Bring life back to your wifi hotspot 8800L 7730 Battery. Are you having a horrible time with your device battery? Is it no longer taking a charge or is draining to quickly? was not holding a charge or contantly dying out ? Then this is the right high capacity replacement battery to fix your mobile MiFi hotspot device power issues work as long like new again. Battery capacity of 4400mAh 16.7Wh 3.8V. GRADE A high quality batteries. Built-in smart chip to prevent over charging over discharging and overheating protection short circuit protection high safety performance long service life. Meanwhile WirelessFinest brand batteries are tested under strict quality control standards and certified by CE FCC UL PSE ROHS. Ensures efficient and safe use. Compatible for Verizon Wireless Novatel Mifi Jetpack 7730L P/N 40123117 Mobile Wifi Hotspot.