 Nanoscale batteries can be combined together to function as a macrobattery such as within a nanopore battery.Traditional lithium-ion battery technology uses active materials, such as cobalt-oxide or manganese oxide, with particles that range in size between 5 and 20 micrometers (5000 and 20000 nanometers – over 100 times nanoscale).It is hoped that nano-engineering will improve many of the shortcomings of present battery technology, such as volume expansion and power density.