Just wanna share this experience. So we decided to drive up to kl last june for a few meetings. Somehow, my friends car battery died and couldn't start after dinner. Our Malaysian staff helped us arrange for a new battery to be delivered and install at the restaurants carpark. Took them less than an hour to arrive and install the new battery. It only costs 800rm+ iirc. He is driving a s300 and he said he paid >500$ to replace his battery in sg. Can't recall the brand of the battery but I'm quit sure it wasn't amron. It was some European brand.
The guy gave me friend the warranty card and asked him to download the app. Cos they also provide the same service in johor.