TREBOONA.com

Solar Cell Efficiency

Only 1% of the light landing on the first solar cell was turned into electricity. The first commercial solar panels in the 1950s improved this to 6%, but continued development has pushed the efficiency of modern devices to nearly 20%. Researchers are now working with novel materials having efficiencies above 25%.

Solar, Windup, Dynamo, and Faraday Powered LED Torches and Gadgets
We accept PayPal
No registration required
Check our eBay listings
Pay less on eBay

Rechargeable Wind-Up Torch With 5 Super Bright LEDs

8.49
Item available for LESS on eBay

Buy-It-Now Price 5.99


Handheld torch with built-in dynamo mechanism and rechargeable batteries. It is lightweight and comes with three illumination modes (one, three, and five LEDs) as well as an output socket (cable included).

Five super bright LEDs
"Button-operated illumination modes (select one LED, three LEDs, five LEDs to control battery life)"
In-built rechargeable batteries
Dynamo charges batteries
Pull out the handle and turn to charge (two rotations per second)
One minute charge yields up to 15m of light
Boxed with instructions
Cable to charge other devices (instructions not provided)
No-hassle lighting saves a fortune in batteries
Lightweight and ergonomic
LED Charging Indicator
Dimensions: 136mm x 55mm x 45mm
Due to the brightness of the LEDs this torch is not suitable for young children.
<picture temporarily unavailable>

Terms & Conditions

version 1.11.01