Method and a device for charging a battery

A method according to any of the preceding claims, characterized in that a direct voltage is converted into an alternating voltage in an inverter (2) for feeding to the input of said rectifier (5).

A device for charging a battery (7) comprising an alternating current source (1, 2), a rectifier (5) being connected with its input to the alternating current source and being connected with its output (6) to the battery for charging thereof, the alternating current source being adapted to feed at least one consumer (4) other than the battery with electric energy, a member (8) for measuring the charging current from the rectifier to the battery, a means (13) for comparing the measured charging current with a current limit value and an arrangement (11) adapted to control the voltage on the output of the rectifier based on information about said comparison and decrease it if the measured current exceeds the current limit value for reduction of the charging current, characterized in that it comprises a unit (23, 28, 30) adapted to form said current limit value by comparing a current value formed by the value of said measured charging current with a restriction on its positive rise speed with a predetermined maximum current limit value, and to determine the lowest of the so obtained current value and said maximum current limit value as said current limit value for the comparison of said means.