IoT UPS Battery Monitoring System

UPS systems protect critical equipment from power outages. An IoT Battery Monitor tracks voltage, current, charge cycles, and estimates remaining backup time, alerting users before battery failure.

Why This Project Is Popular

Every office and home with UPS needs monitoring. This project teaches lead-acid battery characteristics, capacity estimation, and health monitoring. Practical for preventing unexpected outages.

Project Ideas or Guide

Monitor UPS battery health:

• Voltage Monitoring: Track battery voltage - full charge ~13.8V, low ~11.5V.
• Current Sensing: Measure charge/discharge current.
• Capacity Estimation: Integrate current over time to estimate Ah consumed.
• Temperature: Battery temperature affects health and charging.
• Backup Time: Calculate remaining backup based on current load.
• Alert System: Notify when battery weak, temperature high, or grid down.

Components Used

• ESP32
• Voltage Sensor
• ACS712 Current Sensor
• DS18B20 Temperature
• OLED Display
• Buzzer

FAQ

Q: What battery types can be monitored?

A: Lead-acid (12V, 24V) most common; Li-ion with proper voltage divider also works.

Q: How accurate is backup time estimation?

A: Depends on load consistency; typically ±20% accuracy.