My mechanic said, that an alternator on my Mercedes B200 (W245, diesel, 2008, 1993 cc) needs to be replaced (because of red battery sign, that is shown and beeps from time to time). My original alternator reference number is A6401540502. I've bought Valeo 439552 because of a good price and apparently it should match my car.
However, my mechanic said, that although it fits in other respects, the new alternator doesn't have voltage regulation and always output 14V. Hence he cannot install it on my car, because the battery can explode.
So my questions:
- Can battery actually explode if charging constantly at 14V? (Or shorten the lifecycle?)
- Maybe an additional voltage regulator is needed? Or I can install the new alternator without regulator?