Use APKPure App
Get Battery Calculator old version APK for Android
Ta aplikacja została zaprojektowana, aby pomóc Ci wybrać baterię do swoich potrzeb.
You can calculate your inverter battery backup time and also you can know how much time to take full charge of the battery. You can easily convert watts to amps or amps to watts. You will also know how much battery Ah needs to a specific load and check your battery current percentage with the load.