1. Cymbet Corporation AN-1059: Extend Battery Life by Reducing System Power Using the EnerChip RTC,
http://www.cymbet.com/pdfs/AN-1059.pdf
. Accessed Dec 2015
2. Cymbet Corporation Solid State Rechargeable Battery,
http://www.cymbet.com/pdfs/DS-72-41.pdf
. Accesed Dec 2015
3. Digi-Key Online Catalog,
http://www.digikey.com/product-search/en?keywords=battery
. Accessed Nov 2015
4. Energizer AA Alkaline (EN91),
http://data.energizer.com/PDFs/EN91.pdf
. Accessed Nov 2015
5. Energizer AA Lithium (L91),
http://data.energizer.com/PDFs/l91.pdf
. Accessed Nov 2015