 " Battery Pack "@en, VW-VBT190 "@en "Panasonic - Pack"@en
"
Features

3.6V, 1940mAh(min.), 7.0Wh
Uses Battery Charger VW-BC10

"@en 
 "Garmin Virb/Aera660 Lithium-lon battery pack (010-11654-03)"@en
"Buy Garmin Virb/Aera660 Lithium-lon battery pack (010-11654-03) - For extended outings, bring an extra Lithium-ion battery pack for your compatible Garmin "@en 