Dipole battery pack 18650 protected Additional battery for dipole devices 2x 18650 batteries for particularly long battery life Mounts to Picantinny rail This external battery pack holds 2x 18650 high-capacity batteries for external charging of dipole thermal imaging attachments. The battery pack is fixed to the device using a Picatinny mount. The attachment is then permanently charged via the USB-C connection. Delivery: battery pack (without 18650 batteries)