Setup my outdoor V3 cameras on Battery Backup that will keep 14 V3 cameras, 3 Wireless Access Points, 3 VOIP lines and Cellular router running for approximately 21 hours.
Have a 100Ah battery connected to a power supply/charger that powers my network and cameras, ran outdoor lighting direct burial low voltage cable to the cameras carrying the battery 12 volts.
Then at each camera the voltage is regulated down to 5 volts using a 12v to 5v Micro-USB adapter cable. (this adapter will work with a input as low as 9 volts, so any voltage drop on long cable runs is covered) Amazon Link to 12v to 5v Micro-USB adapter cable If out of stock check links below
IP-67 on Amazon - 2 Pieces DC-DC Buck Converter Module 12V to 5V Adapter Compatible,Waterproof Voltage Step Down Connector (Micro USB)
E-Bay - DC/DC Module 12V to 5V Converter Micro USB
E- Bay - Micro USB Cable DC-DC Down Converter 12V to 5V Adapter
Each cable run from power supply / battery is fused for safety at 1, 2 or 3 amps depending on number of cameras on that wiring branch.
Power Supply Charger out of e-wasted equipment, Battery 100Ah, and Low Voltage Disconnect module,
This location originally had a V2 in an enclosure, the 12v to 5v adapter has been exposed to rain, snow, and heat of summer for over 2 years. Recently replaced V2 with a V3