123SmartBMS vs Fusion BMS
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
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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.
Fusion BMS
This intelligent management system monitors battery status, collects real-time operational data, and exchanges information with external devices. It enhances the safety, usability, and lifespan of lithium battery systems by providing detailed parameter displays and critical alerts.
- Real-time voltage, current, and power monitoring
- Single cell voltage and alarm status display
- Cell comparison and balance display
- Temperature, short-circuit, over/under-voltage alarms
- Warning event logging
- Compatibility with various battery brands
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Fusion BMS is an intelligent management system that can read batteries of different brands, monitor battery status, collect, store and process information during battery operation in real time, exchange information with external devices, and solve the problem of safety and ease of use of lithium battery systems. The key issues of performance and service life can be extended to prolong the service life of the battery and enhance the stability of the battery after grouping. 1. Display real-time voltage, current, power, internal resistance and other parameter values in the form of dashboard and digital display; 2. Display the real-time voltage and alarm status of all single cells. If the reported parameter triggers the alarm value or protection value, it will prompt an alarm; 3. Comparison of each data of the cell, the voltage difference. Maximum voltage cell Minimum voltage cell. and cell balance display 4. Cell temperature warning. Over-temperature, short-circuit, over-voltage, under-voltage real-time alarm 5. Log the warnings that occur at each moment. 6. Compatible with various brands of batteries. During use, if the battery cannot be connected. Or if there are different brands and models of BMS that need to be added to the app, please feel free to contact the author to update the iteration 64977884@qq.com Fusion BMS 是一款可读取不同品牌电池的智能管理系统,实现监控电池状态,实时收集储存、处理电池运行过程中的信息,与外部设备进行信息交换,解决锂电池系统的安全性、易用性和使用寿命的关键问题,实现延长电池使用寿命,增强电池成组后的稳定性。 1. 显示实时电压、电流、功率、内阻等参数数值,以仪表盘和数字形式展示; 2. 显示所有单体电池的实时电压、告警状态若上报参数触发告警值或保护值,则提示告警; 3.电芯的每一项数据对比,电压差。最大电压电芯 最小电压电芯。以及电芯均衡的显示 4.电芯温度预警。 温度过高,短路,过压,欠压实时告警 5.记录每个时刻发生的警告。 6.兼容各种品牌的电池。 在使用过程中,如果无法连上电池。或有不同品牌型号的BMS需要加入到app内,请随时联系作者更新迭代 64977884@qq.com
Screenshots
Verdict
The clearest difference is review sentiment: 123SmartBMS at 67% against Fusion BMS's 0%. 123SmartBMS also leads on update cadence (monthly vs every 3 months). Fusion BMS's advantage is iOS requirement (11.0 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 ships an update monthly, Fusion BMS every 3 months. The most recent releases landed on October 7, 2026 and October 14, 2026 respectively.
| Parameter | 123SmartBMS | Fusion BMS |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (21 ratings) — better | — |
| Positive reviews | 66.7% of reviews — better | 0.0% of reviews |
| Number of ratings | 21 — better | — |
| Update frequency | Monthly — better | Every 3 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 16.0 | 11.0 — better |
| Further details — not scored | ||
| Size | 190 MB | 101 MB |
| Age rating | 4+ | 4+ |
| Developer | Albertronic B.V. | 江西达伙网络科技有限公司 |
Customer experience
123SmartBMS
Fusion BMS
In-app purchases
123SmartBMS
No in-app purchases
Fusion BMS
No in-app purchases








