Recently I bought a Mazda 626 1994 2.5L car with 145,000 mileage. The battery is continuously dying. So I checked all the fuses for any short circuits but couldn’t find any. I replaced the battery twice but still the problem is there. When the battery is fully discharged I got a jump start but it seems that the battery is not charging even after 30 minutes of drive and once car was stuck on the road. So I have to charge the battery using a charger and keep the negative terminal disconnected when not running. Could you please help me with this?