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  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 using a charge factor of 1.07. The electrolyte 

circulation is particularly beneficial for heavy duty use, short 

charge times, boost or opportunity charging and in high 

ambient temperatures.

  2.   Function

The electrolyte circulation consists of a pipe system fitted 

in the cells. The Aeromatic 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 

automatically 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 

original spare parts may be used, as these are designed for 

the pump air supply and  will ensure correct functioning of 

the pump.

Electrolyte circulation system 

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  or to smartphone via USB or  by wireless communication.

 1. Operation

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

Voltage range is 24V – 120V.

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

will store data for 2555 cycles (complete history stored by PC). 

The data can be analysed by Wi-iQ Report or E-Connect app, 

depending on Wi-iQ version fitted to the battery.

 2. Clear visibility

Selecting the Wi-iQ Report or E-Connect app will provide 

information on the condition of your battery and any actions 

that are necessary. Wi-iQ Report or E-Connect app 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.

See the Wi-iQ User Manual for further details.

Wi-iQ 

®

Back to the manufacturer!

Batteries with this sign must be recycled.

Batteries which are not returned for the recycling process must be disposed of as hazardous waste!

When using motive power batteries and chargers, the operator must comply with the current standards, laws,

rules, and regulations in force in the country of use!

© 2021 EnerSys. All rights reserved. Trademarks and logos are the property of EnerSys and its affiliates unless 

otherwise noted. Subject to technical modification without any prior notice. E.&O.E.

www.enersys.com

Publication no: EMEA-EN-MI-OLK-WL-0321

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