Comparison

EJBMS PRO vs HaiDi Pro

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

EJBMS PRO

Features
Read full description

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.

About

HaiDi Pro

Monitor and manage your lithium battery packs via Bluetooth. View detailed status information, set protection parameters, and receive real-time alerts for abnormalities. Access historical alarm records for troubleshooting.

Highlights
  • Connect via Bluetooth
  • Read battery pack status
  • View voltage, current, temperature
  • Set protection parameters
  • Receive abnormality alarms
  • Historical alarm records
Features
Read full description

1. Connect the BMS Bluetooth module through the mobile phone Bluetooth to read the status information of the lithium battery pack; 2. You can view the voltage, total voltage, remaining power, real-time current, cycle times, temperature, pressure difference, etc. of each string of the battery pack, and you can set the protection parameters according to your own needs; 3. An alarm is issued when the battery pack is abnormal, which is convenient for users to check and repair, and provides historical alarm records;

Screenshots

EJBMS PRO4 screens
HaiDi Pro3 screens

Verdict

The call

The clearest difference is update cadence: HaiDi Pro at every 2 months against EJBMS PRO's every 11 months. On price, ads, in-app purchases and device support 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

EJBMS PRO ships an update every 11 months, HaiDi Pro every 2 months. The most recent releases landed on September 20, 2026 and October 3, 2026 respectively.

Scorecard1 real difference · 9 level
EJBMS PRO versus HaiDi Pro: the parameters behind the verdict, then further details
ParameterEJBMS PROHaiDi Pro
PriceFreeFree
Rating—1.0 (1 ratings) — better
Positive reviews—0.0% of reviews
Number of ratings—1 — better
Update frequencyEvery 11 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPodiPhone, iPod
Requires iOS12.012.0
Further details — not scored
Size43 MB122 MB
Age rating4+17+
DeveloperE&JtechnologyHaidi Energy Tehcnogy Co., Ltd

In-app purchases

None

EJBMS PRO

No in-app purchases

None

HaiDi Pro

No in-app purchases

Questions

Is EJBMS PRO free?
EJBMS PRO is free to download, with no in-app purchases.
Is HaiDi Pro free?
HaiDi Pro is free to download, with no in-app purchases.
Do EJBMS PRO or HaiDi Pro have ads?
Neither EJBMS PRO nor HaiDi Pro shows ads.
Which is updated more often, EJBMS PRO or HaiDi Pro?
EJBMS PRO ships an update every 11 months, and HaiDi Pro every 2 months. Most recently, EJBMS PRO was updated on September 20, 2026 and HaiDi Pro on October 3, 2026.

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