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  • Name: 48V Battery Equalizer with Display APP on Mobile Phone
  • No.: HA12

HA12 is an energy transfer battery equalizer with voltage display on mobile phone, which can be used for 2-12V  batteries in series or in parallel to keep battery bank voltage balance.  

When battery banks are in charging/discharging/free status, batteries voltage will have difference, which may cause one of batteries fail prematurely.    

HA12 will start to work when it detect there are 10mV voltage difference between four batteries. It will transfer energy from the higher voltage battery to the lower one until same totally.

Battery equalizer will improve battery’s performance and extent battery’s using time.


Product Features


» Apply to any n*(2.4V/3.6V/6V/9V/12V) battery banks;

» Using aluminum shell, for better cooling;

» Users can check battery voltage data through mobile APP;

» Energy transfer type equalizer, fast balance speed and low consumption;

» IP67, waterproof and moisture-proof;

» No need of external power supply or extra maintenance;

» Reverse polarity protection, safe and reliable.



 Technical Specification



Battery nominal voltage 

4* (2.4V/3.6V/6V/9V/12V)

Optimizing current 


Quiescent current 

5mA(12V)   1.2mA(2.4V)


62*124*27 mm


Reverse polarity protection 

Under voltage lock out 


APP Operation Instruction


Please download “Battery” APP (only for Android system now)

1. After connect battery equalizer, please turn on bluetooth on mobile phone;

2. Users can track all battery equalizers connected as following,

users can change each equalizers name for better management;


3. User can check battery voltage detailed curve by entering each equalizers.