KL Serials vs Balance BMS
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
KL Serials
This utility app measures various electrical parameters like voltage, current, and power. It also offers multiple protection functions, including over-voltage, over-current, and over-temperature alerts, while monitoring battery capacity in real-time.
- Measures voltage, current, power, and capacity
- Monitors watt-hours and time
- Over-voltage protection
- Over-current protection
- Over-temperature protection
- Real-time battery capacity monitoring
- Automatic current direction identification
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The KL-F series volt-ampere meter is a new type of coulomb meter that can measure various physical parameters such as voltage, current, power, charge and discharge capacity, watt-hours, and time. At the same time, it can also set parameters to achieve over-voltage protection, under-voltage protection, Multiple protection functions such as over current protection, over power protection, and over temperature protection. The meter can automatically identify the direction of the current, and can monitor the battery capacity in real time.
Balance BMS
This app allows users to connect to and manage lithium batteries via Bluetooth. It provides detailed information about battery status, helps identify and manage individual battery strings, and allows for setting and reading safety parameters. Users can also monitor and be alerted to battery faults.
- Bluetooth battery connection
- Battery status query
- Identify abnormal batteries
- Set battery protection parameters
- Monitor battery fault alarms
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1. The uniqueness of the Bluetooth name ensures that users can accurately connect and manage the corresponding lithium battery; 2. Information query management can be performed on the battery, the user can query the relevant status of each string of batteries, and replace or maintain the abnormal battery; 3. Safety setting and reading battery protection parameters, user setting parameters, you need to enter a password to modify the parameters; 4. Monitor battery fault alarms and display the current faults,and the number of faults in the battery;
Screenshots
Verdict
The clearest difference is rating: KL Serials at 4.5 against Balance BMS's 4.0. KL Serials also leads on iOS requirement (9.0 vs 12.0). Balance BMS's advantage is update cadence (every 6 weeks vs every 3 months) and ratings volume (6 vs 2). 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.
KL Serials holds the better App Store score, 4.5 against 4.0. Both are backed by a comparable volume of ratings — 2 and 6 respectively.
KL Serials ships an update every 3 months, Balance BMS every 6 weeks. The most recent releases landed on October 8, 2026 and October 21, 2026 respectively.
| Parameter | KL Serials | Balance BMS |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (2 ratings) — better | 4.0 (6 ratings) |
| Positive reviews | — | 30.8% of reviews |
| Number of ratings | 2 | 6 — better |
| Update frequency | Every 3 months | Every 6 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 9.0 — better | 12.0 |
| Further details — not scored | ||
| Size | 29 MB | 56 MB |
| Age rating | 4+ | 17+ |
| Developer | Hangzhou Junce Instruments Co., Ltd. | 所兵 邱 |
Customer experience
KL Serials
Balance BMS
In-app purchases
KL Serials
No in-app purchases
Balance BMS
No in-app purchases









