Sentences with phrase «enough cell phone battery»
We wish it used renewable power like so many of their other products, but it'd be pretty incredible to get enough cell phone battery power in 10 minutes of winding a crank.
https://www.treehugger.com/ Not exact matches
Initial results already show stable charge - discharge cycling for as long as 200 hours, which is long enough for use in some industrial or military applications, but not nearly adequate for batteries used in laptops or cell phones.
The problems that we saw however are relatively low battery life, better than cell phones but not enough to say take on a camping trip with no recharge ability.
Charging the battery pack (which holds enough electricity to recharge a cell phone or iPod) to full capacity takes 5 hours of sunlight, so unless you plan on being outside quite a bit of the day, it might be smart to detach the solar panels and battery pack and set them out in the sun for a stretch.