10-08-2021, 10:46 AM
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#46
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Senior Member
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Join Date: May 2010
Location: Northern NV
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Join Date: May 2010
Location: Northern NV
Posts: 1,984
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I agree the Panasonic is a good quality battery.
But if your battery drains from being idle for a month it’s nowhere near rated capacity, assuming the car has normal parasitic draw. It’s a risk depending on how you use your vehicle.
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10-08-2021, 11:34 AM
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#47
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Join Date: Nov 2019
Posts: 1,117
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Senior Member
Join Date: Nov 2019
Posts: 1,117
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My OEM Panasonic in my 2017 recently had to be replaced. Battery was date stamped 2016.
Where I live is tough on batteries. Summer temps over 120°. My 4runner sits idle Wed-Mon every week.
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10-08-2021, 01:08 PM
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#48
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Join Date: Apr 2021
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It is depressing reading this thread and seeing many cases where these batteries last less than 5 years. I’m in the hot humid south and have gotten 10 years out of a Walmart battery. I hope to see the same from my 4Runner.
Most times in other vehicles when I thought I was seeing signs of a battery at the end of its life, there was an underlying issue causing its inability to hold a charge. Recently had an issue where the radio had was draining 1-2 amps steadily when the car was off. (Non-Toyota)
I pulled the radio and amp fuses, it rectified the issue for about 2 weeks, now something else is draining the power, and the behavior is surreal. Whatever is draining the power completely stops / shuts off around 7-8 volts. Because you could charge the battery, leave it for an hour, a day, week, or month, and while it will fail to start, there’s always enough voltage to remotely unlock it, and dimly illuminate the interior lights. This makes me think it’s not a dead short but an electronic module (BCM?) that won’t sleep.
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10-08-2021, 05:09 PM
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#49
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Join Date: Mar 2017
Location: NYC
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my panasonic is 4 years old, but used for maybe 6 months before putting it away for storage, and getting charged up now and them.
just moved it into my standby generator. fingers crossed it gives me a few years hah.
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10-08-2021, 06:31 PM
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#50
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Join Date: Jan 2017
Location: san diego
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panasonic battery is pretty good for what it is. I recently replaced it, mainly because it couldn't handle winch duty very well. Still working when i replaced it after 5 years. Would have kept it, if i didn't have a winch.
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2016 trail 4runner, twin locked on 34's.
Can read more of my build here (2 parts):
https://www.lasfit.com/blogs/news/ho...ad-build-part1
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10-08-2021, 07:01 PM
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#51
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Junior Member
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Join Date: Dec 2017
Location: St. Louis, MO
Posts: 17
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Join Date: Dec 2017
Location: St. Louis, MO
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My stock battery was dead as a door nail in 1.5 years. Live in the Midwest.
No abnormal usage.
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10-10-2021, 10:16 AM
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#52
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Member
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Join Date: Mar 2017
Location: Mo
Posts: 34
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Join Date: Mar 2017
Location: Mo
Posts: 34
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The Panasonic that shipped with my 08 FJ lasted until 2016.
It was still going strong then but I was installing a winch in preparation for a moab trip so I pulled it and installed an odyssey that is still going strong.
Hoping the unit that ships with my inbound 22 ORP is as good.
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10-10-2021, 07:51 PM
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#53
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Join Date: Mar 2021
Location: Canada
Posts: 1,137
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Location: Canada
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Quote:
Originally Posted by 1000MPH
I agree the Panasonic is a good quality battery.
But if your battery drains from being idle for a month it’s nowhere near rated capacity, assuming the car has normal parasitic draw. It’s a risk depending on how you use your vehicle.
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I was a bit surprised as well. the rx battery that died after a month idle was about 11 years old. It must have been the cold winter that did it. I got 11 years and 100,000 miles out of the OEM battery, no complaints
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10-10-2021, 11:42 PM
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#54
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Join Date: Apr 2021
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Can I make a recommendation to everyone - if you have anything that will generate a 12V supply (not just charging) voltage, I’ve used it to bring batteries back that were so low they’d cause the charging set to fault out.
Leave the 12V supply on it for 30 mins to an hour, then switch it back to charging and it will pick right up and safely finish the charge with all the protection circuitry we normally enjoy with modern sets.
This is the same as “hook it to another battery in parallel” but with less amps LOL
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10-11-2021, 12:27 AM
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#55
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Join Date: Jan 2019
Location: AZ
Posts: 1,385
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Quote:
Originally Posted by mrblah
panasonic battery is pretty good for what it is. I recently replaced it, mainly because it couldn't handle winch duty very well. Still working when i replaced it after 5 years. Would have kept it, if i didn't have a winch.
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Well, San Diego
Mine lasted 3 Phoenix summers and died during the 4th.
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10-11-2021, 12:31 AM
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#56
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Senior Member
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Join Date: Jan 2017
Location: san diego
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Join Date: Jan 2017
Location: san diego
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Quote:
Originally Posted by MAST4R
Well, San Diego
Mine lasted 3 Phoenix summers and died during the 4th.
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yup..cant complain about SD.
The women, the weather, the politics, and the battery life..lol.
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2016 trail 4runner, twin locked on 34's.
Can read more of my build here (2 parts):
https://www.lasfit.com/blogs/news/ho...ad-build-part1
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10-11-2021, 09:55 AM
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#57
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Banned
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Join Date: Nov 2017
Location: Bay Area, CA
Posts: 2,247
Real Name: Mark
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Banned
Join Date: Nov 2017
Location: Bay Area, CA
Posts: 2,247
Real Name: Mark
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Quote:
Originally Posted by MAST4R
Well, San Diego
Mine lasted 3 Phoenix summers and died during the 4th.
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Three years of battery life is about average in hot climates, one reason is that the water evaporates faster than in more moderate climates. Maybe topping off the water level more frequently would help extend the lifetime.
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