3 ms·
> Daymak Beast - the problem with these is always that the battery doesn't have enough juice and the solar panels are only strong enough to power a pocket calcu
by avian 12y ago
> Daymak Beast - the problem with these is always that the battery doesn't have enough juice and the solar panels are only strong enough to power a pocket calculator.
In the specifications they say their solar panel is "15 W/hr". They even calculate that again in their update. I think that's enough to say they don't know what they are talking about.
- IgorPartola 12y agoNice. A Watt is a Joule/second, or rate of transfer of energy. So W/hr is unit-equivalent to Joule/(second * second) or acceleration of transfer of energy. What they probably mean is Watt * hour which is a unit of energy (Joule / second * second or just Joule). 15 Watt*hours is enough to power a 15 Watt bulb for one hour. Or move a hamster on a trike across a living room for about the same amount of time.