# BaTTimer: Battery Calculator

> Battery runtime calculator: estimate battery life and charge time

Canonical page: [https://chrome-stats.com/d/com.battimer.battimer](https://chrome-stats.com/d/com.battimer.battimer)

## Overview

- **ID:** `com.battimer.battimer`
- **Platform:** Android
- **Type:** Android app
- **Status:** Available
- **Publisher:** Joostafer
- **Category:** TOOLS
- **Downloads:** 251
- **Version:** 1.1.1
- **Last updated:** 2026-04-01
- **First published:** 2026-04-01
- **Publisher country:** UA
- **Size:** 25 MB
- **Data as of:** 2026-09-16
- **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.battimer.battimer)
- **Website:** [https://joostafer.github.io/privacy/battimer.html](https://joostafer.github.io/privacy/battimer.html)
- **Privacy policy:** [https://joostafer.github.io/privacy/battimer.html](https://joostafer.github.io/privacy/battimer.html)

## Description

BaTTimer — battery runtime calculator and battery life estimator for discharge and charge.<br><br>Calculate how long your battery will last under load or how long it takes to charge. This battery calculator supports LiFePO4, AGM, GEL, lead-acid and other battery types.<br><br>Enter battery voltage (12V / 24V / 36V / 48V), capacity (Ah), and set minimum discharge level. Choose discharge or charge mode and input power or current in watts or amps. The app estimates battery runtime and shows a countdown timer.<br><br>BaTTimer helps you avoid deep discharge and understand battery charge time using a simple and practical battery runtime calculator.<br><br>Key features:<br><br>• Battery runtime calculator (discharge &amp; charge)<br>• Battery life estimation based on load<br>• Voltage, capacity, and discharge limit settings<br>• Countdown timer for battery usage<br>• Power input in watts or amps<br>• Notifications before battery reaches limit<br>• Profiles for multiple battery setups<br>• Widget with active timer<br>• Clean and simple UI<br><br>Ideal for:<br><br>• Solar systems and off-grid setups<br>• UPS and backup batteries<br>• DIY electronics<br>• RV, boats, camping<br>• Power banks and external batteries<br><br>This battery calculator is useful for engineers, hobbyists, and anyone working with battery-powered systems.<br><br>Note: Results are estimates and may vary depending on real-world conditions.

## Rankings

- #1,630,721 — Overall

## Permissions and access

### Permissions

- `android.permission.ACCESS_ADSERVICES_AD_ID`
- `android.permission.ACCESS_ADSERVICES_ATTRIBUTION`
- `android.permission.ACCESS_ADSERVICES_TOPICS`
- `android.permission.ACCESS_NETWORK_STATE`
- `android.permission.FOREGROUND_SERVICE`
- `android.permission.INTERNET`
- `android.permission.POST_NOTIFICATIONS`
- `android.permission.RECEIVE_BOOT_COMPLETED`
- `android.permission.REQUEST_IGNORE_BATTERY_OPTIMIZATIONS`
- `android.permission.SCHEDULE_EXACT_ALARM`
- `android.permission.USE_EXACT_ALARM`
- `android.permission.VIBRATE`
- `android.permission.WAKE_LOCK`
- `com.android.vending.BILLING`
- `com.android.vending.CHECK_LICENSE`
- `com.battimer.battimer.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION`
- `com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE`
- `com.google.android.gms.permission.AD_ID`

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Source: [Chrome-Stats](https://chrome-stats.com/d/com.battimer.battimer)