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Posts Made By:
NiHaoMike
Forum:
Energy Storage
08-24-19, 01:33 PM
Replies:
39
DIY solar power bank 5V 230Wh
Views:
40,806
Posted By
NiHaoMike
You'll have to short the data lines to each other...
You'll have to short the data lines to each other to signal fast charging and adjust the voltage to a bit above 5V, probably 5.2V or so would be ideal. Also, if you're putting USB-C sockets on the...
Forum:
Energy Storage
08-22-19, 07:35 PM
Replies:
39
DIY solar power bank 5V 230Wh
Views:
40,806
Posted By
NiHaoMike
Just one fuse at the battery is all you need for...
Just one fuse at the battery is all you need for your setup. If it's still 15W, a 7.5A or 10A fuse will give plenty of margin.
Forum:
Energy Storage
08-04-19, 07:43 PM
Replies:
39
DIY solar power bank 5V 230Wh
Views:
40,806
Posted By
NiHaoMike
Just build a dual comparator circuit with one...
Just build a dual comparator circuit with one output to trigger around 3.15V and another around 3.45V. That will give an easy indication of low and high charge. If you want more accuracy, you'll have...
Forum:
Energy Storage
08-02-19, 07:33 PM
Replies:
39
DIY solar power bank 5V 230Wh
Views:
40,806
Posted By
NiHaoMike
It's a 555 in an adjustable duty cycle...
It's a 555 in an adjustable duty cycle configuration driving a buck converter.
Forum:
Energy Storage
08-01-19, 08:14 PM
Replies:
39
DIY solar power bank 5V 230Wh
Views:
40,806
Posted By
NiHaoMike
From my experience, that sort of simplistic MPPT...
From my experience, that sort of simplistic MPPT controller is not very good and a 555 will be way better.
At 20W and low voltage, it would probably make sense to build your own solar panel. Go...
Forum:
Energy Storage
08-01-19, 12:03 AM
Replies:
39
DIY solar power bank 5V 230Wh
Views:
40,806
Posted By
NiHaoMike
From a quick search, it looks like 1S LiFePO4 BMS...
From a quick search, it looks like 1S LiFePO4 BMS boards are hard to come by, but 4S LiFePO4 BMS boards are really common. If the 4 cells are closely matched, you can just go for a 4S pack, would...
Showing results 1 to 6 of 6
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