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I love my 2018 accord but facing battery problem. I jumped started and went to the dealer, he said battery condition is 82% so its good, and there was some loose connection which we have tightened. But at every start I need to jumpstart again and again. Any help?
 

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Lunar Silver 2019 Honda Accord Sport 2.0T 10AT
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Check your main ground.
 

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I love my 2018 accord but facing battery problem. I jumped started and went to the dealer, he said battery condition is 82% so its good, and there was some loose connection which we have tightened. But at every start I need to jumpstart again and again. Any help?
If you can leave it at dealership overnight so they can experience what you are (needing to jumpstart it) after car sitting for awhile. Even though your car could be/is 3 years old and out of 100% warranty there is a pro-rated warranty on battery (see attachment). If they need to jump start it IMO that would be proof that your battery needs replacement.
 

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To add to my post above... not knowing situation where you are but during the current Covid Pandemic cars are being driven a lot less then normal. This will effect the longevity of battery when car is not driven as much... extreme heat/cold and not driving car will effect the lifetime of a battery.
 

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My 2018 Accord Hybrid's 12 volt battery flat out "QUIT", just about a month ago... the car was still under the original factory warranty... (only about 2 months left). I haven't driven it much during the pandemic. I called AAA and got them to come by and jump, or tow... what ever it needed. They tested the battery and said it had about 10% or less, but jumping did not help, so they took the car to the dealer. When I got to the dealer they had tested my battery and said it was stone dead... also that it would be about the time that it would be beginning to go bad due to age. I was surprised that it "went" so soon, batteries I had in the past would sort of "slow down" and I knew that I would need to replace it soon. NOT this time... I think that because it's a hybrid the battery does not show it's demise as easily. So the dealer replaced the battery under warranty and I was happy. I am thinking that those of us with HYBRID's should be VERY aware of the "time line" on our 12 volt batteries, and be pro active in replacing them, otherwise we will be stranded someplace and not understand why. Apparently the car does not give us any indication of possible impending 12 volt failure before it happens.
 

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My 2018 Accord Hybrid's 12 volt battery flat out "QUIT", just about a month ago... the car was still under the original factory warranty... (only about 2 months left). I haven't driven it much during the pandemic. I called AAA and got them to come by and jump, or tow... what ever it needed. They tested the battery and said it had about 10% or less, but jumping did not help, so they took the car to the dealer. When I got to the dealer they had tested my battery and said it was stone dead... also that it would be about the time that it would be beginning to go bad due to age. I was surprised that it "went" so soon, batteries I had in the past would sort of "slow down" and I knew that I would need to replace it soon. NOT this time... I think that because it's a hybrid the battery does not show it's demise as easily. So the dealer replaced the battery under warranty and I was happy. I am thinking that those of us with HYBRID's should be VERY aware of the "time line" on our 12 volt batteries, and be pro active in replacing them, otherwise we will be stranded someplace and not understand why. Apparently the car does not give us any indication of possible impending 12 volt failure before it happens.
mine was dead and threw out a bunch of error codes, 1 year old with only 18k miles. jump started by the tow guy and all was well, but decided to have it brought to the dealer for check up. they said battery had a bad cell and replaced it under warranty.
 
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