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Electrolyte circulation system

 1. Application                                                                                

The electrolyte circulation system is based on the principle 

of pumping air into the individual battery cells. This system 

prevents electrolyte stratification and the battery charge is 

optimised. The electrolyte circulation is particularly beneficial 

for short charge times, boost or opportunity charging.

 2. Function                                                                                       

The electrolyte circulation consists of a pipe system fitted 

in the cells. A diaphragm pump is fitted in the charger or  

separately mounted on the battery or vehicle. This diaphragm 

pump sends a low rate airflow into each cell which creates a 

circulating air stream inside the cell box. The air stream is 

continuous or pulsed depending on the battery voltage and 

pump type. The air supply is adjusted in accordance to the 

number of cells in the battery.

The pipe system to the individual battery cells must follow 

the existing electrical circuit. This reduces the risk of current 

leakage in the presence of electrolytic gas causing an explosion  

(EN 62485-3).

 2.1 Use with separate pipe system                                             

Air is supplied when the charger pipe system is connected to 

the battery pipe system (with blue ring).

 2.2 Use with automatic connection of the pipe system            

Connecting the charge plug with integrated air supply auto-

matically supplies air to the battery.

 2.3 Maintenance of air filter                                                            

Depending on the working conditions, the pump air filter 

should be changed at least once a year. In work areas with 

high levels of air-pollution, the filter should be checked and 

replaced more frequently.

 2.4 Repair and maintenance                                                           

The system must be checked for leakage. The charger will 

display an error message to indicate leakage.

Sometimes in the case of leakage, the characteristic charging 

curve is switched over to the characteristic standard curve 

(without electrolyte circulation).

Faulty parts and faulty pipe sections must be replaced. Only 

EnerSys original spare parts may be used, as these are 

designed for the pump air supply and will ensure correct 

functioning of the pump.

Wi-iQ

®

Wi-iQ – the electronic device – will provide indications 

according to the table below. 

Tricolour LED

Green blinking = hardware OK

Blue rapid blinking = wireless identification

Red blinking = temperature warning > 55°C

Blue LED

Rapid blinking = wireless identification

Slow blinking = voltage balance warning

OFF – Flashing = electrolyte level OK

Light is on constantly = electrolyte level low

The Wi-iQ is the electronic device that communicates  

wirelessly to download the battery key information for better 

diagnostics & service. The device is fitted to a main DC cable 

on the battery to monitor and record data of current, voltage, 

temperature and electrolyte level (via optional external 

sensor). The LEDs on the Wi-iQ provide real time status of 

battery’s condition. The information is transferred to the PC 

via USB by wireless communication.

 1. Operation                                                                                     

The Wi-iQ is suitable for use on all battery technologies

Voltage range is 24V – 80V.

The device records global data during the life of the battery. 

It will store data for 2,555 cycles (complete history stored  

by PC). The PC software program can analyze the data: state 

of charge, temperature warnings and low electrolyte level 

warnings.

 2. Clear visibility                                                                              

Selecting the Exception & Detailed Reports will provide  

information on the condition of your battery and any actions 

that are necessary. Wi-iQ Report will quickly enable you to 

get a handle on your battery fleet charging & discharging  

characteristics. With information by battery family (truck 

type), you can see depth of discharge charts, cycles, charging 

and much more.

 3. Very easy to use                                                                         

Plug in USB modem to the PC; scan the Wi-iQ and up-load 

the data. Wi-iQ Report is a PC Software running on Windows 

7, 8, XP or Vista. A USB wireless key is used for downloading 

Wi-iQ data in to a SQL database.

Tricolour LED

Blue LED

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