Normally, if you install an alternator with the low-voltage battery, the alternator will overheat and eventually fail. On a starter motor if the battery has low voltage, the solenoid will burn. We understand that it`s hard to know how the electrical system works.
That is why we recommend you follow the instructions. Always Charge or check the battery before installation; the battery is the heart of your car. Please check the acid of the battery at least twice a year. Thank you very much, Ace Alternators. May cause cancer and reproductive harm.