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My car seems to be have battery issues upon starting of the car. I had to jumpstart the car twice in the past week. I only purchased a battery 2 1/2 years ago. What is common to expectancy of life for these batteries. The battery is a Mercedes battery. The little viewing window where it says if the batteries good or bad seems to show that the battery is still good. I attached a picture. Is this common for the battery good to go out but the sensor to say that the battery still good?
In my experience ,battery life varies depending on climate conditions , the amount of use & quality of charging.
I would have a multi meter check whether your alternator is charging . Should be about 14 volts when a little over idle. A battery load check should also be done by a local auto electrician of battery outlet.
Check for any corrosion & tightness of terminals. I put a light smear of vaseline on the terminals to prevent corrosion.
Lastly ,if all is well , the starter motor needs to be checked.
I will check out the volt meter and see what it shows. I think it's just a bad battery but it seems like it hasn't been in the car long enough.
I think my alternator and starter are fine. As soon as I plug up the battery pack to the battery the car turns on without issue. That and when I'm driving the alternator is charging up the battery. I can turn the car off and come back a little bit later and it will turn on without issue.
Just a thought ,our cars require a Absorbed Glass Mat (AGM) battery to take the heavy loads imposed . Yours having a fluid level indicates it is a flooded battery.
I would take it back to the dealer & ask why this battery was sold to you. Maybe a deal can be made on a replacement.
The original battery lasted about four years. I bought the new battery from MB dealer, the same type. It is my weekend car, has 36K miles over six years.
The info below is taken from :-https://www.batterystuff.com/kb/articles/battery-articles/battery-basics.html
4. CCA, CA, AH and RC. What are these all about? These are the standards that most battery companies use to rate the output and capacity of a battery.
Cold cranking amps (CCA) is a measurement of the number of amps a battery can deliver at 0 ° F for 30 seconds and not drop below 7.2 volts. So a high CCA battery rating is especially important in starting battery applications, and in cold weather.This measurement is not particularly important in Deep cycle batteries, though it is the most commonly 'known' battery measurement.
CA is cranking amps measured at 32 degrees F. This rating is also called marine cranking amps (MCA). Hot cranking amps (HCA) is seldom used any longer but is measured at 80 ° F.
Reserve Capacity (RC) is a very important rating. This is the number of minutes a fully charged battery at 80 ° F will discharge 25 amps until the battery drops below 10.5 volts.
An amp hour (AH) is a rating usually found on deep cycle batteries. The standard rating is an Amp rating taken for 20 Hours. What this means, say for a 100 AH rated battery is this: Draw from the battery for 20 hours and it will provide a total of 100 amp-hours. That translates to about 5 amps an hour. 5 x 20 = 100. However, it's very important to know that the total time of discharge and load applied is not a linear relationship. As your load increases, your realized capacity decreases. This means if you discharged that same 100 AH battery by a 100 amp load, it will not give you one hour of runtime. On the contrary, the perceived capacity of the battery will be that of 64 Amp Hours.
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
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