Home › Forums › Voltage Regulator Support › Model:090646 SKU:090646 Questions
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paul jozefOctober 24, 2020 at 7:21 pmPost count: 0
I wish to use your Power Converter DC 3~35V to 3~35V 6A Adjustable Voltage Regulator.
I am wishing to build an emergency (only) power blocksfor cell phones.
I am not referring to 10,000 – 20,000mAh everyday use power blocks.
They would only be used for a catastrophic disaster happening.
Hopefully the emergency power block would at best provide a single charge to a phone, because it would totally drain the batteries.
It would use L91 AA Lithium-ion batteries, with a shelf life of 15 years.
- Voltage: 1.5V (1.72V initial peak)
- Capacity: 3000mAh Ultra High Capacity
- Current: 0.5000A
- Max Discharge Current: 2.0A continuous, 3.0A pulse (2sec on / 8 sec off)
- 4.5 watt-hours
The batteries can be purchased everywhere, even in a total blackout.
My design is to make [2] series wired battery packs, then wire them in parallel to boost capacity to 6000mAh (6A). Phones require at least 5V and 1Amp to charge. At this rate the voltage should drop to around 1.4vdc, and all 3000mAh would be used.
Would you please advise nominal voltage to use – 4.5vdc or 6.0vdc. Which would work better with your power converter/regulator?
Your description states, “Identify resistance: Tablet PC, ipad, iphone (some phones identify circuit is different, need to be adjusted)”.
Our phones are:
Samsung Galaxy S7 Battery – 3.85 V, 3,000mAh
Moto G7 Battery – 3.85 V, 3,000mAh
Both phones support 15-watt USB-C fast charging: Output Current: 5V 2.1A (2100mAh)
Will your power converter/regulator allow our phones to accept/recognize power from the battery pack?
Hello paul jozef,
This item doesn’t support USB 3.0 fast charging protocol.
And please kindly notice USB output voltage is not fixed 5v. It is the same as that on screw terminal. So you need to confirm output voltage before connecting USB device.
Best regards.
- This reply was modified 3 years, 6 months ago by Drok.
paul jozefOctober 26, 2020 at 11:10 pmPost count: 0Thank you for the prompt response.
Fast charge is good to know.
I understand you have to manually set the output voltage to 5vdc. My question was about the input voltage choice of 4.5vdc or 6vdc. If I use 4.5, even as the batteries discharge (1.2 volts each) the voltage is always being boosted. If I use 6.0, the voltage is being reduced. What happens if the voltage drop below 5.0? Does it automatically switch to boost mode?
Regarding your statement: The unit can identify phone (you mention iphones) resistance, but may need to be adjusted for other phone manufacturer. Our phones are Android – Samsung Galaxy S7 & Motorola Moto G7. Will the unit work with these? If not how is the “adjustment” made?
paul jozefOctober 30, 2020 at 12:39 amPost count: 0 -
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