Lithium-Ion Battery Pack

Choose Pknergy as your lithium-ion battery pack customizer and get a design plan within 1 day and free samples within 7 days. It can also meet wholesale orders of 18650 battery cells or 21700 battery cells.

What is a Li-ion Battery Pack?

A Li-ion battery pack is a battery system composed of multiple lithium-ion battery cells. It typically includes the battery cells, a Battery Management System (BMS), a casing, and charge/discharge circuits.

Difference Between Series and Parallel Connections in Li-ion Battery Packs

Series Connection: Increases the total voltage of the battery pack, which is the sum of the voltages of each cell. The capacity (mAh) remains the same.

Parallel Connection: Increases the total capacity (mAh) of the battery pack, which is the sum of the capacities of each cell. The voltage remains the same.

Custom Li-ion Battery Pack Manufacturer

Pknergy has long provided reliable Li-ion battery packs and bulk orders to businesses across various industries. Our factory in China covers over 10,000 square meters with three high-speed automated production lines, capable of producing 100,000 high-quality lithium batteries every month.

What Li-ion Battery Packs Does Pknergy Make?

Pknergy produces Li-ion battery packs with various specifications. For example, we offer 18650 lithium-ion cells with 2200mAh and 4400mAh capacities. We also manufacture 21700 batteries, ensuring we can meet all rechargeable battery pack needs.

Charging Rate of Li-ion Battery Packs

Typically, Li-ion battery packs have a charging rate of 0.2C. If you have specific charging rate requirements, we can customize the rate to 1C or 2C.

Outstanding Battery Manufacturing Experience

With 20 years of battery production experience, Pknergy has developed numerous Li-ion battery pack solutions. Based on customer requirements, we select suitable lithium batteries according to the desired battery size, capacity, and voltage. For example, we can use 18650 lithium iron phosphate (LiFePO4) batteries in series to achieve higher capacity or voltage.

Custom Li-ion Battery Pack Process

Simply tell us the desired battery size, shape, daily operating current, expected battery life, and maximum discharge current. Then, wait for Pknergy to create a battery sample! If you’re unsure about these parameters, Pknergy can have engineers join your project to resolve all power-related issues.

Production Time and Capacity

Pknergy's team includes five battery pack designers who create custom Li-ion battery packs with the required voltage and capacity for our clients. Our engineers will provide a suitable battery solution and quote within one day, ensuring smooth progress. Typically, battery delivery takes less than a month, and you can see and test the battery pack sample within seven days. Get a free custom Li-ion battery pack design plan today.

Applications of Li-ion Battery Packs

Li-ion battery packs are commonly used in various small to medium-sized electronic devices. In everyday life, they are found in items like flashlights and power banks. In industrial settings, they are used in robots, underwater cameras, and industrial power tools like drills and saws.

What Does "4s1p" Mean in a Li-ion Battery Pack?

"4s1p" describes the configuration of a battery pack. "4s" means the pack consists of 4 cells connected in series. "1p" means there is one parallel group of cells. A "4s1p" LiFePO4 battery pack has a total voltage that is the sum of the voltages of the 4 cells, and a total capacity equal to that of a single cell.

How Long Do Li-ion Battery Packs Last?

Generally, Li-ion batteries last between 300 to 500 charge cycles, roughly equivalent to 3 to 5 years. However, Pknergy's high-quality lithium iron phosphate (LiFePO4) batteries, such as 18650 or 21700 cells, can last 800 to 1000 charge cycles.