithium-based batteries, which we are currently using, have reached an almost saturation point, where it cannot be improved. However, alternatives are being developed, which can solve the power problem, and some interesting developments have taken place.
Korean scientists have now developed a hybrid, aqueous battery, which has been claimed to charge a battery within 30 seconds. How is it possible? We will soon explore.
Recharge Your Mobile in 30 Seconds! This actually seems too good to be true: Imagine a new, non-lithium based battery, which takes just 30 seconds to fully recharge. Not only your mobile but also your laptops, tablets and other gadgets can actually transform. Scientists from Korean Advanced Institute of Science and Technology (KAIST) have successfully demonstrated that this is indeed possible.
In their research paper titled: “Synthesis of Pseudocapacitive Polymer Chain Anode and Subnanoscale Metal Oxide Cathode for Aqueous Hybrid Capacitors Enabling High Energy and Power Densities along with Long Cycle Life”, Korean scientists Il Woo Ock, Jae Won Choi, Hyung Mo Jeong and Jeung Ku Kang have proved its existence. As per the findings, the new form of battery is safe, stable, consistent, and boasts of ‘high energy and power densities’, which actually allows them to be recharged in as less as 20 seconds! Jeung Ku Kang, a co-author of this study, said,
“This eco-friendly technology can be easily manufactured and is highly applicable. In particular, its high capacity and high stability, compared to existing technologies, could contribute to the commercialization of aqueous capacitors. The device can be rapidly charged using a low-power charging system, and thus can be applied to portable electronic devices.”
How Does The Aqueous Hybrid Battery Work? Same old’ cathode and anode are no doubt used but in a new, revolutionary way. A new form of a liquid electrolyte has been developed, which is sandwiched between a specially-designed anode and cathode. While the anode is made of polymer chain materials based on graphene, which gives it a high surface area, and thus capability to store more energy.
A cathode, on the other hand, is made from nickel oxide nanoparticles embedded in graphene. The molecular structure of these materials has produced a new form of storage mechanism, which has higher energy density and faster energy exchange. And, the important part: Energy loss. Experiments have shown that this hybrid battery has near-zero energy loss, maintaining their capacity at 100% over 100,000 redox cycles.
In short, the new battery is over 100 times more powerful than traditional lithium-based batteries, which are currently in use. Now, it would be interesting to observe how soon can this battery be commercially launched, and how soon can it improve the current power woes.

Samsung Galaxy S9 battery details leaked, 'S9 Active' likely underworks
It looks like leaks and rumours will leave nothing to our imagination by the time Samsung launches its Galaxy S9 smartphone(s). After several leaks about processor and screen details, and renders showing the handset's design, a new report now talks about the handset's battery capacity. A separate report also talks about the rumoured Galaxy S9 'Active' variant.
Starting with the Galaxy S9, one of the smartphone repair components wholesaler named Union Repair seems to have jumped the gun and has revealed the battery sizes of the handset. The wholesaler, on its website, lists battery replacement for the Galaxy S9 and the Galaxy S9 Plus. According to the listing, the S9 is supposed to feature 3000mAh battery, while its big screen variant is said to sport 3500mAh battery.
To several Samsung fans this may not sound convincing enough as the battery capacity mentioned for the Galaxy S9 is exactly the same as that in the Galaxy S8. The S9 Plus' battery capacity is 200mAh more than that of the S8 Plus. But it still remains less than Galaxy S7 Edge's 3600mAh battery. However, despite sporting a similar battery capacity, the performance might be better as the handset is said to sport much powerful and efficient processor. We can only know once we review the smartphone and if the aforementioned claim by the Union Repair website holds some weight.
The South Korean tech firm's flagship smartphone is expected to see the light of the day on February 25. Some of the rumoured specifications of the handset include Qualcomm Snapdragon 845 processor, 6GB RAM, dual rear cameras and nearly the same design sans the placement of the fingerprint sensor. Since the launch of the S9 and the S9+ is by end of this month, we are likely to see them hitting the shelves initially by March.
Samsung Galaxy S9 'Active' rumours hit the web Now that we are sure of the Galaxy S9 smartphones coming out within next four weeks, fresh reports have started pointing out attention towards their 'Active' variant. For those unaware, the particular version essentially is the same regular model but with a rugged look.
XDA Developers have obtained a list that shows the codenamed of the Galaxy S9 devices. While the list mentions 'star' and 'star2' which are said to be the codenames of the two Galaxy S9 handsets, the third 'astarqlte' codename could be that of the 'Active' variant. The 'a' here may mean Active, while 'q' and 'lte' could mean it may sport a Qualcomm processor along with LTE connectivity.

जानें क्या है मोबाइल बैटरी कैलिब्रेशन और क्यों है जरूरी what is mobile battery calibration and how to calibrate
आप जिस ​चीज का उपयोग कर रहे हैं उसके बारे में बहुत ज्यादा न सही पर थोड़ी बहुत जानकारी होनी जरूरी है। यदि कार चला रहे हैं तो कार के पार्ट्स और उसका उपयोग। वहीं मोबाइल का उपयोग कर रहे हैं तो मोबाइल के पार्ट्स और उसका उपयोग। मैं यह नहीं कह रहा कि आाप मोबाइल को खुद ही खोल दें और ठीक कर लें बल्कि यहां इस ​चीज का जिक्र करने का आशय यह है कि थोड़ी बहुत परेशानी हो तो उसे आप खुद से निबटा दें न कि हरेक चीज के लिए सर्विस सेंटर के भरोसे रहें। आगे मैं जो जानकारी देने जा रहा हूं वह भी बेहद जरूरी है।
आज मोबाइल में सबसे ज्यादा लोग बैटरी से परेशान होते हैं। परंतु एक ऐसा सेक्शन है जिसे काफी हद तक आप खुद ही ठीक कर सकते हैं। आपका फोन नया हो या पुराना जब आप उसे लगातार 40-50 बार चार्ज कर लेते हैं तो आपको महसूस होता होगा कि इसके परफॉर्मेंस में कहीं न कहीं समस्या हो रही है। जिस तरह का बैटरी बैकअप देता था वैसा नहीं रहा। पंरतु आपको बता दूं कि इस समस्या को आप चुटकियों में निपटा सकते हैं। बस एक बार आपको बैटरी को कैलि​ब्रेट करना है। इसके बाद फिर से वही परफॉर्मेंस मिलेगा।
क्या है बैटरी कैलिब्रेशन
जैसा कि आप जानते हैं जब आप किसी भी रिचार्जेबल बैटरी का उपयोग करते हैं तो उसमे कई प्रकार के वेरियेशन मिलते हैं। कभी वह बहुत अच्छा कार्य करता है, कभी गर्म होता है तो कभी जल्दी चार्ज नहीं होता। हर बैटरी के साथ अलग तरह की परेशानी देखने को मिलती है। परंतु एक बात हो सब पर लागू होती है वो यह कि पहले दिन जैसे ही आप उसका उपयोग करना शुरू करते हैं वह वैसे ही अपनी क्षमता खोना शुरू कर देती है। जितना उपयोग करेंगे वह उतना कमजोर होता जाता है। क्षमता खोने की यह दर बैटरी की प्रकार पर निर्भर करता है लेकिन खोता जरूर है। बैटरी जब कमजोर हो जाती है तो चार्ज करने पर थोड़े समय में ही 100 फीसदी दिखाती है तो कभी थोड़े समय में ही बैटरी खत्म हो जाती है। यह वास्तिविक स्थिति नहीं बताती।

ऐसे में बैटरी कैलिब्रेशन एक ऐसा माध्यम से है जिससे कि आप बैटरी परफॉर्मेंस को पहले की तरह नए जैसा पा सकते हैं। या यूं कहें कि एंडरॉयड स्मार्टफोन में बैटरी को ​रिफ्रेश करने का यह तरीका है जिससे कि यह अपना पुराना परफॉर्मेंस पा सके। कैलिब्रेशन के बाद आपको चार्जिंग की सही जानकारी मिलेगी भी मिलेगी।

कैसे करें अपने फोन की बैटरी को कैलिब्रेट
एंडरॉयड स्मार्टफोन की बैटरी को कैलिब्रेट करने के लिए आपको अलग से किसी सॉफ्टवेयर की जरूरत नहीं है और नहीं इसे खोलना है। इसके लिए सबसे पहले

1. आपको अपने फोन को पूरी तरह से आॅफ होने देना है। खुद से आॅफ करना नहीं है बल्कि बैटरी 0 फीसदी हो कर जब बंद हो जाए तब तक उपयोग करना है।

2. इसके बाद इसे फिर से आॅन करना है। डिस्चार्ज होने के बाद भी थोड़ी पावर रिजर्व रहती है इसलिए फिर से उसे आॅन करें और ​​खुद से आॅफ होने दें।

3. अब आपको फोन बैटरी को 100 फीसदी तक चार्ज करना है और इस दौरान याद रहे कि चार्जर हटना नहीं चाहिए।

4. एक बार जब पूरी तरह से फोन चार्ज हो जाए तो उसे आॅन करें और फिर से चार्ज करें।

5. जब 100 फीसदी दिखा दे तो आॅफ कर आॅन करना है और फिर एक चार्ज करना है। रीस्टार्ट की प्रक्रिया को दो तीन बार करनी है। यही होता है कैलिब्रेशन। अब आप अपने फोन का उपयोग कर सकते हैं।

कब करें बैटरी कैलिब्रेशन
ध्यान रहे कि लीथियम आयन बैटरी यदि बार—बार डिस्चार्ज हो तो उससे परफॉर्मेंस पर भी फर्क पड़ता है बार-बार उसे डिस्चार्ज नहीं होना चा​हिए। बैटरी कैलिब्रेशन यदि आप 40-50 दिनों में करते हैं तो बेहतर है

Top Ways to Extend Your iPad’s Battery LifeEven though I don’t use my iPad nearly as much as I did a few years back, it’s still comes in handy on long trips or when I need to distract my kids for a little while. The longer the device can last, the better for me. Apple has a specific time duration that each iPad model should last based on regular usage, but actually reaching that value is quite a task.
The reason behind the disconnect is the software. Even though Apple creates great hardware, their software is sorely lacking. iOS, in my opinion, has been getting buggier and slower in each new version. It’s amazing to me that my 64 GB iPhone is constantly running out of space even though I’m using iCloud for storing everything.
In addition, there are a whole bunch of iPad models out there right now all with different versions of iOS installed, which is problematic. My iPad Air 2 can be updated to iOS 10, but my iPad 2 can only be updated to iOS 9 and will probably be stuck there forever.
In this post, I’ll list out as many ways I know possible to improve the battery life of your iPad by adjusting settings in iOS. I’ll try to make a note if the feature is not available in an older version of iOS.

Method 1 – Adjust Auto Brightness

Obviously, while you are using your iPad, the screen itself will be the biggest drain on the battery. There is no reason to keep it at full brightness all the time. I have seen a lot of people do this and I’m not sure why!
Firstly, it just hurts my eyes to have the screen so bright in a dimly lit area. By default, the screen should adjust automatically, but I have found that a lot of times it’s brighter than I need. Just swipe up from the bottom of the screen and you’ll see the brightness slider at the top right.

Method 2 – Disable Bluetooth & Cellular

Unless you are using the Bluetooth connection on your iPad, you should leave it turned off to save battery life. In addition, if you have a cellular iPad, make sure to keep it disabled unless you are using cellular exclusively.
Even if you are connected to WiFi, it’s still a good idea to turn off the cellular connection because the iPad will constantly try to find the best cellular connection in the background, which will take a toll on the battery.

Method 3 – Turn Off Background App Refresh

Just about every app you install onto your iPad will have an option for refreshing their content in the background. This can be pretty useful for some apps that you use often, but otherwise, it’s just a battery drain.
I normally keep it enabled for a few apps where I want up-to-date info when I open the app, but disable it for the rest.
The more apps you can turn background refresh off for, the longer your battery will last before you have to charge it again. Personally, I’ve tried disabling it completely and haven’t really seen any downside whatsoever.

Method 4 – Reduce Auto Lock Time

I normally make it a point to turn off the screen on my iPad when I am done using it, but the same isn’t true for my kids. I’ve seen the iPad laying around somewhere with the screen on and no one around.
The lowest setting as of now is two minutes, which still seems long to me. The iPad remains on if you are using it actively like while watching a video, regardless of the auto lock time. However, if you do a lot of reading on your iPad, the lower auto-lock setting will probably annoy you because it will dim and then lock the iPad right in the middle of an article. Basically, try to keep it as low as you can without it being inconvenient.

Method 5 – Disable Location Services

As with background app refresh, there are a lot of apps that use your location even when the app is not running. You can find the location settings for each app under Privacy – Location Services.
Here you can choose the appropriate setting for each app individually. I suggest doing this because some apps really can’t work unless location services are enabled. However, other apps don’t really need to know your location ever. Try to set as many as you can to Never or While UsingAlways is bad because the app will constantly lookup your location in the background.
Some apps are annoying and only give you the option of Never and Always. In these cases, it might be worth trying to find a replacement app that has the third option as well.

Method 6 – Enable Do Not Disturb

My favorite power-saving tip is to use the Do Not Disturb feature. Since my iPad is a secondary device, I don’t really care if FaceTime calls or notifications are hidden until I turn on the iPad manually.
I just set it to Manual and then leave it in Do Not Disturb mode all the time, day or night. This allows my iPad to last in Standby mode for weeks on end. Since all the notifications are hidden, the screen doesn’t keep lighting up for each notification, thereby saving a lot of the battery.

Method 7 – Disable Push in Mail

If you have a lot of email accounts setup on your iPad, the constant pushing of email to your iPad will cause your battery to drain much faster. If you already have email setup on your phone or a primary device and the iPad is just a secondary device, I suggest turning off Push for each account and fetching the mail manually at longer intervals.
Normally, I set fetch to hourly as there is no real urgency to load my mail on the iPad. If you really want to save battery, set it to manually. This way, it’ll only check for mail when you open the mail app.

Method 8 – Check Battery Usage

Lastly, you can go to Battery under Settings and see which apps are eating up the most battery over a 24 hour or seven-day period. If you notice anything unusual here, you should check the settings for the app or remove it entirely.
Using all of these tricks, my iPad normally only needs to be charged once or twice a month unless I use it heavily on a day to watch a movie or videos. It’s also a good idea to keep your iPad up-to-date, even though this doesn’t necessarily mean you’ll get better battery life. If you have any other tips, post them in the comments. Enjoy!

Satish Kumar

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