A great pendant for green energy fans.
This crystal contains the most modern technologies. Hybrid supercapacitor as an energy storage element, smallest solar cells, ultra efficient energy harvesting chip, perfectly tuned for these solar cells and for hybrid supercapacitor. Therefore, all possible energy obtained from solar cells is efficiently stored. Does not require direct sunlight for continuous operation. Blinking circuit is sofishticated and also ultra efficient. Placing all these circuits and components in such a small volume was not an easy task.
Hybrid supercapacitors are very reliable and safe, do not contain toxic substances, have no shipping restrictions. Have tens or even hundreds of thousands of charge cycles. They have a very low self-discharge. The energy harvesting chip also performs the role of battery management system. So the supercapacitor will never overcharge or overdischarge. There is also thermal protection.
One full charge is enough for 3-4 months of working in complete darkness. Does not require direct sunlight for continuous operation. But after full discharge, you can charge it to 100% in one sunny day under direct light.
main features:
- charging from solar cells, even from a few microwatts using MPPT algorithm.
- workin time 3-4 month in complete darkness
- only a little light is needed for continuous operation for tens of years
- almost infinite number of charge cycles
- completely sealed. Сan be used even under water
- no connectors, no mechanical buttons, nothing to break. Should work for a very long time. Maybe even more than 100 years
- operating temperature: from -40 to +65
- dimensions: 55mm x 14mm (2.165 inches x 0.551 inches) - only crystal without metal ornament.
- weight: 5.6g (0.1975 oz) - only crystal without metal ornament.