Raj S.
Battery replacement, but they messed up alternator
I got my car battery replaced using instant car fix service yesterday. But today I saw the red battery sign on my dash. I took it to a shop close by, the mechanic said, oops whoever changed the battery is a novice and they messed up the alternator !!!! My car halted again :( 😞..... I can't drive if the alternator is not working... 😢 I reported this to them. If they can help me get it fixed, then I will consider giving higher rating here. Will see !!!!
Response from Instant Car FixMar 15, 2026
Hi - we’re sorry to hear about the trouble you’re experiencing. That said, we’d like to clarify something important. A battery replacement cannot “mess up” or damage an alternator. The alternator and battery are separate components in the vehicle’s charging system. The battery simply starts the car, while the alternator generates electricity and recharges the battery when the engine is running. If an alternator is failing, it’s typically due to wear, age, or an existing charging-system issue, not because a battery was replaced. In fact, a failing alternator is a common reason a battery warning light appears or a new battery quickly loses charge. That said, we’re still happy to help. If the alternator does need replacement, we can provide you with an estimate and assist with getting it fixed. We just ask that customers verify the information before posting negative reviews about a company, as situations like this are often related to underlying vehicle issues rather than the battery installation itself. Please reach out to our support team and we’ll be glad to help with the next steps.


