HELP! Battery/electrical issue - car keeps dying.

SouthArk370Z

A battery in good condition and well-charged should keep the car in sleep mode for a month.
Check:
1) Condition of battery. If it's not a sealed unit, check/replenish electrolyte level. Use only distilled water to top off any low cells. Most auto supply stores can check your battery - often for free.
2) That system is charging properly. Should have about 14-14.5 volts at high idle if it's trying to charge the battery.
3) For too much drain when in sleep mode. Check any non-OEM parts to make sure they either auto-off or are on a switched supply.

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2011 Nismo#91

Sorry about the thread rez from the dead but I am having similar issues. '11 with ~80k miles. I replaced the ground strap and that helped for awhile but it's back to a dead battery after just a few days, lights are on but won't crank. I'm thinking it might just be time to get an alternator. While the miles are relatively low it's 12 years old. When I replaced the ground strap the last time I couldn't pin down any specific high draw areas but I wasn't too through, checked the audio amp circuit and overall draw. The amp circuit didn't draw any load and the overall drain while a bit high wasn't too off from the "normal range 50-80ma" from what I remember.

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