Battery Pack From Old Laptop

Make a 3S battery from old Laptop Battery

I needed a battery for my gimbal, and wanted to make it as small as possible and still have enough power to run the gimbal properly. The top bar of the gimbal is an old carbon bike handlebar. And I thought it would be cool to have the battery inside that. So that meant that i had to find some round batteries that would fit inside the handlebar.

I found a old defect laptop battery, and took i apart.

Lenovo Laptop BatteryThis one was from and old Lenovo, 9 Cell. My plan was to use as many as possible, but could only fit 3 in series to make a 3S battery.

nrc18650 li-ion cellI then seperated the cells. And was careful not short them.

The voltage on a NRC18650 cell should not be under 3.0v. The cells i used messured 3.6v so they should be fine to use.

3S Lipo NCR18650 Wiring Diagram

The 3 cells are wired like the diagram above so i have the possibilty to balance the cells, thou this require a charger that can do that.

My plan was to use a Battery Protection Board (BMS). So i can use other power sources. this protect the cell from discharging below a certain voltage and also from overcharging. Some of the board can also balance the cells.

 


Doradus 12.6V 8A w/Balance is the one i was thinking of ordering, but for now i’m testing to see if the battery exceeds my needs for the gimbal.

NCR18650 Charging
The charger was set to balance the batteries. And when it was done all the cells voltage was on 4.2V each which is perfect. It’s working which is great now i can begin to install them in my gimbal. Which is going to be a challenge.

I have to mention that i am no expert on Li-ion batteries, the information i have on this is what i could find around the internet. But if you have any questions i will try to answer.

If you want to follow my progress on my gimbal you can take a look at this YouTube playlist. https://www.youtube.com/playlist?list=PL5KFJk7C88CyACT3uYYr-Nyx273IVfg3U or the articles on this blog.

Related posts

Commodore 64 back to life

Commodore 64 back to life


Commodore 64 back to life

Commodore 64 back to life. My brother found an old Commodoe 64 in his basement, and asked me if i wanted to have it.I got this box from him, it was very dusty, and yes that is a printer. I was not sure what to expect, but went ahead and connected it to the TV, and it actually turned...

DIY Gimbal Project (AlexMos) Worklog

DIY Gimbal Project (AlexMos) Worklog


DIY Gimbal Project (AlexMos) Worklog

Today i ordered the first parts for my Gimbal project.I have ordered Battery, Motors, and Controller, when i receive the parts i can begin to design the frame. The Gimbal is going the be used with a Sony A6000 Camera.This is the fist gimbal i ever made so this is Not a how to guide(at...

Arduino code for the Camera Slider.

Arduino code for the Camera Slider.


Arduino code for the Camera Slider.

//Recently i have gotten some request for sharing the Arduino code for my homemade camera slider.To start with i just want to say, I'm no master in this, so there can be bugs, and the code is still early and not complete. Recently i haven't had much time for these kind of projects...

Camera Slider Schematics

Camera Slider Schematics


Camera Slider Schematics

Wiring diagram for My camera Slider build.The stepper motors wiring is dependent on witch stepper motor you use, so for that you have to examine how the wire it to the EasyDriver. Also the relay is wired but how you wire it to your camera is also something you have to examine to your...

Camera Slider – Controlled by Arduino

Camera Slider - Controlled by Arduino


Camera Slider - Controlled by Arduino

Camera Slider Build. This article is about how i made my own smart camera slider, i wanted to build my own camera slider that would be used for both video and timelapse photography. I spend a lot of time looking for parts for the build, and found the most of the parts i used in China, and i...

Is 3D Printing Difficult and Expensive ?

Is 3D Printing Difficult and Expensive ?


Is 3D Printing Difficult and Expensive ?

3D Printing! is it Easy or Hard ? I am about to enter the world of 3D printing because i see the potential in it for my upcoming projects. I have no experience with 3D printing, and I want to see how difficult is it to start with 3D Printing, and does it have to be expensive ?So I found a...

Leave a Reply