Exide Technologies Gmbh

Froetek Vermoegensverwaltung Gmbh

Deta-Akkumulatorenwerk Gmbh

Frotek-Vermogensverwaltung Gmbh

Gerd Hoogestraat

Thomas Koch

Peter Steffahn

Olaf Sielemann

Joachim Gruppe

Sebastian Mathes

Sebastian Weny

Rainer Bussar

Wolfgang Rudolf Fischer

Thomas Hopper

Nicolas Henri Bernard Redon

Sebastian Zeh

Klaus Boeller

Gerd Poesch

A water-refill plug for automatically filling and refilling the cells of the battery has a housing forming a valve seat, and forming an upper and lower guides above and below the valve seat. A float is movable vertically in the housing below the seat in one of the cells of the battery. A valve body vertically movable independently of the float body has upper and lower end vertically slidable in the upper and lower guides. A magnetically attractable or repellable element or permanent magnet is provided on one of the bodies. Another permanent magnetic on the other of the bodies exerts a force via the element or magnet so the valve body is moved by the float body.

Battery water-refill plug

Determining a state of charge (SOC) of a rechargeable battery includes using a first process to determine a first value for the SOC of the battery and using a second process to determine a second value for the SOC of the battery and deriving the SOC as a weighted average of the first value for the SOC and the second value for the SOC. During a charging cycle of the battery an input charge of the battery is determined from an input current flowing into the battery and a charging time. During a discharging cycle an output charge of the battery is determined from an output current flowing out of the battery, a discharging time and an actual capacity of the battery is the sum of the input charge over charging cycles minus the sum of the output charge over discharging cycles.

Method for determining a state of charge and remaining operation life of a battery

A process for introducing a hardening sulfuric acid electrolyte into battery cells at a sulfuric acid density of between 1.20 and 1.31, comprises the steps of combining

Process for introducing a hardening sulfuric acid electrolyte into

Growing community of inventors

Bad Lauterberg, Germany

Gerd Hoogestraat