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

£9.99

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

Five super bright LEDs
Brightness adjuster (turn on one or five LEDs)
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 30m of light (on full power)
Carry handle attached
Blister pack with instructions
No-hassle lighting saves a fortune in batteries
Lightweight and ergonomic
Charges mobile phones (cable included)
Dimensions: 155mm x 60mm x 55mm
Due to the brightness of the LEDs this torch is not suitable for young children.
<picture temporarily unavailable>

Terms & Conditions

version 1.12.0.5