123SmartBMS vs EnerKey
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
123SmartBMS
This app monitors and manages lithium battery packs, ensuring optimal condition and extended lifespan. It tracks cell voltages, temperatures, and currents, while balancing cells during charging. Connect via Bluetooth to view real-time battery status and control charging/discharging.
- Monitors cell voltages and temperatures
- Tracks in- and outgoing currents
- Balances cells during charging
- Bluetooth connectivity for real-time data
- Controls charge/discharge signals
- Extends battery pack lifespan
Read full descriptionHide full description
123\SmartBMS is an easy to use yet advanced, modular BMS to keep your lithium batteries in perfect condition, increasing the lifespan of the battery pack. The system measures important data like cell voltages, cell temperatures and in- and outgoing currents. It also balances all cells to the same voltage during charging. The BMS supervises the whole battery pack and has two signal relays to indicate “allow to charge” and “allow to discharge”. These signal relays can control chargers and inverters with “enable”/”disable” signals or by connecting an energy efficient power relay to the signal relay. An example is the 123\SmartRelay. Easily connect your phone to the BMS using Bluetooth to see relevant information including state of charge, energy consumed, energy stored, in- and outgoing current, cell voltages and temperatures. With 123\SmartBMS, your battery pack is in safe hands.
EnerKey
Monitor and control your lithium battery system in real-time. View current status, historical data, and adjust protective parameters to ensure safe operation. Receive instant alerts for any abnormal conditions.
- Real-time battery monitoring
- Historical data inquiry
- Parameter setting
- Alarm notifications
- Voltage, current, and temperature display
Read full descriptionHide full description
Enerkey lithium battery management system (BMS) provides a range of convenient management and control functions that allow users to perform real-time monitoring, data querying, and parameter setting of their lithium battery via the app. Real-time monitoring: Users can view real-time data such as voltage, current, and temperature of the lithium battery BMS through the app, allowing them to promptly understand the battery's operational status. Historical data inquiry: Users can check the historical operation data of the lithium battery BMS, including battery capacity, charge times, cycle times, and temperature data, helping them better understand the usage of the battery and perform timely maintenance. Parameter setting: Users can set various parameters of the lithium battery BMS through the app, including overcharge protection, over-discharge protection, temperature protection, etc., to ensure the safe operation of the battery. Alarm notification: Users can receive real-time alarm notifications through the app when the lithium battery BMS encounters abnormal conditions, enabling them to handle the issue promptly and prevent accidents. We are committed to providing users with the best experience possible. Download and use our app today!
Screenshots
Verdict
The clearest difference is rating: 123SmartBMS at 4.5 against EnerKey's 3.0. 123SmartBMS also leads on update cadence (monthly vs every 2 months) and ratings volume (21 vs 3). EnerKey's advantage is review sentiment (75% vs 67%) and iOS requirement (12.0 vs 16.0). On price, ads, in-app purchases and monetization model there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
123SmartBMS holds the better App Store score, 4.5 against 3.0. That said, the two scores are not equally well evidenced: 123SmartBMS has 21 ratings behind it against 3, so its average is the more settled of the two. Written reviews complicate that: 67% of 123SmartBMS's written reviews are positive against 75% of EnerKey's, so the app with the better star average is not the one people write more warmly about.
123SmartBMS ships an update monthly, EnerKey every 2 months. The most recent releases landed on September 20, 2026 and June 1, 2026 respectively.
| Parameter | 123SmartBMS | EnerKey |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (21 ratings) — better | 3.0 (3 ratings) |
| Positive reviews | 66.7% of reviews | 75.0% of reviews — better |
| Number of ratings | 21 — better | 3 |
| Update frequency | Monthly — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 16.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 190 MB | 31 MB |
| Age rating | 4+ | 4+ |
| Developer | Albertronic B.V. | Shenzhen Jinwei Power Source Technology Co., Ltd |
Customer experience
123SmartBMS
EnerKey
In-app purchases
123SmartBMS
No in-app purchases
EnerKey
No in-app purchases







