$45.00 - 150.00 try and put a gel battery in it.A modern gel battery (also known as a "gel cell") is a VRLA battery with a gelified electrolyte; the sulfuric acid is mixed with fumed silica, which makes the resulting mass gel-like and immobile. Unlike a flooded wet-cell lead-acid battery, these batteries do not need to be kept upright.
You also will need to have the new battery programmed to the car to operate effectively and no error lights. So find an independent BMW shop, local mechanic or dealer to do so. Figure closer to $150 when your all said and done.
If you don’t have a battery programming tool, is to take it to the dealer for the replacement. From various posts, the cost averages about $500, which is $250 for the OEM BMW battery and $250 for the installation and programming. Some say the programming alone can be as low as $100 if you do the rest yourself, but dealers seldom let you leave with a bill of only $100. Same as a Fait / Chrylser PCM CAN-BUS controlled regulator.. "idrive" did Steve Jobs invent this too?
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