Garmin High Capacity Lithium ion Battery Pack Black. Specifications for Garmin High Capacity Lithium Ion Battery Pack: Manufacturer: Garmin Color: Black Battery Type: Lithium Ion Features of Garmin High Capacity Lithium Ion Battery Pack:GPS Mode: up to 24 hoursGPS Mode with a text message or location sent every 10 minutes: up to 24 hoursExpedition Mode: up to 440 hoursExpedition Mode with a text message or location sent every 30 minutes: up to 400 hoursPowered Off: up to 1 yearNote Battery life estimates are with full sky view and can be significantly impacted by obstructions or tree cover. Package Contents: Garmin High Capacity Lithium Ion Battery Pack Garmin 0101288111: High Capacity Lithium ion Battery Pack Black