A method for selecting candidate energy storage cells for balancing of an electrical energy storage pack comprising a plurality of energy storage cells for an electric vehicle, said method including the steps of: a) estimating a state of charge for each of said energy storage cells; b) selecting a group of energy storage cells from said plurality of energy storage cells; c) estimating a future state of charge for each of said energy storage cells in the selected group, said future state of charge resulting from a balancing action of the respective energy storage cell; d) calculating a statistical inaccuracy for each of the estimated future state of charge; e) determining a lower threshold present state of charge among the plurality of energy storage cells, or determining (S210') a higher threshold present state of charge among the plurality of energy storage cells; f) calculating a probability that the balancing action on the selected group of energy storage cells results in that at least one of the future state of charge is lower than said lower threshold present state of charge, the probability thereby being indicative of superfluous leakage, said probability being based on said future state of charge for each of said energy storage cells and on said statistical inaccuracy by including the statistical inaccuracy to the future state of charge for each of said energy storage cells in order to be compared with the lower threshold, or calculating (S212') a probability that the balancing action on the selected group of energy storage cells results in that at least one of the future state of charge is higher than said higher threshold present state of charge, the probability thereby being indicative of overcharging for at least one energy storage cell, said probability being based on said future state of charge for each of said energy storage cells and on said statistical inaccuracy by including the statistical inaccuracy to the future state of charge for each of said energy storage cells in order to be compared with the higher threshold, wherein g) if said probability is indicative of that superfluous leakage or overcharging is unlikely to occur, selecting (S214, S214') said group of energy storage cells as candidates for a balancing action, and h) repeating steps b) to g) for a further group of energy storage cells, wherein said steps b) to e) are repeated for a plurality of further groups. a) estimating a state of charge for each of said energy storage cells; b) selecting a group of energy storage cells from said plurality of energy storage cells; c) estimating a future state of charge for each of said energy storage cells in the selected group, said future state of charge resulting from a balancing action of the respective energy storage cell; d) calculating a statistical inaccuracy for each of the estimated future state of charge; e) determining a lower threshold present state of charge among the plurality of energy storage cells, or determining (S210') a higher threshold present state of charge among the plurality of energy storage cells; f) calculating a probability that the balancing action on the selected group of energy storage cells results in that at least one of the future state of charge is lower than said lower threshold present state of charge, the probability thereby being indicative of superfluous leakage, said probability being based on said future state of charge for each of said energy storage cells and on said statistical inaccuracy by including the statistical inaccuracy to the future state of charge for each of said energy storage cells in order to be compared with the lower threshold, or calculating (S212') a probability that the balancing action on the selected group of energy storage cells results in that at least one of the future state of charge is higher than said higher threshold present state of charge, the probability thereby being indicative of overcharging for at least one energy storage cell, said probability being based on said future state of charge for each of said energy storage cells and on said statistical inaccuracy by including the statistical inaccuracy to the future state of charge for each of said energy storage cells in order to be compared with the higher threshold, wherein g) if said probability is indicative of that superfluous leakage or overcharging is unlikely to occur, selecting (S214, S214') said group of energy storage cells as candidates for a balancing action, and h) repeating steps b) to g) for a further group of energy storage cells, wherein said steps b) to e) are repeated for a plurality of further groups.