Differences between lithium polymer battery and li-ion battery

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Which one do you prefer? Lithium polymer battery or li-ion battery?

With the fast development of digital and electronics industry, the batteries used for them are drawing more and more attentions from designers and engineers. Two of the most popular batteries are lithium polymer battery and li-ion battery.

Lithium polymer battery

Lithium polymer battery

li-ion battery

li-ion battery

What’s the difference between them?

Lithium polymer battery uses solid electrolytes and soft aluminum foil packing; this feature makes it have great flexible shapes, light weight, high capacity, it can have 50% more capacity than aluminum case li ion battery with the same size. What’s more, its more safe, even the battery get problem like short-circuit under proper use, it will always just swear to bigger size and become fat, the pressure will be released, hence, no explosion will happen.

Li-ion battery, generally speaking, there are two types; cylindrical and prismatic shape li-ion batteries. They are made with aluminum or steel case, this packing protects them from being broken by sharp or hard objects, and works better in shaking status, but in some special case when the battery is damaged inside, it may explode, so on this aspect, li-ion battery is not as safe as lithium polymer battery. However, most li-ion batteries are cheaper than lithium polymer batteries; this is a big reason why it still occupies a big ratio of digital electronics battery markets.

How to choose between lithium polymer battery and li-ion battery?

If you have special requirements on the battery shape, especially thickness, you can use lithium polymer battery, which can be even 0.5mm thickness. Besides, if you want to minimize the product weight and get special shape like half circle, ultra narrow, arc, you need to use lithium polymer battery .If you have high safety requirements on the battery, lithium polymer battery is also the one.

If the battery cost affects too much in your design and marketing, you can use cheap li-ion batteries, if your product works under complicated and shaking environment, its recommended to use also the li-ion batteries.

In one word, you can choose them according to your actual situation and conditions.

3mm rechargeable thin battery solution by Padre

Recently Padre released a small battery solution, 3 mm rechargeable lithium polymer battery.

It’s not big problem actually for most lipo batteries to work with 3mm thickness, but for small size ones, it can always be problem because of the PCM(protection circuit module), the PCM itself always has thickness of about 3mm, if the size is big enough, the whole battery can have only 3 mm thickness, but what about the small size batteries? such as the PD301220, the length and width is 12mm and 20mm, the width is too narrow to place all parts of the PCM, the PCM must be folded, hence the thickness will for sure be more than 3mm, always 3.5mm, but this is not accepted by many engineers who require max thickness of only 3mm.

small size lithium polymer battery thin solution

3 mm solution of small size lipo battery

Padre offered new solutions and made it under 3 mm with a small size lithium polymer battery PD301220, but another problem is involved, the length can be 2 mm longer than normal ones. the lipo battery final size with PCM is 3.0mm x 12.5mm x25mm.

 

A device to keep people warm outdoor without wearing too much in hard cold season?

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In cold season, outdoor actions are always painful, but now things are different with latest Padre Electronics heated battery technology.

Heated Clothing Battery – Staying Warm in the Coldest Day of winter

If the freezing cold in the outdoors prevents you from the leaving the home, it is perhaps time to outfit yourself with the latest heat tech-gear that clothing manufacturers have introduced recently. This newest type of heat tech-gear can keep you comfortably warm even when the snow is falling and the temperature is below zero. Each clothing manufacturer uses its own technology in providing warm and comfortable clothing through heated clothing battery, through a bike’s electrical system and through gel packs.

The technology of heated clothing battery

There are two methods used in providing heat to motorcycle riding gear: through a portable heated clothing battery and the other through the 12-volt electrical system of the motorcycle itself. There is also a heated glove battery that can produce about 7.5 volts for each glove for approximately 2 hours. However, the heat generated by the heated glove battery is restricted and may not be sufficient in extremely cold temperatures. On the other hand, there is a 12-volt vehicle operated heated glove that produces unlimited 11 to 14 volts each. However, new technology has introduced the Li-on (lithium ion battery) and the Li-polymer (Lithium polymer battery) heated clothing battery that can provide heat to motorcycle cycle gloves and socks for several hours.  These are reliable technologies that can be used during winter; however, it is important to have a redundancy in case a sudden breakage in heating elements.

lithium ion heated gloves battery

lithium ion heated gloves battery

The technology of heated clothing through electrical current

This heated clothing technology makes use the electrical current from the motorbike’s electrical system. Large bikes often have sufficient on-board capacity to provide power to a 90-watt heated liner with pants, gloves and socks. However, there are certain factors that have to be taken into account. If the pants, gloves and socks are all connected to the motorbike’s electrical system, they can easily draw about 12 amps. A heat temperature controller is crucial because it can control the heat output of the body so that the power from on the bike’s electrical system can be kept down. Some of the heat temperature controllers that been introduced recently to the market are pulse-width modulators and not rheostat adjustable resistors.

The technology of heated clothing through gel packs

Chemical reaction-based heated clothing includes pockets or cloth pouches where packages of chemical hand warmers can be placed. The chemical hand warmers are in the form of cards with chemicals that produce heat. Traditionally, the hand warmers were in the form of a metal box with burning charcoal to provide heat. Today’s technology is a single-use heat pack containing gel that can be activated by simply twisting the package so that a chemical reaction can be triggered. There is also another technology where the gel is heated inside a microwave prior to going outdoors. The gel packs are inserted into pockets inside the garment to provide heat from 30 minutes to about 2 hours. While the gel packs are referred to as hand warmers, they can be used in other parts of the winter clothing like inside the boots or vests.

Is Lithium polymer battery better than lithium ion battery?

chinalithiumbattery

Lithium ion batteries are known for their high energy density but so does the Li-polymer battery that even allows a slight increase. Solid polymer is flexible which makes it possible to create batteries into various shapes and sizes including thin films. It is common to find lithium polymer batteries that are relatively thin like the one used by Nokia BP-4L in several devices. Li-polymer batteries can be made very slim like a credit card that can fit neatly into stylish mobile devices so that they can be made lighter and extremely thinner than their counterparts to attract a lot of attention in the competitive market of mobile devices.

The charge and discharge characteristics of lithium ion batteries and lithium polymer batteries are the same and do not require a special charger. Safety issues are also alike since both require protection circuits. However, gas buildup when charging a Lithium polymer battery

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Is Lithium polymer battery better than lithium ion battery?

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Lithium ion batteries are known for their high energy density but so does the Li-polymer battery that even allows a slight increase. Solid polymer is flexible which makes it possible to create batteries into various shapes and sizes including thin films. It is common to find lithium polymer batteries that are relatively thin like the one used by Nokia BP-4L in several devices. Li-polymer batteries can be made very slim like a credit card that can fit neatly into stylish mobile devices so that they can be made lighter and extremely thinner than their counterparts to attract a lot of attention in the competitive market of mobile devices.

The charge and discharge characteristics of lithium ion batteries and lithium polymer batteries are the same and do not require a special charger. Safety issues are also alike since both require protection circuits. However, gas buildup when charging a Lithium polymer battery may cause the foil packages to swell so that manufacturers need to make some allowances for expansion. Li-polymer battery in a foil package can be less durable than a lithium ion battery in a cylindrical package; however, this issue is solved by packaging the Lithium polymer battery in a cylindrical package. Similar to the lithium ion batteries, the lithium polymer batteries slowly degrade from the date that they have been created. If you are going to buy a new battery pack, make sure it is new and it has not been sitting for a long time on the store shelves. Both batteries also prefer partial discharges and they hate heat which can cause their degradation.

Something about rechargeable batteries you must know

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Rechargeable Battery for a Greener Environment

According to the Environmental Protection Agency (EPA) tons of dead alkaline batteries are thrown into the landfills yearly. These dead batteries come from electronic toys and games, portable audio equipment and gadgets and make up almost 20% of the hazardous materials the environment. During normal use, alkaline batteries are sealed making them safe to use but when they are degraded in the landfills, they result into toxins leaching into the ground. A better option to create a greener environment is Rechargeable battery.

Why is the Rechargeable battery a better option?

A Rechargeable battery when charged properly can be used for hundreds or even thousands of times. While the initial cost of the battery is relatively higher than non-rechargeable batteries, it becomes more cost effective in the long run because it can be used over and over again. One of the most common types of Rechargeable battery in the market today is the lithium-ion battery that has a longer life and holds charge better. Lithium-ion battery is different from Lithium battery that is not rechargeable but has a longer life. A Lithium battery is typically found in devices like pacemakers and other electronic medical devices. Lithium batteries can also be used on ordinary devices like cameras and clocks, but they are more expensive even if they minimize the need for battery replacements. Another example of Rechargeable battery is nickel-metal hydride (NiMH) that boosts of higher capacity but with shorter shelf life. It is important to ensure that the NiMH battery is not over-charged because it could lead to a decreased capacity.

Important factors to consider when buying rechargeable batteries

When buying rechargeable batteries for replacement it is critical to consider size, power and warranty. It is important to check whether the physical dimensions of the rechargeable batteries are similar to the battery being replaced. It is also important to consider the required power for replacement and the warranty provided by the manufacturer to ensure that you will be satisfied with the replacement. Increasing brand competition among manufacturers have made rechargeable batteries available with new improved specs and are rechargeable for 1,500 times without reacting to changes in temperature.

Reasons why some rechargeable batteries fail

There are several reasons why rechargeable batteries fail. Usually excessive heat can cause corrosion while extreme cold can sometimes put a heavier drain on rechargeable batteries. Overcharging usually results into overheating and causes the battery to depreciate. If the battery is not securely held down, vibrations can shed the active material from the battery’s plate grids. Other possible reasons for failure of your rechargeable batteries are corroded terminals, sulfation due to inactivity or electrical shorts. Since rechargeable batteries are made from different compositions, this can also influence depreciation.

In order to prolong the life of the rechargeable batteries, it is important to store them fully charged to prevent freezing. The best area to store the batteries is a dry, cool and well ventilated place that is away from the reach of children and pets. Check the level of charge every 30 to 45 days.

 

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