what kind of USB is this? 2.0 A?

Maximum output power is 1.0A. And output connector is a USB A type female connector. So you can use anything of USB devices.

What is the temperature gradient needed for peak output? Can I put something super cold on the water side instead of applying heat to the bottom side?

If the bottom plate(cold) is 100 degree Celsius and the top plate(hot) is 250 degree Celsius, so like this dT 150 C is output power 3 Watt and case of dT 250 C is output power 5W.

Hi, what kind of cables can you connect to this and Can you charge tablets?

Hi, The cable is a micro 5 pin USB which is a normal Android smart phone cable and tablet PC also possible.

Is pond water okay? What about clear water from a running river? Rain water? Or does it need filtered drinking water, which then needs thrown out?

Yes, pond, river and rain water are OK because just it is used for heat sink. Don't drink the water in silicone bowl.

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Portable Thermoelectric Generator for Camping - Max 5W USB Charging

Portable Thermoelectric Generator for Camping - Max 5W USB Charging

Product ID: 72514048

Details

Brand
Ajirangi
Color
Sky Blue
Fuel Type
No Fuel" or
Included Components
Generator unit
Item Weight
12.32 ounces
Output Wattage
5 watts

⚡5W USB power output

🔥Heat-resistant silicone rubber

🪶350g ultra-lightweight

Description

🔥 Charge your adventure—power up with heat, not hassle! ⚡

POWER UP ANYWHERE - Reliable 5W USB output charges devices fast—even off-grid.
COMPACT YET MIGHTY - Mini 10x4 cm size slips easily into your camping kit without bulk.
ECO FRIENDLY ENERGY - Harnesses thermoelectric tech to convert heat from your stove into clean power.
FEATHERLIGHT FREEDOM - Weighs just 350g and fits in your palm for ultimate portability.
BUILT TO BRAVE THE HEAT - Durable heat-resistant silicone ensures long-lasting, maintenance-free use.

The Ajirangi miniO Portable Thermoelectric Generator delivers a steady 5W USB output by converting heat from your camping stove into electricity. Weighing only 350g and measuring 10x4 cm, it’s designed for backpackers seeking lightweight, maintenance-free power on the go. Its heat-resistant silicone rubber construction ensures durability, making it an eco-friendly, compact solution to keep your devices charged in the wild.

Specifications

ASIN	B00YPKY1ZQ
Additional Features	Portable
Brand Name	Ajirangi
Color	Sky Blue
Customer Reviews	4.1 4.1 out of 5 stars (25)
Engine Power Maximum	5 watts
Engine Type	4 Stroke
Frequency	60 hertz
Fuel Type	No Fuel" or "Thermoelectric
Ignition System Type	Magneto
Included Components	Generator unit only
Item Dimensions L x W x H	1.57"W
Item Weight	12.32 ounces
Manufacturer Part Number	miniO-5W
Material Type	rubber
Model Name	miniO
Model Number	miniO
Output Wattage	5 watts
Power Source	Thermoelectric
Recommended Uses For Product	Camping, Residential
Running Wattage	5 watts
Starting Wattage	5 watts
Unit Count	1 Count
Wattage	5 watts

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