Ultrabattery

Batteries pack a lot of energy into a small space,
but they’re:
. . . . . . Slow to charge,
. . . . . . Lose their capacity after several charge-discharge cycles,
. . . . . . maybe dangerous in wet areas, and
. . . . . . many are not environmentally friendly.
Supercapacitors (also known as ultracapacitors) can:
. . . . . . be charged very quickly,
. . . . . . Survive a near limitless number of charge-discharge cycles,
. . . . . . extremes of temperatures, and
. . . .. . .are made from relatively benign materials.

Ecoult UltraBattery, is a lead-acid battery with a built in supercapacitor.
. . . In addition to its superior electrical characteristics,
. . . the UltraBattery is made from materials that are:
. . . . . . Abundant,
. . . . . . Non-flammable,
. . . . . . Non-hazardous, and
. . . . . . Fully recyclable.
. . . The UltraBattery is also:
. . . . . . Safe,
. . . . . . Clean,
. . . . . . Efficient,
. . . . . . Reliable, and
. . . . . . Inexpensive.

10-4-2016 Source:  UltraBattery