The Spare Battery is an extra 3250mAh lithium ion battery for the HMT-1 and part of the standard scope of delivery.
The HMT-1 has a warm swappable function, so you can swap the battery during operation without being forced to switch off the device.

Spare batteries are available separately or as a 6-pack.

Battery for Navigator 500

The battery for the Navigator 500 is a 2600mAh lithium ion battery. This has an integrated 4-stage charge level indicator.
One battery is part of the standard scope of delivery.
The Navigator 500 has a hot-swappable function that allows the battery to be replaced during operation without having to switch off the device.

Spare batteries for the Navigator 500 are available separately.