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The hawker perfect plus motive power batteries provide a high level of power and reliability for all industrial truck applications, from simple applications with a low capacity loading up to heavy duty multi-shift applications.

Why “plus”?

Compared to the former perfect range, the Hawker perfect plus cells provide higher efficiency in discharge achieved by advanced components used in the construction of the positive plates. The sizing of the positive and negative plates has been optimized according to the volume available in the cell boxes. The process of filling the positive plates has been improved. All these technical enhancements have enabled an increase in the cell capacities while keeping the same exterior dimensions. The Hawker perfect plus range is at the highest technology level and has a very high efficiency. This improvement integrates the European harmonization of the DIN and BS ranges. This range meets the dimensions of standards DIN/EN 60254 and IEC 254-2.

Cell construction

All Hawker perfect plus cells use the robust tubular vented technology (PzS). The positive electrodes are diecast tubular plates (PzS) and advanced components used in their manufacture provide increased efficiency. The negative plates are flat pasted plates. The separator is of the microporus type. The cell box and lid are made from high impact, temperature resistant polypropylene and are heat-seal welded to prevent electrolyte leakage.


The special design of the terminals ensures that no electrolyte can leak from the cells.

Cell connectors

The cells are joined by fully insulated flexible and halogen free connectors. The bolt-on connectors allow cells to be replaced or moved without excessive work.

Flip top plugs

Flip top plugs with electrolyte level markings are fitted. These allow adequate escape of charging gasses and provide a safe anti-surge baffle for the electrolyte during operation.


The lid is equipped with holes for installation of electrolyte mixing system, these can also be used for temperature sensor tests.

Hawker aquamatic

The aquamatic water refill system makes it possible to top up all the cells from one central point through an integrated system. The aquamatic vent plugs automatically ensure the optimum filling level and also allow the measurement of electrolyte specific gravity. The aquamatic kit can be expertly fitted at the factory and on site.

Definition of application fields

1-       low duty

single shift with light operation and discharge lower than 60% C5. electrolyte TC about 30C

2-       Normal duty

Single shift with discharge up to 80% C5

3-       Heavy duty

-          Single shift with discharges of 80%C5 and high discharging currents.

-          Opportunity charging to augment the useable capacity

-          Multi-shift operation with or without battery changes

-          High ambient temperature

Electrolyte mixing

The Hawker electrolyte circulation system, using the AirLift principle, consists of a pipe system which is fitted in the cells. A diaphragm pump sends a low rate airflow into the cell which creates a circulating air stream inside the cell box. This system prevents electrolyte stratification and the battery charging is optimized.



Hawker perfect plus

-          increased capacities in same dimensions

-          higher running time and battery availability

-          European harmonization of capacities and sizes in DIN and BS ranges


Hawker perfect plus with electrolyte mixing

-          no electrolyte and temperature stratification during partial or complete charging process

-          optimal charge acceptance by positive and negative electrodes and therefore uniform plate stressing

-          charging time shorter by up to 30% and energy savings of up to 20% compared with conventional charging processes

-          minimized gassing phase, reduced sludging and water consumption reduced by up to 70%

-          temperature rise during charging is up to 10C lower, allowing use in warm ambient conditions

-          more rapid battery availability for the same nominal charging current due to shorter charging time and therefore higher battery utilization rate in multiple shift operation

-          higher performance and longer battery service life in heavy operation particularly with opportunity charging

-          longer maintenance intervals, lower maintenance costs.













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