IoT Energy Estimator
A suite of professional engineering calculators and AI utilities. Free, private, and designed for deep tech analysis.
Calculate Battery Autonomy
Simulate battery life for deep-sleep IoT devices with industrial-grade physics models including self-discharge, temperature derating, and efficiency losses.
IoT Battery Life Calculator Pro
Physics-based energy modeling with Arrhenius temperature compensation and real-time temperature impact analysis
Hardware Configuration
Operation Profile
Analysis Visualizations
Battery Capacity Over Time
Temperature Impact Analysis
Compare up to 3 different battery configurations side-by-side. The winner is automatically highlighted.
Quick-start with common IoT and drone device configurations. Click any preset to load it into the calculator.
Professional-Grade Analysis
Unlike simple calculators, we model real battery physics
Physics-Based Models
Month-by-month self-discharge simulation, chemistry-specific temperature curves, and protocol connection spike modeling for <10% prediction error.
- → Temperature derating coefficients
- → Capacity degradation over time
- → Radio transmission spikes
Advanced Configuration
Model parallel/series battery packs, voltage regulator efficiency, and complex duty cycle profiles for production-accurate estimates.
- → Multi-battery configurations
- → Buck/LDO efficiency modeling
- → Custom sleep/wake profiles
Comparison & Reports
Compare up to 3 configurations side-by-side with automatic winner detection. Export professional PDF reports for documentation.
- → Multi-config comparison mode
- → Capacity degradation charts
- → One-click PDF export
Comprehensive Technology Support
Any protocol, any battery, any configuration
📡 Communication Protocols
- • WiFi (ESP32, ESP8266, Pico W)
- • Bluetooth BLE (nRF52, ESP32-C3)
- • LoRaWAN (SX1262, SX1276)
- • Cellular (NB-IoT, LTE-M, GSM)
- • Zigbee & Thread Mesh
- • Sigfox LPWAN
🔋 Battery Chemistries
- • Li-SOCl₂ (Industrial 10+ year)
- • Li-Ion 18650 Cells
- • LiPo Flat Packs
- • Alkaline AA/AAA
- • Lithium Iron Disulfide
- • NiMH Rechargeable
- • Coin Cells (CR2032, CR123)
🎯 Device Presets
- • 🌡️ Weather Station
- • 🚪 Door/Window Sensor
- • 💧 Soil Moisture Monitor
- • 📍 GPS Asset Tracker
- • 🏭 Industrial Sensor
- • 🌲 Wildlife Camera
Real-World Applications
From agriculture to industrial monitoring
Smart Agriculture
Soil moisture sensors, weather stations, and livestock trackers with 3–5 year battery life using Li-SOCl₂ + LoRa.
Industrial Monitoring
Vibration sensors, temperature monitors in manufacturing with extreme conditions and 5–10 year autonomy.
Smart Buildings
Occupancy sensors, door monitors with predictable 2–4 year replacement schedules using coin cells + BLE.
Why Accuracy Matters
Most calculators use oversimplified math. We use industrial physics.
❌ Simple Calculators
- Ignore self-discharge
Can overestimate by 40%+ - Constant capacity
Miss –50% at 0°C for alkaline - No connection spikes
WiFi uses 2–3× during handshake - 100% efficiency assumed
Regulators waste 10–20% as heat
✅ WireUnwired Pro
- Month-by-month simulation
Self-discharge compounds properly - Chemistry-specific curves
Different derating per battery type - Protocol spike modeling
Cellular 2.5×, WiFi 1.8×, BLE 1.3× - Regulator efficiency
Buck vs LDO loss calculation
📊 Validated Against Real Deployments
Our calculator has been validated against 50+ production IoT systems across agricultural sensors, industrial monitoring, and smart-city infrastructure. Average prediction error: <10% when sleep current is accurately measured.
Frequently Asked Questions
❓ How accurate is this calculator?
<10% error compared to real-world deployments with accurate inputs. The biggest factor is sleep current — always measure your actual device.
We use physics-based models including month-by-month self-discharge, chemistry-specific temperature curves, protocol connection spikes, and voltage regulator efficiency.
❓ Best battery for 5+ year IoT deployments?
Li-SOCl₂ (Lithium Thionyl Chloride) is the gold standard:
- Extremely low self-discharge (0.1% vs 3–5% for alkaline)
- Excellent temperature range (–40°C to +85°C)
- High energy density, stable voltage
- Available in AA and D-cell sizes
For rechargeable or high-current needs, use LiPo/Li-Ion. Avoid alkaline in cold.
❓ LoRa vs WiFi vs Cellular — which saves battery?
Same battery (2400 mAh), same duty cycle (5 s active / 60 min sleep):
- LoRa SX1262: ~5.2 years (22 mA active)
- BLE nRF52: ~4.8 years (8 mA active)
- WiFi ESP32: ~0.3 years (240 mA active)
- Cellular NB-IoT: ~0.2 years (250 mA + spikes)
Winner: LoRa — low power + 10 km+ range.
❓ Can I export my calculations?
Yes — click "Export PDF Report" for a professional report with config, results, metrics, and timestamp. Perfect for docs and client proposals.
Start Calculating Battery Life
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