KG Serials vs EnerKey
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
KG Serials
This utility measures electrical parameters like voltage, current, and power. It offers multiple protection functions and real-time battery monitoring on a color LCD. The app also supports data export and remote control via mobile or PC.
- Measures voltage, current, power, capacity
- Multiple protection functions (over/under voltage, over current)
- Real-time battery monitoring
- Color LCD display
- Voltage and current curve display
- Mobile app and PC control
- Firmware updates
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The VAG series volt-ampere meter is a new type of coulomb counter that can measure various physical parameters such as voltage, current, power, charge and discharge capacity, watt-hours, time, etc. It can also set parameters to realize multiple protection functions such as over voltage protection, under voltage protection, over current protection, overpower protection, over temperature protection and time limit protection.The meter can automatically identify the direction of the current, and can monitor the battery capacity in real time and display the measured data in use color LCD screen. The VAG series voltage and current meters add voltage and current curve display and export functions on the basis of the original functions. At the same time, the mobile phone APP and host computer can be used to control, and the firmware can also be updated and upgraded in real time.
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
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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 review sentiment: EnerKey at 75% against KG Serials's 0%. KG Serials's advantage is rating (3.4 vs 3.0) and update cadence (monthly vs every 2 months). On price, ratings volume, ads and in-app purchases 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.
KG Serials holds the better App Store score, 3.4 against 3.0. Both are backed by a comparable volume of ratings — 7 and 3 respectively. Written reviews complicate that: 0% of KG Serials'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.
KG Serials ships an update monthly, EnerKey every 2 months. The most recent releases landed on October 7, 2026 and September 25, 2026 respectively.
| Parameter | KG Serials | EnerKey |
|---|---|---|
| Price | Free | Free |
| Rating | 3.4 (7 ratings) — better | 3.0 (3 ratings) |
| Positive reviews | 0.0% of reviews | 75.0% of reviews — better |
| Number of ratings | 7 — better | 3 |
| Update frequency | Monthly — better | Every 2 months |
| 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 | 30 MB | 31 MB |
| Age rating | 4+ | 4+ |
| Developer | Hangzhou Junce Instruments Co., Ltd. | Shenzhen Jinwei Power Source Technology Co., Ltd |
Customer experience
KG Serials
EnerKey
In-app purchases
KG Serials
No in-app purchases
EnerKey
No in-app purchases








