DYI portable power pack

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deanburch

New member
Joined
Jun 28, 2018
Messages
1
So far I have just over 300 cells in the charging process. With only one charger its taking a while to get them charger and having to work. I enlisted my son now that he is out of school to charge my cells.The plan is to build a small 1.5-2KWh power pack in a pelican case I got from work. ordered a few goodies from E-Bay for later next month Imax charger, buck converter, usb and 12v car out let with volt display to get things started. Need info on cell configuration best designs.
 

The-J-Man

Member
Joined
May 2, 2017
Messages
260
Greetings!

I just built a similar thing, check out my thread here:
https://secondlifestorage.com/t-HUUUGE-USB-POWERBANK?page=1

I configured in a 4s because the 12V dual USB chargers have an operating voltage of like 9-24V. Full charge is 16.8 and nearly depleted pack would be about 11.2V. That way I didnt have to worry about a buck converter.
I could easily add a 12V Car outlet to the system. All wiring is suitable for about 10A, at absolute most 15A ( so about 200W) I would just need to change the fuses to slightly higher current ones. Then I could draw a decent amount of power out of it.
Maybe you find some inspiration from my build ;)
 
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