# SEC Smart Battery vs Battery Master 12V

The clearest difference is rating: SEC Smart Battery at 5.0 against Battery Master 12V's 3.4. SEC Smart Battery also leads on iOS requirement (8.0 vs 15.6). Battery Master 12V's advantage is ratings volume (5 vs 1). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

SEC Smart Battery holds the better App Store score, 5.0 against 3.4. That said, the two scores are not equally well evidenced: Battery Master 12V has 5 ratings behind it against 1, so its average is the more settled of the two.

SEC Smart Battery ships an update every 2 months, Battery Master 12V every 6 weeks. The most recent releases landed on October 24, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | SEC Smart Battery | Battery Master 12V |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/sec-smart-battery/id1228505584/reviews)** | [3.4 (5 ratings)](https://appshunter.io/ios/app/battery-master-12v/id1480710112/reviews) |
| Number of ratings | 1 | **5** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 6 weeks** |
| Monetization | Free | Free |
| Size | 7 MB | 39 MB |
| Requires iOS | **8.0** | 15.6 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SEC Industrial Battery Group](https://appshunter.io/developer/1228505583) | [Shenzhen Leagend Optoelectronics Co., Ltd.](https://appshunter.io/developer/6798210621) |

## What reviewers say

### SEC Smart Battery

[App page](https://appshunter.io/ios/app/sec-smart-battery/id1228505584)

Monitor your SEC MICROLYTE 12V ML Series lithium-ion battery with this utility tool. It provides real-time monitoring data and requires Bluetooth connectivity. Note that a device can only connect to one battery at a time.

**Highlights:** Lithium-ion battery monitoring, Bluetooth connectivity, Detection distance up to 5m, Single device-to-battery connection

**Features:** macOS Compatibility

**In-app purchases:** none


### Battery Master 12V

[App page](https://appshunter.io/ios/app/battery-master-12v/id1480710112)

This tool detects and tests lead-acid batteries, assessing CCA and health. It calculates remaining battery life based on temperature and CCA data. Users can also test cranking and charging systems, with all results shareable and printable.

**Highlights:** Lead-acid battery detection, Test battery CCA and health, Calculate available use life, Test cranking system, Test charging system, Share and print test results

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SEC Smart Battery free?

SEC Smart Battery is free to download, with no in-app purchases.

### Is Battery Master 12V free?

Battery Master 12V is free to download, with no in-app purchases.

### Which has better reviews, SEC Smart Battery or Battery Master 12V?

SEC Smart Battery is rated higher. SEC Smart Battery averages 5.0 out of 5 from 1 ratings, while Battery Master 12V averages 3.4 from 5 ratings.

### Do SEC Smart Battery or Battery Master 12V have ads?

Neither SEC Smart Battery nor Battery Master 12V shows ads.

### Which is updated more often, SEC Smart Battery or Battery Master 12V?

SEC Smart Battery ships an update every 2 months, and Battery Master 12V every 6 weeks. Most recently, SEC Smart Battery was updated on October 24, 2026 and Battery Master 12V on October 17, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*