A series of LEADSUN Freedom Lights with back up systems were installed on the road in Vietnam to instead of the old ones. 

LEADSUN Freedom lite series is an on-grid lighting soulution designed against the power outages challenge and for the backout prone area. It works at full power with electricity and automatically switches to use backup power that will last illumination for a maximum of 10 hours (saving mode) during a power cut at night to ensure the security of person and property.