The invention relates to a feed-through, in particular a battery feed-through, preferably for a lithium ion battery, more preferably a lithium ion rechargeable battery, having at least one main body which has at least one opening through which at least one conductor, in particular a substantially pin-like conductor, in an electrically insulating material comprising or consisting of a sealing glass is fed, wherein the main body comprises or consists of a light metal and/or a light metal alloy preferably selected from the group consisting of aluminium, magnesium, titanium, an aluminium alloy, a magnesium alloy, a titanium alloy and AlSiC, with an integral bond being formed between the light metal and/or the conductor and the sealing glass, wherein the sealing glass comprises or consists of a titanate glass and has only a small phosphate proportion.