Solar Power Bank Using Old Laptop Batteries
by Amit_Jain in Circuits > Electronics
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Solar Power Bank Using Old Laptop Batteries
![IMG_20200307_163138.jpg](/proxy/?url=https://content.instructables.com/FNR/XS9C/K7KSC86A/FNRXS9CK7KSC86A.jpg&filename=IMG_20200307_163138.jpg)
Hi All,
In this instructable, I will share how to make a Solar Power Bank using a Kit and old Laptop batteries
This kit was bought from Aliexpress. The power bank has a led panel that can be used for camping. so good builtin power bank and light combination
What Do We Need ?
![IMG_20200307_144655-01.jpeg](/proxy/?url=https://content.instructables.com/FB0/H5WK/K7KSC80Q/FB0H5WKK7KSC80Q.jpg&filename=IMG_20200307_144655-01.jpeg)
- Solar Power bank kit from Aliexpress (https://a.aliexpress.com/_d8ypnQv )
- Old Laptop Battery
- Multi meter
- Soldering Iron
- Wires
Extract Batteries
![FD1BO61J3EPOVSM.LARGE.jpg](/proxy/?url=https://content.instructables.com/FY4/BHY0/K7KSC8M1/FY4BHY0K7KSC8M1.jpg&filename=FD1BO61J3EPOVSM.LARGE.jpg)
![F8ORUSJJ3EPOVSC.LARGE.jpg](/proxy/?url=https://content.instructables.com/FUU/J9UA/K7KSC8M2/FUUJ9UAK7KSC8M2.jpg&filename=F8ORUSJJ3EPOVSC.LARGE.jpg)
![F0ZB8LQJ3EPOVST.LARGE.jpg](/proxy/?url=https://content.instructables.com/F3I/V2AF/K7KSC8M0/F3IV2AFK7KSC8M0.jpg&filename=F0ZB8LQJ3EPOVST.LARGE.jpg)
I have extracted my batteries from old laptop battery
- Gently break open the outer shell
- Carefully disconnect batteries from circuit and each other
- Test battery voltage, it should be above 3v
I have used batteries that were around 2.5 v and yet worked fine
Battery Pack
![IMG_20200307_145017-01.jpeg](/proxy/?url=https://content.instructables.com/FUE/TXVP/K7KSC80V/FUETXVPK7KSC80V.jpg&filename=IMG_20200307_145017-01.jpeg)
- To make the battery pack we need 4 cells connected in parallel
- Remember to use thick copper wire
- Do not overheat the batteries while soldering, take breaks if needs
Assembly
![IMG_20200307_154915-01.jpeg](/proxy/?url=https://content.instructables.com/F1L/8SLQ/K7KSC812/F1L8SLQK7KSC812.jpg&filename=IMG_20200307_154915-01.jpeg)
![IMG_20200307_155600-01.jpeg](/proxy/?url=https://content.instructables.com/FJB/Q1WX/K7KSC81W/FJBQ1WXK7KSC81W.jpg&filename=IMG_20200307_155600-01.jpeg)
![IMG_20200307_155715-01.jpeg](/proxy/?url=https://content.instructables.com/FRT/BMJY/K7KSC81D/FRTBMJYK7KSC81D.jpg&filename=IMG_20200307_155715-01.jpeg)
- On the main PCB, we have following, clearly marked
- Battery ( B+ and B-)
- Solar+ and Solar -
- Led+ and LED-
- This makes is extremely simple.
- Just solder the respective wires on the PCB
- You may have to secure panels and batteries using tape or hot glue
- Always before closing, test every thing
Close It Up
![IMG_20200307_162226.jpg](/proxy/?url=https://content.instructables.com/FRU/USI7/K7KSC83Y/FRUUSI7K7KSC83Y.jpg&filename=IMG_20200307_162226.jpg)
![IMG_20200307_162524-01.jpeg](/proxy/?url=https://content.instructables.com/FDT/JH48/K7KSC817/FDTJH48K7KSC817.jpg&filename=IMG_20200307_162524-01.jpeg)
![IMG_20200310_160758.jpg](/proxy/?url=https://content.instructables.com/FIF/1ABB/K7KSC84I/FIF1ABBK7KSC84I.jpg&filename=IMG_20200310_160758.jpg)
- The outer case needs to be secured with extremely tiny screws..
- Once done, charge the power bank full and then using USB doctor to test the actual capacity
- Solar Panel, does not really do much
- The LED panel is good for camping or emergencies