National geographic solar chargers national geographic 9055000 p this solar charger 5 5v 90ma from national geographic features a powerful 2000mah li ion battery includes charging adaptors for most mobile phones and acts an ideal travel companion courtesy of its light weight and compact size p p align left charging a mobile phone for 1 to 2 hours can provide about 30 to 60 minutes of talk time or 20 to 60 hours of standby standby depending on the mobile phone compatible with the fo