TP-LINK M7350 4G Low-Cost Travel Wi-Fi, Mobile Wi-Fi Hotspot (Share Wi-Fi with Up to 10 Devices, Long Lasting Battery, Easy to Use, Unlocked) : Amazon.co.uk: Computers & Accessories
Synergy Digital Wifi Hotspot Battery, Works with TP-Link M7350 Ver 5 Wifi Hotspot, (Li-Ion, 3.7V, 2000 mAh) Ultra High Capacity, Compatible with TP-Link TBL-71A2000 Battery - Walmart.com