# BAT vs Epoch Li

The clearest difference is rating: BAT at 3.0 against Epoch Li's 2.6. On price, review sentiment, ratings volume and update cadence there is nothing between them.

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

BAT holds the better App Store score, 3.0 against 2.6. Both are backed by a comparable volume of ratings — 77 and 70 respectively. Written reviews complicate that: 24% of BAT's written reviews are positive against 29% of Epoch Li's, so the app with the better star average is not the one people write more warmly about.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on November 7, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | BAT | Epoch Li |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (77 ratings)](https://appshunter.io/ios/app/bat-bms/id1611741274/reviews)** | [2.6 (70 ratings)](https://appshunter.io/ios/app/epoch-li-ion/id1640434817/reviews) |
| Number of ratings | **77** | 70 |
| Positive reviews | 24.1% of reviews | **29.2% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Monetization | Free | Free |
| Size | 9 MB | 35 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Shenzhen Grenergy Technology Co.,Ltd.](https://appshunter.io/developer/1602312075) | [EDG Sales International LLC](https://appshunter.io/developer/1546168152) |

## What reviewers say

### BAT

[App page](https://appshunter.io/ios/app/bat-bms/id1611741274)

Monitor your smart Bluetooth lithium batteries wirelessly from your phone. Track key metrics like state of charge, voltage, current, and temperature. Connect to multiple batteries simultaneously and view their data.

**Highlights:** Wireless Bluetooth connection, Track cycle life, Display SOC, voltage, current, Monitor cell voltage and temperature, Connect to multiple batteries

**Features:** Vision Pro support

**In-app purchases:** none


### Epoch Li

[App page](https://appshunter.io/ios/app/epoch-li-ion/id1640434817)

Monitor your lithium-ion battery system in real-time via Bluetooth. View voltage, current, power, and internal resistance. Receive alerts for temperature, short circuits, and voltage deviations to extend battery life and enhance stability.

**Highlights:** Real-time voltage, current, power, and internal resistance display, Individual battery voltage and alarm status monitoring, Cell comparison and balancing display, Temperature and critical parameter warnings, Record of all warnings and protection events

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🔋 Outstanding battery performance and capacity
- 📱 Excellent real-time battery monitoring
- 👍 Simple and clean app interface (mentioned by one user)
- ⚡ Fast and efficient charging performance
- 💡 Provides detailed battery information (SOC, voltage, current, temp, cells)

**What reviewers complain about**

- 🐛 Frequent Bluetooth connection issues (drops, doesn't auto-connect)
- 🐛 App crashes frequently
- 🐛 Clunky and unreliable Bluetooth connectivity
- 🐛 App disconnects when minimized or switching apps
- 🐛 Does not remember previously connected devices

**Reported bugs**

- Bluetooth does not auto-connect
- Bluetooth signal frequently drops
- App crashes frequently
- App disconnects when minimized or switching apps
- App does not remember previously connected devices

**Requested features**

- Filter Bluetooth devices by MAC address prefix
- Implement BLE non-exclusive connection
- Bring back old app features (time to charge/discharge)
- Document app data and features
- Provide password for advanced settings


## Frequently asked questions

### Is BAT free?

BAT is free to download, with no in-app purchases.

### Is Epoch Li free?

Epoch Li is free to download, with no in-app purchases.

### Which has better reviews, BAT or Epoch Li?

BAT is rated higher. BAT averages 3.0 out of 5 from 77 ratings, while Epoch Li averages 2.6 from 70 ratings.

### Do BAT or Epoch Li have ads?

Neither BAT nor Epoch Li shows ads.

### Which is updated more often, BAT or Epoch Li?

BAT ships an update every 3 weeks, and Epoch Li every 3 weeks. Most recently, BAT was updated on November 7, 2026 and Epoch Li on November 3, 2026.

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