QCBMS vs EJBMS PRO
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
QCBMS
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FEATURES * The Best Utility tool for monitoring your lithium battery. * Realtime check PACK, privacy information, and the working status. * The phone required bluetooth4.0 or Above. *Tracking Cycle Life on each battery. *Displays State Of Charge (SOC) percentage with graphics. *Display total voltage, each cell voltage, charging or discharging current, temperature, etc. * Measuring distance: Less than or equal to 7m. * Due to the Bluetooth hardware feature, the APP only can connect with one battery every time. * If you want to connect this battery with another mobile phone, pls exit this program. * As the iOS system openness, different cellphone manufacturer will have their own customized feature on the cellphone . So the APP can not work well on some cellphones due to compatibility issues.
EJBMS PRO
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The Apps main feature is to monitor the details of the E&J Lithium batteries. It can monitor multiple batteries at the same time, showing the main data details after series or parallel, showing details of each battery. Re-nameable each battery pack and auto-connect. The Phone via Bluetooth connectivity will monitor the following information from the battery. Battery Capacity Battery Voltage Battery Current (Amps) Battery State of Charge (SOC) Battery Status Individual Cell Voltage Battery Temperature Battery Cycles Please Note: Only one mobile device can connect to the battery at any one time. If you wish to connect a second device to the battery, you must close the program on the first device. This app is only applicable to the E&J Lithium batteries and will not work with any other brand/type of Bluetooth battery monitoring system, nor will any other branded app work with the E&J lithium battery.
Screenshots
Verdict
The clearest difference is update cadence: QCBMS at every 2 weeks against EJBMS PRO's every 11 months. QCBMS also leads on iOS requirement (9 vs 12.0). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
QCBMS ships an update every 2 weeks, EJBMS PRO every 11 months. The most recent releases landed on September 19, 2026 and September 20, 2026 respectively.
| Parameter | QCBMS | EJBMS PRO |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 weeks β better | Every 11 months |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 9 β better | 12.0 |
| Further details β not scored | ||
| Size | 28 MB | 43 MB |
| Age rating | 4+ | 4+ |
| Developer | ε°ηΊ’ εΎ | E&Jtechnology |
In-app purchases
QCBMS
No in-app purchases
EJBMS PRO
No in-app purchases









