Nowadays, lithium-ion batteries are prevalent—you can find different kinds of consumer electronics that different types of lithium-ion batteries such as button cell li-ion battery or lithium-ion battery packs are applied to. The reason why lithium-ion battery packs are so popular in the market is that they are one of the most advanced long-cycle-life batteries. However, there has been news about Li-ion battery pack incidents, which is often caused by cell mismatch. If the capacities and internal resistance of batteries in a battery pack are not uniform, there will be overcharging, electrical short or high discharge over time, leading to failure or even damage of the batteries. In this article, we will discuss how to choose the best lithium-ion battery packs that are highly reliable and excellent in performance based on your demand. Let’s find out below.

How to Choose the Best Lithium-ion Battery Pack

When selecting your lithium-ion battery pack supplier, please note that battery packs are of various specifications, and are applied to different products according to your needs. For the same reason, selecting the right battery for your application is about identifying the key battery metrics. For example, if the battery packs will be used under high temperature, like in an automotive T-BOX, the high temperature battery packs will be your best choice.

Tips for Choosing the Best Lithium-ion Battery Pack

1. Figure Out the Battery Size You Need

If your gadget is powered by a lithium-ion battery pack, then what you need to do first is to confirm the battery size that will best fit the physical dimensions of your device. 

How to Choose the Best Lithium-ion Battery Pack

If you want to know something about battery sizes, here’s a quick guide:

You’ve probably heard about AAA, AA, C, D and F batteries. Those letters are indicator of battery sizes. Generally speaking, the farther you get through the alphabet, the larger the battery is. (e.g., F is bigger than D.) When you see a letter used repeatedly (e.g., AA, AAA), the more times it is used, the smaller the battery is (e.g., AAA is smaller than AA).

2.Select the Right Power Capacity

Basically, battery capacity shows how much energy the battery can deliver from fully charged, under certain specified conditions. Normally, lithium-ion battery packs of high capacity will power a device for a longer time. Battery capacity is often measured in Ah, Amp-hours or in Watt-hours (Wh). But the rated/nominal capacity, the energy the battery is able to store theoretically, and the useable capacity of the battery are different. The latter refers to the energy the battery can store under the restrictions of depth of discharge, efficiency and charge/discharge rate.

Before choosing your lithium-ion battery packs, please decide its capacity. Battery capacity depends on how long your device is supposed to operate, which can be calculated as below:

(Ah) = Device’s Wattage (W) x Time to run (Hours) / Battery Voltage (V)

How to Choose the Best Lithium-ion Battery Pack

3. Decide Battery Pack Voltage 

The voltage is a very critical characteristic you have to take into consideration before purchasing the battery packs. Battery pack voltage must be equal or a little higher than your device’s need. Due to the internal chemistry features, the voltage of the lithium-ion batteries is pretty much fixed. Depending on the design and chemistry of your lithium cell, you may see them sold under different nominal voltages. For example, almost all lithium polymer batteries are 3.7V or 4.2V batteries. 

Lithium-ion batteries are being highly preferred in commonly used portable electronic equipment, such as earphones, smart phones, PCs, digital cameras, and power tools. They are light in weight with high discharges rate and high power density. BPI is a world-leading professional and reliable lithium battery manufacturer. What makes BPI’s lithium-ion battery packs distinctive from the others is our patented technologies in battery developments and manufacture. The quality of our lithium-ion battery packs is trustworthy because our batteries are assembled by a company that is experienced and certified to test and assemble battery packs. The individual batteries are tested and sorted by machine so that each pack has matching batteries with the same capacity and internal resistance, prominently reducing the risk of electrical short or other damages or dangers caused by battery mismatch. 

BetterPower has been dedicated to the R&D and production of batteries for about 20 years. The possibility for our batteries to catch fire is no more than 1ppm and the possibility for battery leakage is no more than 10ppm. Our products also have been certified to be in conformity with the regulations of ISO9001, ISO14000, UN38.3, IEC, RoHS REACH and MSDS.