4 ms·
This is neat, but using an off the shelf power bank and keeping it plugged in is going to destroy the battery in a year or two. Those Li-ion pouch cells deterio
by Saris 3y ago
This is neat, but using an off the shelf power bank and keeping it plugged in is going to destroy the battery in a year or two. Those Li-ion pouch cells deteriorate rapidly at 100% charge, especially in a warm environment.
It's better to use a DIY DC UPS with some LiFePo4 cells, that only charges them to 80% or so. And you won't have any issues with power reset.
There's also much more of a fire risk when using Li-ion cells compared to LiFePo4.
- lhamil64 3y agoAt one point I was using an old phone as an IP camera and I had it plugged in to a battery bank that was constantly charging. The battery bank died pretty quickly, I think within weeks. Then I just plugged the phone directly into power, and the phone battery died eventually too (it started bulging, glad I noticed before it got worse). So yeah, Li-ion batteries don't like constant 100% power.
- dragontamer 3y agoOr you can use Lead Acid, which actually likes being at 100% perpetually. 12V 7AmpHr lead acid is a big standard battery that should be good enough for most people. A Dc DC Buck converter to 5V is like 16+ AmpHr at 5V.
- infotogivenm 3y agoCame here to mention this. I used this exact setup (used a laptop battery bank off of amazon as a UPS for my home modem), and came home months later to find the bank had caught fire at some point, melted, and was no longer functional. Would not recommend