I have a GLC 300 4matic 2016 model. Early last year, my auto start/stop function wasn't working and I was told to replace the main battery. OEM Battery in India costs upwards of Rs 30k. While an Amaron Battery of 80AH costs less than 10k.
I decided to replace the oem one with Amaron and my life became a nightmare. Within 6 months, my battery was dead. The Manufacturer told me there's nothing wrong with the battery, you need to get your car checked. The merc service centre told that your battery being non genuine, we cannot pinpoint the exact cause, but when we replace with a genuine oem battery there's no issue. Effectively, I'm stuck between rock and a hard place.
Have any one of you, especially in India experienced this while changing the battery? I'm unable to figure out what could be so special in a OEM battery which is not provided by the Amaron or exides of the world. The new Amaron battery is still in warranty but the manufacturer is unwilling to change as they claim there's nothing wrong with it. Do I have no other option but to go back to OEM brand battery?