# Battery

> Explains electrochemical cells, primary and secondary batteries, and their industrial applications. (iPhone/iPad app by Orgajja Co Ltd.)

- Source: https://appshunter.io/ios/app/battery/id398981675 (this page in markdown: same URL + `.md`)
- Developer: [Orgajja Co Ltd](https://appshunter.io/developer/368955015)
- Category: Utilities, Reference
- Price: Free with in-app purchases
- Rating: 3.50/5 from 13 App Store ratings · 87 written reviews indexed
- Age rating: 4+
- Requires: iOS 6.0 · 4 MB
- Languages: American English
- Released: 2011-01-27
- Data updated: 2026-06-09
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/battery/id398981675/reviews.md

## What is Battery?

An electrical battery is one or more electrochemical cells that convert stored chemical energy into electrical energy. Since the invention of the first battery (or "voltaic pile") in 1800 by Alessandro Volta, batteries have become a common power source for many household and industrial applications. According to a 2005 estimate, the worldwide battery industry generates US$48 billion in sales each year, with 6% annual growth.
There are two types of batteries: primary batteries (disposable batteries), which are designed to be used once and discarded, and secondary batteries (rechargeable batteries), which are designed to be recharged and used multiple times. Miniature cells are used to power devices such as hearing aids and wristwatches; larger batteries provide standby power for telephone exchanges or computer data centers.

## Key features

- Electrochemical cell principles
- Chemical to electrical energy conversion
- Primary (disposable) batteries
- Secondary (rechargeable) batteries
- Applications of batteries

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Upgrade | $0.99 | one-time |


## Recent user reviews (10 of 87)

All indexed reviews: https://appshunter.io/ios/app/battery/id398981675/reviews.md

### 3/5 — Very basic

*2015-01-23, version 3.7*

Just a page of basic information telling you how much is left in your battery and how long you can use various applications for (audio, video, web surfing etc.) there's nothing else. If I wanted to upgrade to remove the adds there's no way of doing it. There are three icons at the top of the screen but touching any of them just takes you to a page where you're asked to buy a slot machine game.

### 1/5 — Worst battery app EVER!

*2014-11-30, version 3.7*

This is the least helpful of no fewer than 20-30 battery app's. You can't even receive the basic battery saving tips that almost every other battery app offers unless you download a slot machine gaming app first, for that matter you can't get a single fact before the download and I kept looking what I must of been missing after the download because it was such a nothing tool/no help for a download that makes them money. Worst battery app every. Try Battery Doctor HD. IT actually has a diverse set of tools that are amazing, and free too... Don't waste you space, time, or encourage such bad applications to come into reality

### 2/5 — Good but

*2014-03-06, version 3.7*

Kept lagging out my iPod but it did its job so.....

### 2/5 — Not good one thing

*2014-02-18, version 3.7*

The app is pretty cool, I think that it is one of the best between battery apps, but i can not use all functions, for that I have to download one app which I don't want on my device. I don't understand, why I must download app, which I need not ? This is totally bulsh...t

### 4/5 — Thanks!

*2014-02-10, version 3.7*

It's so helpful, i have a iPod and it doesn't have the exact charge! But this app really helps

The only down side is that you have to download a slot app to customise the battery bar  4/5 stars!

### 1/5 — No!

*2014-02-04, version 3.7*

Just too many advertising links and not enough info.

### 1/5 — Needs better icon

*2013-11-12, version 3.6*

Needs better icon

### 1/5 — Deleted

*2013-10-01, version 3.6*

I tried it for my first time let it sit for about seconds, then it opened an ad then safari, then iTunes, then the App Store. It also didn't have the right percentage

### 1/5 — BOOOO!!!!!

*2013-07-07, version 3.6*

Whenever I try to open it, it crashes!😡 I've tried to reinstall the app a few times, but it's the same thing: a black screen and then a crash. If you fix this, maybe I'll rate higher.

### 3/5 — Good but not accurate

*2013-05-30, version 3.6*

I like it but it just isn't accurate

## Frequently asked questions about Battery

### What is a battery?

A battery is one or more electrochemical cells that convert stored chemical energy into electrical energy. They have been a common power source for many household and industrial applications since their invention in 1800.

### What are the different types of batteries?

There are two main types: primary batteries, which are disposable and designed for single use, and secondary batteries, which are rechargeable and can be used multiple times.

### What are batteries used for?

Batteries are used to power a wide range of devices. Miniature cells power items like hearing aids and wristwatches, while larger batteries provide standby power for critical infrastructure such as telephone exchanges and computer data centers.

### Is this app free to use?

The app is free to download and use, with the option for in-app purchases. This allows users to access additional features or content if they choose.

## Version history (last 5 releases)

### 3.7 — 2013-12-05

bug fixed

### 3.6 — 2013-05-17

Improve performance

### 3.5 — 2013-05-08

bug fixed

### 3.4 — 2013-03-13

Performance Improvement

### 3.3 — 2013-02-14

bug fixed

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All apps by Orgajja Co Ltd: https://appshunter.io/developer/368955015

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-09.*