Ac capacity

[Jamie211983]

Hi i wonder if any of you guys know the refrigerant capacity of a 2012 v50 d3 this is the first car ive done that doesnt have a sticker under the bonnet to tell me,so i recently gassed up mine i do it on the side of my current job and have the equipment i vacuumed the system and used a chart i found on the net but my compressor is cycling on and off every 6 seconds like its low on gas and can't seem to find another chart confirming 500g of gas im a bit stuck.thanks