Frequently asked questions

How to make a good lithium battery?

What is involved in the design of a battery?
Often, when thinking about a battery of our own, the first thing that comes to mind is the cells and their size. They do indeed …

What is the functions of a BMS?

What is the purpose of a BMS?
Lithium batteries are inherently unstable. When they go outside their operating range, they become a fire hazard. One of the jobs …

How well is the State-of-Charge and State-of-Health determination of a BMS?

How well does your BMS determine current capacity?

Users of devices with batteries find it very important to have a good indication of how long the battery in their device will …

Protection of an LFP (LiFePo4) battery

What to do to guarantee a long lifetime?
For energy storage applications, battery life is the determining factor for cost-of-ownership.
After all, the battery accounts for …

Which is better: round or flat pouch lithium cells?

Should I use cylindrical cells, or would it be better to use pouch type?
The most commonly used cells at the moment are the 18650 cylindrical cells. They offer an excellent balance between ease of use …

How many NTC temperature sensors are required?

Will 1 NTC suffice, or should every cell be measured?
The purpose of the sensors is to protect the cells from overheating. With one sensor you can measure the temperature locally, but …

How do I make a good cost comparison between a standard and custom BMS?

A cost comparison? Is that so difficult?

Actually, it is. In many cases, the technician who has taken on the project is entrusted with making the cost comparison.

This is …