Turning off engine
#4
Be aware the OEM battery, at 550 Cold Cranking Amps, will support only brief use of the radio, lights, etc without the motor running. Many here have found that out the hard way, when their car would not start.
If you plan on using the radio or lights with the engine off, step up to a stronger battery. I would recommend nothing less than 640 CCA, and suggest 700 CCA. Nissan has a 700 battery for $114 ($128 minus $14 trade in on the old battery), but you can find a better price than that by looking arund.
If you plan on using the radio or lights with the engine off, step up to a stronger battery. I would recommend nothing less than 640 CCA, and suggest 700 CCA. Nissan has a 700 battery for $114 ($128 minus $14 trade in on the old battery), but you can find a better price than that by looking arund.
#5
#6
I was fishing an overnighter and used my iphone all night. I did not use the speakers of the car, but the car was on ACC so to charge my iphone. I started the car only once for 20 mins around 3:00 am. Then fell asleep at some point. When I woke up around 9 the battery was still fine, the car turned with power and started right away.
I think the battery is enough for charging an iphone all night..
I think the battery is enough for charging an iphone all night..
#7
#8
I was fishing an overnighter and used my iphone all night. I did not use the speakers of the car, but the car was on ACC so to charge my iphone. I started the car only once for 20 mins around 3:00 am. Then fell asleep at some point. When I woke up around 9 the battery was still fine, the car turned with power and started right away.
I think the battery is enough for charging an iphone all night..
I think the battery is enough for charging an iphone all night..
#9
It's not the CCA (Cold Cranking Amps) that matters when it comes to battery drain for charging accessories. What matters is the amp-hour (AH) capacity of the battery.
"(CCA) is the maximum amperes that can be continuously removed from a battery for 30 seconds at 0°F before its voltage drops to unusable levels. A 550 CCA battery can supply 550 amperes for 30 seconds at 0°F. This rating is only useful in the selection of engine starting batteries."
For example the Interstate Mega-Tron II MT-35 Automotive Battery 550 CCA, provides 550 cold cranking amps for starting but is rated at 60 amp-hours. It will provide 1 amp for 60 hours at 12 volts. So charging overnight at a typical Iphone charging current of 1 amp (which it will only draw for about 3 hours tops) uses up only 3 amp hours. If the battery is in good shape and fully charged from the car's electrical system, charging a phone overnight will have negligible effect on the battery's ability to start the car the next day.
"(CCA) is the maximum amperes that can be continuously removed from a battery for 30 seconds at 0°F before its voltage drops to unusable levels. A 550 CCA battery can supply 550 amperes for 30 seconds at 0°F. This rating is only useful in the selection of engine starting batteries."
For example the Interstate Mega-Tron II MT-35 Automotive Battery 550 CCA, provides 550 cold cranking amps for starting but is rated at 60 amp-hours. It will provide 1 amp for 60 hours at 12 volts. So charging overnight at a typical Iphone charging current of 1 amp (which it will only draw for about 3 hours tops) uses up only 3 amp hours. If the battery is in good shape and fully charged from the car's electrical system, charging a phone overnight will have negligible effect on the battery's ability to start the car the next day.
Last edited by gregjhonda; 10-16-2014 at 05:35 PM.
#10
It's not the CCA (Cold Cranking Amps) that matters when it comes to battery drain for charging accessories. What matters is the amp-hour (AH) capacity of the battery.
"(CCA) is the maximum amperes that can be continuously removed from a battery for 30 seconds at 0°F before its voltage drops to unusable levels. A 550 CCA battery can supply 550 amperes for 30 seconds at 0°F. This rating is only useful in the selection of engine starting batteries."
For example the Interstate Mega-Tron II MT-35 Automotive Battery 550 CCA, provides 550 cold cranking amps for starting but is rated at 60 amp-hours. It will provide 1 amp for 60 hours at 12 volts. So charging overnight at a typical Iphone charging current of 1 amp (which it will only draw for about 3 hours tops) uses up only 3 amp hours. If the battery is in good shape and fully charged from the car's electrical system, charging a phone overnight will have negligible effect on the battery's ability to star the car the next day.
"(CCA) is the maximum amperes that can be continuously removed from a battery for 30 seconds at 0°F before its voltage drops to unusable levels. A 550 CCA battery can supply 550 amperes for 30 seconds at 0°F. This rating is only useful in the selection of engine starting batteries."
For example the Interstate Mega-Tron II MT-35 Automotive Battery 550 CCA, provides 550 cold cranking amps for starting but is rated at 60 amp-hours. It will provide 1 amp for 60 hours at 12 volts. So charging overnight at a typical Iphone charging current of 1 amp (which it will only draw for about 3 hours tops) uses up only 3 amp hours. If the battery is in good shape and fully charged from the car's electrical system, charging a phone overnight will have negligible effect on the battery's ability to star the car the next day.
#12
Reserve capacity would seems to be more important for running high power devices like car stereos and amps with the engine off than for low power items like cell phones. http://www.dcbattery.com/faq.html
#13
Reserve capacity would seems to be more important for running high power devices like car stereos and amps with the engine off than for low power items like cell phones. http://www.dcbattery.com/faq.html
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