Lithium-ion ultracapacitor could recharge power tools in minutes
Monday, January 10, 2011 - 16:08
in Mathematics & Economics
(PhysOrg.com) -- Although many people keep a few power tools in the garage or basement for weekend projects, the tools usually dont get used very often. Fully recharging the battery in a drill or saw can take several hours, even if the tool is only used for a few minutes. But with a hybrid energy-storage device that combines a lithium-ion battery with an ultracapacitor, power tools could be recharged in about one minute and have a lifetime of more than 20,000 charges. The downside is that the power tool could run for only about 1/15 as long as it would on a normal battery.
