Beyond the battery ... Sinclair scientific calculator we looked at over the summer. But if you want to see the peak of homebrew calculator technology, this Raspberry Pi powered build is tough ...

TI certainly have certainly seen off rivals such as HP or Casio to capture the lion’s share of the calculator market. The TI-84 is a real staple, and with as many units as there are out there ...

If your car battery has a tendency to run dry when left idle for too long, you need a solar-powered car-battery maintainer. Even in the photon-averse British weather, a solar panel affixed to the ...

His energy-efficiency and solar consulting ... If the battery powers a smaller load of only 1,250 watts (or 1.25 kW), it can last for eight hours with a full charge (1.25 kW x 8 hours = 10 kWh).

The solar-powered self-charging Aptera has a top speed of 100+ mph with a 0-60 mph time of 5.5 seconds. The 100 kwh battery is the highest range option for Aptera producing 1,000 miles of range.

We earn a commission from partner links on Forbes Home. Commissions do not affect our editors' opinions or evaluations. With the freshly updated 30% federal tax credit, a decrease of over 40% in ...

Online tools like Project Sunroof and NREL's PVWatts Calculator are great resources ... after going solar. Depending on your out-of-pocket costs for a solar power system, it could take seven ...

Commissions do not affect our editors' opinions or evaluations. Solar panels and their accessories unlock the boundless energy from sunshine and transform it into useful energy at home.

On April 8, a rare total solar eclipse drew a "path of totality" over North America, throwing swaths of the United States, Canada and Mexico into darkness in the middle of the day. A solar eclipse ...

A total solar eclipse takes shape today, April 8, when an overlap between the sun and the moon is expected to darken daylight skies over parts of North America and ask awestruck Earthlings to ...

Read the latest eclipse forecast and news as of Wednesday, April 3. The buildup to the total solar eclipse of April 8 ...