Techinal Mini UPS Battery Backup with Battery Protection Board for Wifi Router 12V-2A - Walmart.com
Wifi Router 4G 3G Modem 300Mbps Access Point Openwrt 12V GSM LTE USB Wan 4XLAN 4X
DEWALT 20V MAX XR Cordless Brushless Compact Router, (1) 20V MAX Compact Lithium-Ion 3.0Ah Battery, and 12V-20V MAX Charger DCW600BW230C - The Home Depot