Posts Tagged: Electronic Devices

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10
Apr 11

18650 Holder: The New Generation Of Holders And Chargers

Since more and more people buy lithium-ion batteries mostly because of their durability and additional safety measures included, there are also other accessories needed, such as 18650 holder, charger and even case practical for everyone to carry the batteries around. The 18650 holder is designed to hold the batteries inside the electronic devices. Sometimes they can be even confused with the chargers, but the difference is obvious, mostly by the performances. The 18650 holder can be made for one, up to four batteries, and it usually has build-in protection circuit module. Some important features of this product, model 18650-4S1P-14.4V made by SmarTEC are:

  • Charging voltage DC 16.8 V
  • The Maximal continuous Charging current is 4A
  • In case of overcharge, the detection voltage is 4.325±0.025V
  • Over discharge detection voltage is 2.4±0.08V
  • Detection delay time 200-500us
  • Protection circuitry ≤60mΩ
  • Operating temperature range -40+85

When it comes to 18650 holder, the most important thing is the safety, and this holder can make it happen. On the other side, the user should not mis-handle the holder, because in the case of wrong polarity placement, can happen an accident while charging the battery.

Just like 18650 holder, the right charger must be provided in order to keep the batteries durable and safe for the users. Charging the lithium battery might not be a hard job, but it must be done properly. The type of charger plays the biggest part and the brand, as well. The most popular and best-selling chargers are made by Ultrafire, Tenergy and Trustfire. The best-selling product is for sure the UltraFire 18650 3000mAh 3.7V Rechargeable Li-Ion Battery (Pair) + Charger Combo, partly because of the perfect combination for an affordable price, and partly because of the great performances. The features of this product are:

  • It can charge two batteries simultaneously,
  • Has an indication light that shows when charge is complete,
  • High safety of battery charging,
  • Input voltage is 110-240V, 47-63Hz,
  • Output is 4.2V 600mA,
  • Its dimensions are 3.34 in x 1.85 in x 1.49 in,
  • It has overcharge and discharge protection,
  • Protection available at 2.75v and 4.2v,

On the other side, the best Tenergy charger is type Multifunctional Charger for Li-ion Cylindrical Rechargeable Batteries (14500, 18500, 18650, RCR123A). Its greatest benefit is the fact that it can be used for many battery types and it has contrary polarity protection and distinguish from batteries. The customers say that its only downside is that is can used only for charging Tenergy batteries. It is also said to be a bit slow, but it is understandable, because it can charge different types of batteries. Also, it is said that the slower chargers can make the battery last longer.

The Trustfire 2500mAh 3.7V IC Protected 18650 Rechargeable Li-Ion Battery (One) + Charger Combo is also one more combination of the battery and charger. This charger is also multifunctional, since it can also charge Ni-Mh AA, AAA, C, D, 9V batteries. The customers are also very satisfied with this product, mostly with the performance and the price, as well.

The price is not everything. No one want to get the cheap 18650 holder or charger and then use it for a couple of days only or completely destroy the battery itself. Safety is the most important thing, and when it comes to charger, anything could happen if someone uses it in the wrong way. That’s why the more expensive products and known brands are better choice for everyone, because they provide reverse polarity protection, overcharge and discharge protection, and make the device and batteries last longer.

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10
Apr 11

The Best Rated Li Ion 18650 Batteries

There was a time when there was no concept of being able to move electronic devices from one place to another. However, ever since the introduction of batteries, the portability of many devices has increased to a greater extent. Take the example of telecommunications. With the introduction of cell phones and their increased portability, communication has become so much easier. And to a greater extent, that evolution has been accredited to the fact that cell phones come with a rechargeable battery that makes their portability much easier. With batteries becoming rechargeable and smaller, the devices have become easier to carry and maneuver.

When it comes to rechargeable batteries, there are a few types that are available to people. Among these, the most in-demand batteries are Lithium-ion or Li-ion batteries and the alkaline batteries. Since the two have been in equal demand on sites such as amazon.com where many of their brands are on the bestsellers’ list, it is imperative to know how they differ from each other. Moreover, it will also help in determining which one is better than the other.

Li-ion 18650 batteries

The Li-ion 18650 batteries are considered to be one of the best options in terms of rechargeable batteries. Their usage is in many electronic devices and with their growing popularity; people are now showing more interest in learning about the best rated Li-ion 18650 batteries. Four types of this battery have been produced. These include:

-          18650 cylindrical (small) – With its solid body and sans terminal, this Li-ion battery does not have any terminals. Its usage is mostly found in electronic devices such as 18650 flashlight, some models of cell phone, laptops and digital cameras. Rechargeable Ultrafire 18650 batteries, AW 18650 battery and Tenergy batteries are some of its popular brands.

-          18650 cylindrical (big) – Comprising a firm body, this type of Li-ion batteries have big terminals that are wired. Mostly it is found in the brands that are imported from China.

-          18650 pouch – It has a softer body and a flat surface, with its usage mostly found in cell phones. Most popular brands include Sanyo, LG and Sony.

-          Prismatic – Much like the large cylindrical batteries, these too have wired terminals. It comprises a relatively soft case.

Besides their ability to be charged over and over again, Li-ion batteries also offer a lot of other benefits. Their easy availability in different sizes and shapes makes them flexible to be used in a variety of devices. They are lighter in weight and discharge less fluid than other batteries. Additionally, their usage is found to be safe for the environment.

Alkaline battery:

Although they initially came with no option to recharge them, the alkaline batteries now also come with the option of recharging them. They are known to retain the charged energy for a long time.

They have a huge disadvantage, however, due to the increased resistance internally, reducing the life of the gadget they are used in. In gadgets which need higher current to start, these batteries normally encounter failure. In its rechargeable form, it is worse in performing than the conventional alkaline battery that was introduced initially.

Li-ion 18650 Is A Better Choice

It is easy to conclude from the descriptions above that although alkaline batteries introduced their rechargeable version following the cue of Li-ion 18650 batteries, they just failed in the attempt. Before making the purchase of even the best rated Li-ion 18650 batteries, it is important to determine the purpose you need them for. A person who wants to buy them should always choose the one with self-discharge. The best rated Li-ion 18650 batteries may cost a bit more, but they also come with assurance of much higher performance than any other battery.

Many Li-ion 18650 brands are available in the market and online, including rechargeable Ultrafire 18650 batteries, LG, AW 18650 battery and Tenergy. The best rated Li-ion 18650 batteries in the U.S. currently are:

1.      Tenergy – They are given five-star ratings by the users on amazon.com due to their ability to gain completely positive reviews. Customers have shown appreciation that it does not overheat too fast and is very device-friendly.

2.      Obtronic – Another one to gain full points, it is the best in terms of energy density.

3.      LG - With their amazing energy density and for optimum electrode result, these were also able to garner five-star appreciation from the customers. They are used in 18650 flashlight, video camera and mp3 player.

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10
Apr 11

Icr18650 Batteries: All The Info

The lithium-ion batteries are very popular today and they can be found in many electronic devices, such as telephones, laptops, flashlights, etc. Their format can be different as well, so there are small cylindrical, large cylindrical, pouch or prismatic. When it comes to this specific category icr18650, these are not just the batteries, but the holders, charges, flashlights as well.  There are many types and brands you can choose from, but all depends on the performances you expect and the price you want to pay. Some of the most important brands of icr18650 batteries are Sanyo, Tenergy, LG, Samsung, Ultrafire with the wide range of products of this kind, but the bestselling are batteries with the power of 3.7V and 2600 mAh.

All of the icr18650 batteries, not just the batteries have a lot of benefits, that’s why they are so popular, and some of the things that people love about them, the most are:

  • The icr18650 batteries are mush efficient and last much longer than any other types,
  • There are so many shapes and sizes you can choose from, meaning that they can fit any electronic device,
  • They are not heavy like many secondary batteries,
  • On e thing that people love the most is that those batteries are rechargeable, so it is not necessary to buy another one when it’s empty,
  • Their self discharge rate is approximately 5-10% per month comparing to 30% of nickel metal hybrid batteries,
  • The components are environment friendly since there is no free lithium metal,
  • There is additional equipment such as holder or charger that provide a full performance of a battery.

Just like with any other product, it is important to know what exactly to look for in order to get the best product. When it comes to lithium-ion batteries, the most important is to know that they are safe for use, that they are simple enough for everyone, and that they can last longer than any other products of the kind. The expiration date is something that people usually connect with the food, but the batteries also have their durability and it not recommended to buy one if it’s expiration date is close. Those can be reasons enough to buy more expensive ones. The higher  price usually can guarantee the durability and safety, and when it’s about rechargeable batteries icr18650, it is possible to find all the features needed in just one product.

The three bestselling icr18650 products are actually batteries made by Tenergy, US company in the middle of the Silicon Valley. Buying not just one but 4 or 6 pieces can save the money and provide the quality at the same time. The Tenergy icr18650 batteries have those desirable features:

  • The nominal capacity is 2600 mAh, but the minimum needed 2450 mAh,
  • The nominal voltage is 3.7V but the cut-off voltage is 3.0V
  • Internal PCB protection with prevents the under- and over-voltage,
  • The energy density is much higher comparing to other batteries and they don’t weight too much,
  • Their dimensions are Diameter 18+/-0.2 mm, Height 66+/- 0.2mm,
  • The cycle life is 500 cycles,
  • The charge – Current = 0.5C mA Voltage = 4.2 V End Current = 0.01 mA, Discharge: Current = 0.5C mA End Voltage = 3.0V,
  • Must be taken care of very well since they can explode if mis-handled.

When it comes to bestselling brands of the icr18650 batteries, the top three companies are Tenergy, LG and Samsung. The features of their batteries are pretty similar, as well as the prices. The only thing different is that the Tenergy batteries have the PCB protection unlike the others two, and the LG and Samsung emphasize the safety of the batteries since they are Free from Leakage of Liquid Electrolyte.

The customers just love that batteries, and they usually use them for flashlights. They are highly recommended from most of the customers, especially because they have the PCB protection that seems to be needed all the time. The only disadvantage is that it takes about 12 hours to charge those batteries, but it’s not bad comparing to all the benefits.

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