chrisski
Solar Boondocker
- Joined
- Aug 14, 2020
- Messages
- 5,192
I have built and am testing a homemade USB Quick Charger 3.0. I'm using a charge socket, a solar panel and a converter. Want to do this without the battery, so I'm hoping the converter will work. Long story short, not sure this project works for a bunch of reasons. I know I'm not the first one to try this, but I don't see results in the search feature or Google.
I bought a 64 watt USB Quick Charge 3.0 Socket that also comes with USB-C. This can draw up to 64 watts when it has greater than 24 volts of power and goes into quick charge mode.
I also used one of my Lion Energy Portable 100 watt panels, which is unstickered, but the performance specs from my multimeter and battery charger make the open circuit voltage of 21 volts and open circuit amps of 6. When it is performing, the max my charge controller saw was 18 volts and 5.6 amps.
I did not use my Solar Charge Controller for this, because I want some ease of setup and portability. I used a up down buck converter to get the voltage from the panel up to 24 volts.
The buck converter took the power from the 100 watt panel, and converter it to 24 volts, and when plugged in the phone did charge. The picture did not come out good, but the charger is saying 24 volt.
This does look like a success, so the only way I have to measure this is a amp meter. This is the first time I used this thing. So, appears there are .381 DC amps at 24 volts going into the USB Quick Charge. So at a 24 volt profile, it should charge at a max of 33 watts. The Amp Meter puts the charging watts at 9.1 watts. When I see my phone plugged into the 12 volt side of my RV, it can pull 1 amp, so that would be 12 watts.
So by going to 24 volts for quick charge, appears my phone is charging a little slower. Whole intent of this thing is to be able to sit in my chair somewhere outside with the 100 watt panel and plug this in to charge my phone. Not pretty, but as I tweak this, I'll put it in a project box,
I bought a 64 watt USB Quick Charge 3.0 Socket that also comes with USB-C. This can draw up to 64 watts when it has greater than 24 volts of power and goes into quick charge mode.
I also used one of my Lion Energy Portable 100 watt panels, which is unstickered, but the performance specs from my multimeter and battery charger make the open circuit voltage of 21 volts and open circuit amps of 6. When it is performing, the max my charge controller saw was 18 volts and 5.6 amps.
I did not use my Solar Charge Controller for this, because I want some ease of setup and portability. I used a up down buck converter to get the voltage from the panel up to 24 volts.
The buck converter took the power from the 100 watt panel, and converter it to 24 volts, and when plugged in the phone did charge. The picture did not come out good, but the charger is saying 24 volt.
This does look like a success, so the only way I have to measure this is a amp meter. This is the first time I used this thing. So, appears there are .381 DC amps at 24 volts going into the USB Quick Charge. So at a 24 volt profile, it should charge at a max of 33 watts. The Amp Meter puts the charging watts at 9.1 watts. When I see my phone plugged into the 12 volt side of my RV, it can pull 1 amp, so that would be 12 watts.
So by going to 24 volts for quick charge, appears my phone is charging a little slower. Whole intent of this thing is to be able to sit in my chair somewhere outside with the 100 watt panel and plug this in to charge my phone. Not pretty, but as I tweak this, I'll put it in a project box,
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