Type of the battery

Components & Accessories Power
1

I just want to know the type of this battery from sparkfun website

Lithium Ion Battery - 400mAh

PRT-13851

Is this battery prismatic cell or pouch cell?

2

Hello, and thanks for posting your question!

All the Lipo batteries we carry are pouch cells, with the exception of the few 18650 batteries we carry that are enclosed in a metal tube.

Hope this helps, and have a great weekend!

3

Thanks for your kind answer.

I have one more question regarding this battery.

I would like to know the material for cathode and anode.

4

I’m sorry, but I don’t have an answer for that. SparkFun doesn’t actually make batteries, we just carry them on our website. A internet search for “what are lithium polymer batteries made from” might get you the info you’re looking for though.

5

Thanks for your kind answer.

I did battery cycling with this type of battery.

from the data sheet, this battery’s rated capacity is 400mAh.

However, When I followed standard charge/discharge procedure from data sheet, the capacity is almost 440 ~ 450mAh.

*standard charge/discharge procedure : charge with 0.2C(80mA) up to limited voltage(4.2V) and charge with limited voltage up to end-of-charge current(0.01C, 4mA), discharge with 0.2C(80mA) constant current discharge to the discharge cut-off voltage(2.8V)

I am little bit confused whether the capacity from my experiment is correct

Is it right capacity value of this battery?

6

Battery capacity can vary slightly from cell to cell but the over all average for a large number of cells should be close to 400mAh. A little more than the stated capacity is normal and nothing to worry about.

If your tests are indicating 440-450mAh, that’s probably accurate and you just get a bit of extra for your money. :slight_smile: