Skip to main content

CCTV UPS & Battery Backup Calculator

Calculate CCTV camera, NVR, and PoE switch UPS apparent power (VA) and deep-cycle VRLA battery capacity (Ah) for power outage runtime.

Input Parameters

Try Example:
1256
W
160
116
116
jam
0.524

Calculation Results

Number of IP Cameras
16 Cameras
Power per CCTV Camera (IR Active)
7.5 Watts
Total Camera Power Load
120 Watts
Number of HDD Bays in NVR
2 HDDs
NVR Unit + HDD Power Load
36 Watts
Number of PoE Switch Units
1 Units
PoE Switch Base Power Draw
12 Watts
Total CCTV System Power Load
168 Watts
Minimum Required UPS Rating (+Margin)
312 VA
Recommended Commercial UPS Size
650 VA
Target Outage Backup Duration
4 Hours
DC Battery System Voltage
12 Volts
Required VRLA Battery Capacity
83 Ah
12V Battery Units per String
1 Units
Want to compare 2 design options side-by-side (e.g., Scenario A vs Scenario B)?
⚡ CCTV & PoE Hardware Advisory
Switch Managed PoE+ IEEE 802.3at + Kabel UTP Cat6 Pure Copper
HDD Surveillance CMR 24/7 (WD Purple / Seagate SkyHawk)

Use 24/7 CMR surveillance drives in NVRs and solid bare copper Cat6 for PoE runs exceeding 50 meters.

Material Requirement Summary (Copy-Ready)
Ringkasan Backup UPS & Baterai Aki CCTV – InfraCalc.web.id
Perangkat Aktif: 16 Kamera (@7.5W) + NVR (2 HDD) + 1 Unit Switch
Total Beban    : 168 Watt Kontinu 24/7
Target Backup  : 4 Jam tetap merekam saat listrik PLN padam
Rekomendasi UPS: Minimal 650 VA (Wajib Pure Sinewave + External Battery / DC Power Backup)
Kapasitas Aki  : 1× Aki VRLA Deep-Cycle 12V @ minimal 83 Ah (Sistem 12V DC)
2D Rack Elevation Builder

Visual 2D 19" Server Rack & Patch Panel Builder

12U Wallmount Rack 19" — 9U Used / 3U Airflow Free12U12U11U11U10U10U9U9U8U8U7U7U6U6U5U5U4U4U3U3U2U2U1U1U2U Online Sinewave Rackmount UPS2200 VA • Pure Sinewave • LCD2U2U External VRLA Battery Bank (EBM)65 Ah Deep-Cycle • Hot-Swappable2U2U Enterprise Network Video Recorder (NVR)16 Ch IP Cam • 8 TB Surveillance RAID2U1U Horizontal Brush Cable Management Panel1U1U 24-Port Cat6 Shielded Patch Panel1U1U 24-Port Gigabit PoE+ / L3 Core Switch1U
Rack Capacity & Thermal Summary
Occupied U9U / 12U
Free Airflow3U Free
Estimated Total Rack Weight± 86 kg
Rack Mounting Best Practices
  • 1U–4U (Bottom): Heavy UPS & VRLA Battery Banks mounted at the bottom to lower center of gravity.
  • Middle: Compute servers, ZFS storage arrays, and NVRs placed in the center cold-aisle zone.
  • Top: Top-of-Rack PoE switches, Cat6 patch panels, and brush organizers for overhead cable trays.
Procurement BoQ & Cost Estimator

Generate Project BoQ / Cost Estimate (RAB)

KodeMaterial & EquipmentQty (+15%)UnitUnit Price (IDR)Line Total (IDR)
UPS-UNIT
Online Pure Sinewave Rackmount UPS (2200 VA)
Pure Sinewave, PF 0.8–0.9, AVR
1UnitRp 6.800.000
BATT-VRLA
12V VRLA Deep-Cycle Battery Bank (~100 Ah Total)
Maintenance-Free VRLA Battery
2UnitRp 3.700.000
SRV-DISK
Enterprise NAS / Server Storage Drive & Railkit
CMR 7200 RPM 24/7 Enterprise Grade
4UnitRp 11.800.000
RACK-PDU
19" Server Rack Cabinet + Metered PDU + C13/C14 Cords
Includes grounding bar & roof fan unit
2(Base: 1)PaketRp 9.700.000
Equipment & Material Subtotal:Rp 32.000.000
Estimated Installation & Commissioning (10%):Rp 3.200.000
PPN (11%):Rp 3.872.000
ESTIMATED GRAND TOTAL:Rp 39.072.000

Note: Unit prices above are initial reference estimates and can be edited inline.Referensi Teknis & BoQ — Built for Network & System Engineers

Share to WhatsApp
ℹ️

Technical Accuracy Note: Calculation results are engineering estimates based on standard RFC/IEEE/ITU-T models. Actual field performance may vary due to protocol overhead, hardware specifications, and environmental factors.

🚀 Share Calculation Results or Embed on Your Site

Deep-link automatically preserves your current inputs — ideal for WhatsApp, Telegram, Reddit, or engineering docs.

How to Use This Tool

  1. Input total active CCTV cameras and specify average camera night-time power draw in Watts.
  2. Specify the number of installed NVR hard drives, active PoE switches, and desired backup runtime in hours during power outages.
  3. Select the DC battery bus voltage (12V, 24V, or 48V) to review recommended UPS VA sizing and battery bank Ampere-hour (Ah) capacities.

Worked Example: Standard 16-Camera 1080p 4-Hour Backup (12V)

Worked example: A 16-camera setup (@7.5W) with an NVR (2 HDDs) and 1 PoE switch draws a total continuous load of 168 Watts. To sustain non-stop recording for 4 hours during a blackout mandates a UPS of at least 650 VA paired with a 1× 12V VRLA battery bank rated for at least 83 Ah (12V DC system).

Example Input
Active IP Camera Count
16 Cameras
Night-Time Power per Camera
7.5 Watts
NVR Hard Drive Count
2 HDDs
PoE Switch Appliance Count
1 Units
Target Backup Runtime
4 Hours
DC Battery Bus Voltage
12V DC (1× 12V Battery - Compact Systems)
Calculated Output
Number of IP Cameras
16 Cameras
Power per CCTV Camera (IR Active)
7.5 Watts
Total Camera Power Load
120 Watts
Number of HDD Bays in NVR
2 HDDs
NVR Unit + HDD Power Load
36 Watts
Number of PoE Switch Units
1 Units
PoE Switch Base Power Draw
12 Watts
Total CCTV System Power Load
168 Watts
Minimum Required UPS Rating (+Margin)
312 VA
Recommended Commercial UPS Size
650 VA
Target Outage Backup Duration
4 Hours
DC Battery System Voltage
12 Volts
Required VRLA Battery Capacity
83 Ah
12V Battery Units per String
1 Units
Material Requirement Summary (Copy-Ready)
Ringkasan Backup UPS & Baterai Aki CCTV – InfraCalc.web.id Perangkat Aktif: 16 Kamera (@7.5W) + NVR (2 HDD) + 1 Unit Switch Total Beban : 168 Watt Kontinu 24/7 Target Backup : 4 Jam tetap merekam saat listrik PLN padam Rekomendasi UPS: Minimal 650 VA (Wajib Pure Sinewave + External Battery / DC Power Backup) Kapasitas Aki : 1× Aki VRLA Deep-Cycle 12V @ minimal 83 Ah (Sistem 12V DC)

Core Concept & Engineering Notes

The operational integrity of physical security closed-circuit television (CCTV) systems depends fundamentally on continuous, zero-transfer-time electrical power backup during main utility outages. During commercial burglaries or deliberate perimeter sabotage, perpetrators frequently sever the facility's main electrical breakers first. If IP cameras, PoE switches, and NVR recording appliances lose power instantly, vital forensic evidence is irrevocably lost. Sizing an Uninterruptible Power Supply (UPS) architecture for video surveillance introduces unique operational demands distinct from typical office workstations. Surveillance loads operate continuously around the clock with steady base consumption and night-time current surges driven by infrared illumination arrays. Consumer off-the-shelf UPS units equipped with tiny internal batteries typically sustain runtime for merely five to fifteen minutes, falling drastically short of standard commercial requirements demanding two to eight hours of continuous recording resilience. Consequently, surveillance integrators mandate Online Double Conversion or Line-Interactive Pure Sinewave UPS systems featuring external DC battery bus connectivity. When sizing deep-cycle VRLA (Valve Regulated Lead Acid) battery banks, engineers must rigorously factor an 85% DC-to-AC inverter conversion efficiency alongside an 80% Depth of Discharge (DoD) threshold to protect lead-acid battery plates from irreversible chemical sulfation and capacity degradation. This calculator models complete CCTV system power loads, recommended UPS apparent power VA ratings, and mandatory battery ampere-hour (Ah) capacities.

How It Was Calculated (Formulas & Steps)

Frequently Asked Questions (FAQ)

Why are standard desktop office UPS units unsuitable for CCTV installations?

Standard consumer UPS units are designed exclusively for 5–10 minutes of runtime to allow graceful operating system shutdown. Furthermore, budget units output simulated modified sinewaves, which generate harmonic distortion, electrical hum, and premature failure across sensitive PoE switch power supplies.

What is the difference between 12V, 24V, and 48V battery bus systems on a UPS?

Higher DC bus voltages (e.g. 48V DC constructed by four 12V batteries in series) divide current proportionally for an identical power load. This substantially reduces resistive I²R heat generation in battery cables and boosts inverter efficiency across large CCTV deployments.

Why is battery Depth of Discharge (DoD) capped at a maximum of 80%?

Discharging lead-acid (VRLA/AGM) batteries down to 100% capacity triggers irreversible lead sulfation across internal plates, degrading operational lifespan from hundreds of cycles down to a few dozen. Limiting discharge to 80% DoD preserves battery health over 3 to 5 years.

Related Calculators

View All CCTV, PoE & Fiber Tools →
Server UPS VA/kVA & Battery Runtime Calculator

Calculate server UPS capacity (kVA/VA), VRLA battery runtime (Ah), and 24/7 monthly electricity cost with 25% safety margin and power factor.

PoE Cable Voltage Drop Calculator

Calculate PoE Cat6, Cat5e, and CCA cable voltage drop, delivered terminal voltage, safe run distances, and night-time infrared reboot risks.

CCTV NVR Storage Capacity & Bandwidth Calculator

Calculate CCTV NVR storage capacity (TB), network ingress bandwidth Mbps, recording retention days, PoE budgets, and surveillance HDD recommendations.

CCTV Lens Selection & Field of View Calculator

Calculate CCTV lens focal length recommendations (2.8mm, 4mm, 6mm, 12mm), field of view coverage width, and DORI pixel density per target distance.

CCTV DORI Distance Calculator (EN 62676-4)

Calculate EN 62676-4 CCTV DORI detection, observation, recognition, and facial identification reach distances based on sensor resolution and lens optics.

CCTV Installation Material BOM Estimator

Estimate CCTV installation material Bill of Materials (BOM): Cat6 UTP cable boxes, RJ45 modular plugs, junction boxes, conduit pipes, and cable ties.

Complete CCTV, PoE & Fiber Directory →

References & Notes

Last updated: Technically Verified · Industry Standard

Note: Results above are mathematical estimates based on standard formulas. Always verify against official vendor documentation and site conditions before production deployment.

🔗Related Scenarios & Companion Calculators

Browse All 30+ Scenarios →

⚡ Ready-to-Use Scenario Presets:

16x 2MP Cameras (30 Days) = 6 TB HDD (H.265)→
16-Camera CCTV Hard Drive Storage for 30 Days 24/7 Recording (H.265 vs H.264)

How much HDD storage do 16 1080p CCTV cameras need for 30 days 24/7? Compare H.265 (~4.2 TB) vs H.264 (~8.4 TB) NVR requirements.

8x 2MP Cameras (30 Days) = ~2.1 TB (Use 4 TB HDD)→
8-Camera CCTV Hard Drive Size for 30 Days 24/7 Recording

Calculate exact HDD size for 8 CCTV cameras recording 30 days 24/7. Requires ~2.1 TB with H.265 (use a 4 TB HDD).

🛠️ Sibling Calculators in this Category:

CCTV Lens Selection & Field of View Calculator

Calculate CCTV lens focal length recommendations (2.8mm, 4mm, 6mm, 12mm), field of view coverage width, and DORI pixel density per target distance.

CCTV DORI Distance Calculator (EN 62676-4)

Calculate EN 62676-4 CCTV DORI detection, observation, recognition, and facial identification reach distances based on sensor resolution and lens optics.

PoE Cable Voltage Drop Calculator

Calculate PoE Cat6, Cat5e, and CCA cable voltage drop, delivered terminal voltage, safe run distances, and night-time infrared reboot risks.

CCTV NVR Storage Capacity & Bandwidth Calculator

Calculate CCTV NVR storage capacity (TB), network ingress bandwidth Mbps, recording retention days, PoE budgets, and surveillance HDD recommendations.

🔬 Scientific Methodology & Normative Verification

Engineering Sensitivity Analysis, Response Curve & Technical Citation

✓ Calibrated to ISO/IEC/IEEE/TIA Clauses

1. 1. 3-Point Engineering Sensitivity & Tolerance Envelope

Comparative evaluation across theoretical laboratory bounds (0% loss), current nominal operating point, and conservative field safety bounds (±15% thermal/aging derating).

Evaluated Parameter Ideal Theoretical Bound Nominal Operating Point Conservative Safety Bound (±15%) Engineering Derating Rule
Number of IP Cameras 14.4 16 18.4 Engineering Safety Margin (+15% Overhead)
Power per CCTV Camera (IR Active) 6.75 7.5 8.63 Engineering Safety Margin (+15% Overhead)
Total Camera Power Load 108 120 138 Engineering Safety Margin (+15% Overhead)
Number of HDD Bays in NVR 1.8 2 2.3 Engineering Safety Margin (+15% Overhead)
NVR Unit + HDD Power Load 32.4 36 41.4 Engineering Safety Margin (+15% Overhead)

2. 2. Mathematical Function Curve & Operating Coordinate (x₀, y₀)

MATHEMATICAL RESPONSE CURVE: NUMBER OF IP CAMERAS VS NUMBER OF IP CAMERAS Conservative Engineering Bound (+15% Safety Margin) 6.4 9.6 12.8 16 19.2 22.4 25.6 (x₀=16, y₀=16) Variabel Independen (x): Number of IP Cameras

3. 3. Physical Constants & Normative Standard Clauses

D_Identify = 250 px/m BS EN 62676-4:2015 (IEC 62676-4)

Minimum Horizontal Pixel Density for Identification (DORI)

Clause 6.5 & Table A.1 (25 / 62 / 125 / 250 px/m) — Video surveillance standard specifies Detection=25 px/m, Observation=62 px/m, Recognition=125 px/m, Identification=250 px/m.

R_loop(Cat6, 20°C) = 14 Ω/100m ANSI/TIA-568.2-D & IEEE 802.3bt

DC Loop Resistance for 23 AWG Solid Copper Cat6

Clause 6.4.1 / Table 145-1 — Nominal 23 AWG solid copper loop resistance at 20°C is 14.0 Ω/100m (TIA maximum ceiling is 18.8 Ω/100m).

α_Cu(20°C) = 0.00393 °C⁻¹ IEC 60028

Temperature Coefficient of Resistance for Copper

International Annealed Copper Standard — Used in thermal derating equation: R(T) = R_20 × [1 + 0.00393 × (T - 20)].

4. 4. Independent Technical & Academic Citation (IEEE / APA 7th / BibTeX / LaTeX)

Use the standard citation formats below to reference this computational methodology in engineering specifications, audit reports, or academic papers.

Format IEEE & APA 7th Edition

[IEEE] KalkuNet Engineering Team, "CCTV UPS & Battery Backup Calculator — Standard Engineering Computational Instrument," KalkuNet Technical Suite, 2026. [Online]. Available: https://kalkunet.com/en/tools/cctv-ups-calculator. [Accessed: 2026-11-08].

[APA 7th] KalkuNet Engineering Team. (2026). CCTV UPS & Battery Backup Calculator (Production release 2026-11-08) [Engineering computational software]. KalkuNet. https://kalkunet.com/en/tools/cctv-ups-calculator

BibTeX & LaTeX Derivation Snippet
@software{kalkunet_cctv_ups_calculator_2026,
  author = {{KalkuNet Engineering Team}},
  title = {{CCTV UPS & Battery Backup Calculator --- KalkuNet Engineering Suite}},
  year = {2026},
  publisher = {KalkuNet.com},
  url = {https://kalkunet.com/en/tools/cctv-ups-calculator},
  urldate = {2026-11-08}
}

% LaTeX Engineering Derivation — Generated via https://kalkunet.com/en/tools/cctv-ups-calculator
\begin{equation}
  \text{Model: } Total System Load (W) = (Cameras × Power W) + (NVR Base 18W + HDDs × 9W) + (PoE Switches × 12W)
\end{equation}
% Parameter Input Terukur: camCount = 16, \; camWatt = 7.5, \; nvrHddCount = 2, \; poeSwitches = 1
% Hasil Evaluasi Numerik : camCount = \mathbf{16}, \; camWatt = \mathbf{7.5}, \; totalCamsWatt = \mathbf{120}