Netgear 6000413 Replacement Battery for AirCard 80XS Mobile Hotspots - Non-Retail Packaging - Black Stay connected with this powerful rechargeable1800mAh Li-Ion battery which allows you to use and share your mobile hotspot for up to 4 hours of operation or 36 hours on standby. This replacement battery is designed to be used with all AirCard 80xS mobile hotspots. Sierra Wireless's AirCard W801 replacement rechargeable battery has the same Lithium Ion technology as included in the original