rebelrider.mike
Member
- Joined
- May 25, 2017
- Messages
- 548
Not DIY in the sense that I built it from scratch. For about $5 (US), you get basically the whole thing except you add your own cells. I figured I'd run it through a few tests and see how well it performs, and share with you all what I find.
This particular unit I got on eBay, though I also found it for a little more money on Amazon.
I selected 8 cells of the same make and model, and with similar capacities.
Charging from storage (3.77V) to full took a long time on the single USB port. But the charging did terminate at 4.21V. So that's good.
I thought I'd also compare it to a fully store-bought unit which cost significantly more, but only has 6 18650 cells.
Supposedly, you can get faster charging if you plug in 2 USB chargers at once. I plan to test that.
So tests I intend to do are:
- does it in fact, charge faster using two USB chargers.
- how many times can it charge something vs. the store bought unit.
- compare various characteristics between the DIY unit and the store bought unit.
- other things I haven't thought of yet.
If y'all are curious about some aspect of this device, let me know and I'll try to test it.
This particular unit I got on eBay, though I also found it for a little more money on Amazon.
I selected 8 cells of the same make and model, and with similar capacities.
Charging from storage (3.77V) to full took a long time on the single USB port. But the charging did terminate at 4.21V. So that's good.
I thought I'd also compare it to a fully store-bought unit which cost significantly more, but only has 6 18650 cells.
Supposedly, you can get faster charging if you plug in 2 USB chargers at once. I plan to test that.
So tests I intend to do are:
- does it in fact, charge faster using two USB chargers.
- how many times can it charge something vs. the store bought unit.
- compare various characteristics between the DIY unit and the store bought unit.
- other things I haven't thought of yet.
If y'all are curious about some aspect of this device, let me know and I'll try to test it.