Security Backup Power Calculator
A power cut should not switch off your security. Add your devices, choose how long you want them to keep running, and get the battery capacity, the UPS/inverter size and an indicative cost. Planning figures, not an electrical design — sizing and wiring is a licensed electrician's job.
- CCTV camera5 W
- NVR / DVR recorder25 W
- Router / internet (ONT)12 W
- PoE switch15 W
- Alarm panel10 W
- Video door phone8 W
- LED security light15 W
- Battery (50 Ah)₹6,500
- UPS / inverter (118 VA)₹2,500
Planning estimate only — real sizing depends on exact device draw, battery age and temperature, cabling and charger. If your cameras phone home over the internet, remember to back up the router too. Add surge protection, and have a licensed electrician design and install the actual system.
Related Guides — Deep-dive reading
Electrical Backup Assessment for Home Security in India
The under-appreciated gap: a power cut silently disables your cameras, NVR, alarm, gate motor, router and Wi-Fi, leaving the home undefended exactly when it may be most vulnerable. How to map the security load, test what your inverter really covers, size backup, and protect against grid surges.
SecuritySecurity Equipment Room Planning for Indian Homes
How to plan the small but critical space that houses the security brains — NVR, network switch, router, UPS, patch panel and alarm panel: where to put it, how to keep it cool, powered, dust-free, lockable and protected so an intruder cannot destroy your evidence.
SecuritySmart Home Maintenance & Troubleshooting for Indian Homes
A smart home is not a one-time purchase — it is a small fleet of computers that needs firmware updates, fresh batteries, occasional reboots and a plan for the day a manufacturer switches off the cloud. This guide gives you a maintenance calendar, a troubleshooting flow for the failures Indian homes actually see, and the UPS and security hygiene that keep it all running through power cuts and voltage swings.
Smart HomeRelated Tools — You may also find these useful
Inverter & Battery Calculator
Size a home inverter (VA) and battery (Ah) for the load you want to back up and the hours of backup you need.
Backup PowerCCTV Camera Coverage & Count Calculator
Estimate how many CCTV cameras you need, the NVR channels, storage in TB for your retention period, and an indicative all-in cost with GST.
CCTV CalculatorSecurity Cabling & PoE Planner
Estimate cable length, drops, PoE power budget, the right switch, conduit and cost for a CCTV/security cabling plan.
Cabling Planner