Battery leaks out

[Haya Khan]

1. Toyota Corola 2001 battery (40 amps) leaks out if the car is not re-started with-in 6 to 8 hours of time. The Battery is checked, OK.
2. Once, used a 60 amps battery (disconnecting the orignal battery) to start the car, the alternator fuse (100 amps) and Radio ignition supply fuses blew off.
3. Fuses replaced and OK now, but the battery still leaks out during 6-8 hours OFF state.

[johnholl]

Remove all fuses one at a time untill current draw goes away. Try removing the alternator or starter wires

[Haya Khan]

Originally Posted by johnholl

Remove all fuses one at a time untill current draw goes away. Try removing the alternator or starter wires

Sir, As I have no time to carry out thorough wiring check, I am doing the same what you have suggested. I remove the alternator & starter wire when parking the car for more than 3 to 4 hours and by doing so, have no problem while starting the other day.
2. I think, I have mentioned before that once I connected a battery of 70 amps to start my car and the alternator fuse (100 amps) blew off, the moment both the +ve & -ve leads were connected to the battery. Let me be clear to you that I am an electronics technician having more than 25 years experience in electronics, communication and general purpose electrical appliances but having NO experience in auto electrical system.
Best regards

[Diblue]

my suggestion is to find a local parts store, that does free alternator/battery testing, and have them tested (they generally do both tests at once) and that will help tell you what's wrong if it's the battery connection, or the alternator or diodes.