No Standalone lithium batteries are sold with the product
Input:100-240V
output:12V 2A DC jack
Battery:18650 li-ion 3*1800MH
Battery life: 500times/cycle
Capacity: 19.98WH
Backup time: 1.5-3hours
This one don't need remove no matter whether the power on or not, it just like a charger which have back up battery
DC jack:5.5*2.1mm(12V)
Weight:.300g
Application:
Security / Monitoring / Alarm