Battery
How to Calculate ESP32 Battery Life
Learn how to estimate battery runtime using average current consumption.
2026-07-05IoTTools
Engineering Tools for IoT Developers
Battery, LoRa, Solar, Sensors and Environmental Monitoring Calculators
All Tools
Battery Calculator
Estimate battery runtime for ESP32 and IoT devices
Open Tool →Charge Time
Estimate charge time for Li-Ion, NiMH, and lead-acid batteries
Open Tool →Current Consumption
Calculate average current draw with multiple operating modes
Open Tool →Capacity Converter
Convert battery capacity between mAh, Ah, Wh, and Joules
Open Tool →Solar Sizing
Size solar panels and batteries for remote IoT
Open Tool →Voltage Drop
Calculate voltage drop over wire length for DC circuits
Open Tool →LoRa Airtime
Calculate LoRa/LoRaWAN airtime and data rate
Open Tool →Link Budget
Calculate LoRa link budget and link margin
Open Tool →Range Estimator
Estimate LoRa range using Friis path loss model
Open Tool →Payload Calculator
Calculate LoRaWAN payload limits by region and data rate
Open Tool →