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The Ultimate Guide Of Rechargeable Li-Polymer Battery Pack

Release date:Apr 06 ,2022 Source:BPI Pageviews:-
The world is moving towards net-zero to save it from further harmful gases from different energy resources that contribute to global warming. So in climate changes, the only viable solution to overcome the emission of greenhouse gases is to opt for renewable energy sources. However, energy from renewable sources such as wind or solar farms requires a storage facility to store the generated power, which can be used later.

What is Rechargeable Li-Polymer battery pack?

The world is moving towards net-zero to save it from further harmful gases from different energy resources that contribute to global warming. So in climate changes, the only viable solution to overcome the emission of greenhouse gases is to opt for renewable energy sources. However, energy from renewable sources such as wind or solar farms requires a storage facility to store the generated power, which can be used later.

Energy can be stored with the help of the battery pack. Battery packs are the series and parallel combination of smaller batteries to add up the voltage and current capacity to store power for a longer period of time.

Various battery-pack types are used to meet the demand; however, selecting the best is significant. The best among many at present is the rechargeable Li-polymer battery pack which came into emergence in 1970. The rechargeable Li-polymer battery pack is the crucial component for storing energy in future power systems. The rechargeable Li-polymer battery pack has a high energy density, and construction is almost the same as a Lithium-ion battery. Still, the only difference is that between the cathode and anode terminal, a polymer separator is utilized along with gel rather than liquid.

Li-polymer battery pack internal structure

Figure 1. Li-polymer battery pack internal structure

Capacity on the hand for the rechargeable Li-polymer battery is measured in units such as amp-hour (A·h). The rated capacity of a Li-polymer battery is often illustrated as the product of 20 hours multiplied by the current that a fresh LiPo battery can reliably supply for 20 hours at 68 degrees Fahrenheit (20 degrees Celsius) while keeping above a set terminal voltage per cell at normal temperature, a LiPo battery rated at 100 Ah can deliver 5 A over 20 hours. A LiPo battery’s ability to provide a fraction of the stored charge is determined by several parameters, including the battery’s chemistry, the pace at which the charge is given (current), the required terminal voltage, the storage time, ambient temperature, and other considerations.

Type of Rechargeable Li-polymer battery pack

Currently, there are three types of Li-polymer battery which are:

Gel polymer electrolyte lithium-ion battery

Solid polymer electrolyte lithium-ion battery

Lithium-ion battery with composite gel polymer cathode material

Features of rechargeable Li-Polymer battery pack

The rechargeable Li-polymer battery pack is extremely safe and has a lower chance of electrolyte leakage. It is lightweight, smaller in size but comes with great capacity and has a low discharge rate due to miniature internal resistance. The rechargeable Li-polymer battery pack can be manufactured in different shapes due to its robust design and flexibility.

Li-polymer battery pack internal structure

Usage and storage of rechargeable Li- Polymer battery

Due to its lightweight and robust design, it has numerous usage that is it can be used in mobile phones, wireless headphones such as air pods, drones, RC vehicle electric bike, vehicles, etc. Since a pack of Li-Polymer Rechargeable batteries provides high backup time, it can also be utilized for storing power coming from renewable energy sources while coming to the storage of the system of the battery.

1. They were advised that the lithium polymer battery and polymer battery pack be kept at -20 to 35 ° C with low humidity and no corrosive gas to retain their capacity.

2. Avoid keeping the battery in a hot or humid environment; the lithium-polymer battery may leak, corrode, and have an insufficient capacity due to this.

3. Protracted storage may reduce the capacity of lithium polymer batteries and battery packs, necessitating up to 1-3 charge/discharge cycles to achieve maximum discharge capacity.

4. Following three months of storage, the lithium polymer battery must be recharged and discharged once.

Correct Charging Method

Your new battery pack will arrive at 30-60% SOC depending on how it was shipped. Before you use your pack for the first time, make sure it’s fully charged. On the LiPo setting exclusively, charge your Li-Polymer battery pack at 5C or less. A balance charging system, such as the Hyperion, Hitec, EV-Peak, or Graupner chargers available from BPI & Co (better power new energy), is required. Otherwise, your pack may become dangerously out of balance over time, resulting in a large reduction in a lifetime.

For instance, if you charge a 4000mah LiPo pack at 1C, it will charge at 4 Amps. Or, if you balance charge a 4000mah LiPo pack at 5C, you’ll be using 20 amps.

About Our Company BPI

We at BPI provide all kinds of batteries such as Lithium-Polymer/Li-Ion rechargeable batteries, Ni-MH rechargeable batteries, and Nickel-Zinc batteries. Along with its compatible charger and solution manual with full back and customer support, our primary goal is customer satisfaction. Here ordering from BPI, you won’t repent on your decision.

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