CRV 2019 battery dead

Asked by GuruH77H6 Aug 11, 2019 at 06:13 PM about the 2019 Honda CR-V EX FWD

Question type: Maintenance & Repair

2019 CRV Honda battery goes dead
after sitting in garage for two days
this the third time, I am and auto and
diesel mechanic I know what’s wrong
as I hook up the battery charger I
hear a switch click sound like the
starter  solenoid click that can cause
a  battery to go dead if has a short
their mechanics don’t be lazy and fix
these cars I will be talking to Honda
soon I am not to happy with this
problem on my CRV

3 Answers

30

Service Bulletin 19-039 was issued on 3/29/19 for emission software update to avoid battery drain when system does not go back into sleep mode after running check of system. This was for 2019 CR-V EX,EX l and Touring.

3 people found this helpful.
70

I am a failure analysis engineer for a major heavy equipment manufacturer. The regular battery for the 2016 Honda CRV is the long, skinny** 51R. It has 410 cold cranking amps and costs $160+, Dealer-installed. It is specially designed to be as light as possible to help Honda meet EPA fleet fuel economy standards, which is why it is expensive. The Honda dealer cannot isolate the starting problem in a "dead battery" CRV because the battery temperature and charge state has changed since you tried to start it. The dealer may say that though the battery tests good, a light load would kill it in less than half an hour. **The battery is long and skinny, meaning: --the the plates are long and very close together. --long plates are not very rigid, compared to the older, bigger batteries. Plates warp as they age, and warping too much lets them touch, which shorts the battery internally. This is a battery design problem, not a Honda CRV problem. I'd say the 51R battery design allows the plates to touch when the temperature, accessory load charge drain and possibly other conditions are met and thus, the CRV will not start. Because the plates are long and flexible, a temperature change and charging restores the battery. The shop tech says the battery is good because it is good at the moment he tests it, and you get the service bill. The 35R battery installed in Canadian CRVs may be the answer, because it is of heavier, standard design with short, rigid plates. Canada gets the heavy battery because they have colder winters and no EPA fleet standards to meet. The Canadian-spec CR-V battery is much wider, has 650 cranking amps (240 more!) and fits in the same place under the hood as its weaker 51R counterpart. My local "big box" store has the 35R for $73 in a 2-year battery and $103 for the more powerful 5-year version, DYI installed. Switch to the 35R battery and get all the benefits and at half the cost of the expensive, trouble-prone 51R.

7 people found this helpful.

Thx. Our 2018 crv touring has dead bat syndrome approaching 3 yrs - age - I will get a 35r

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