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Battery charger

Dealer installed "option"....JM2C...I could be wrong :tongue:
 
I installed it myself. Very easy to do, and takes about 30 min. The plug comes with the charger when you buy it. I purchased mine online from an acura dealer in New York that advertised it on google about $80 or $100 off list Instructions were in the box too
 
I was told by the Acura specialist that the NSX must be driven (or engine idle) a minimum of 30 minutes every 90 days or the lithium battery may discharge completely, requiring a flatbed tow to the dealer to address. So I am reluctant to put a battery tender on it like every other car I own...I plan to drive it at least once per month to keep the battery charged.
 
There's nothing wrong with a battery tender on the 12V system. It's well known that hybrid cars that sit for too long will start to get problems with the expensive hybrid battery pack. So make sure you drive it frequently enough. 30 minutes every 90 days is much too rare. Every month is better.
 
NsXMas said:
I was told by the Acura specialist that the NSX must be driven (or engine idle) a minimum of 30 minutes every 90 days or the lithium battery may discharge completely, requiring a flatbed tow to the dealer to address. So I am reluctant to put a battery tender on it like every other car I own...I plan to drive it at least once per month to keep the battery charged.
Click to expand...
The battery tender does not charge the hybrid battery, just the 12V one. You need to drive it more than once a month to keep the 12V battery charged, so a battery tender is pretty much a requirement unless you DD it.
 
I start the engine biweekly for 15 minutes. 5 minutes in sports mode, 10 minutes in sport+ (after the car goes EV). This allows the engine to warm up and all liquids to circulate. To do this I move the car out of the garage (at least the back of the car). This also keeps the tires moving (always another position). Did this in the past with all my cars, never had a problem.


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NsXMas said:
I was told by the Acura specialist that the NSX must be driven (or engine idle) a minimum of 30 minutes every 90 days or the lithium battery may discharge completely, requiring a flatbed tow to the dealer to address. .
Click to expand...

Wow! That is really annoying for up here in the frigid North it maybe 4-5 months before the temps are even close to reasonable to fire up the car. I keep my other cars buttoned down for winter and then restart them in spring without issues. I've done that for many years. The concept of calling a specialist to service a dead battery is just silly. It negates the argument of the car's ease of serviceability.

It seems the more I learn about the second gen NSX, the less appealing it becomes. The ridiculous oil change drain plug count and now this. I will be curious to see how the few that own one in the Northern climates fare with this car after a few years. Somehow I don't think their comments will be all that positive.
 
nsx_2k said:
Wow! That is really annoying for up here in the frigid North it maybe 4-5 months before the temps are even close to reasonable to fire up the car. I keep my other cars buttoned down for winter and then restart them in spring without issues. I've done that for many years. The concept of calling a specialist to service a dead battery is just silly. It negates the argument of the car's ease of serviceability.
It seems the more I learn about the second gen NSX, the less appealing it becomes. The ridiculous oil change drain plug count and now this. I will be curious to see how the few that own one in the Northern climates fare with this car after a few years. Somehow I don't think their comments will be all that positive.
Click to expand...

Don't be silly.
Who in the North doesn't start a stored car at least once every three months?
That's like once in the middle of each winter.
That's all Honda is asking owners to do to keep the EV battery with enough charge to start the car after 6 months of storage.
The next generation of hybrid high performance cars ( Porsche, Ferrari, Honda etc. ) will all be this way.

What is ridiculous about the drain plug count?
This is a dry-sump Cosworth engine and dry-sump engines are more complex to service than wet-sump.

All of us in the North who are owners have nothing but praise for the new NSX.
It's only non-owners like yourself who find these minor kinds of things to complain about.
 
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Olyar15 said:
The battery tender does not charge the hybrid battery, just the 12V one. You need to drive it more than once a month to keep the 12V battery charged, so a battery tender is pretty much a requirement unless you DD it.
Click to expand...

This is correct. The charger does not charge the hybrid batteries.
 
For what it is worth. I purchased a NSX Battery tender from a previous owner. I had to also purchase the connector that goes inside the car and allows the attachment of the tender just under the glove box. Because I park right next to the wall on the right hand side, I have to lower the window to feed the tender cable in and then up the window. Kind of a pain in the ass. So recently I purchased from amazon the connector made by CTEK called the [FONT=&quot]CTEK (56-531) Comfort Indicator Panel, 10.8' It connects directly to the battery and is long enough to allow it to be fished to the inside of the front bumper. Now I can easily connect to the car as well as disconnect. The end piece has a battery monitor that tells you if it is charged or not. I used double back tape to attach. Thus far works really well. Had I known I would have purchased the CTEK model 5? and the connector combo for about $90.[/FONT]
 
I use a "Battery Tender" that I used on my other cars. Big deal, I pop the hood and plug into the "break away" connector that clips to the battery posts.

I use the passenger socket to power the Black-Vue, which reminds me I should hardwire it into the overhead one of these days.
 
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I am keeping my car covered to keep it dust free between outings and having the connector at the front of the lower grill makes it really easy. Also the device shows when the voltage has dropped requiring charging (if I do not plan on driving that day). Trivial but this kind of stuff keeps me going.... The other thing I wonder about is that the OEM and CTEK equivalent have special charging schedules for mat type batteries. Probably does not make a difference for lead based batteries.
 
Nice video. I have the OEM Acura charger which is a rebranded CTEK unit shown in the video. I purchased the OEM connector for inside the car. However, it is kind of a pain to use. So I purchased a connector that hooks up directly to the battery like in the video. What is different is that my connector is 10 feet long so that I was able to connect directly to the battery and have the end piece fit through to the front of the car. So now I don't even have to open the hood. I can directly connect at the inlet for the radiator. Thanks for posting.
 
I just stared mine after sitting for 4+ months
It did have the NSX (CTEK) battery maintainer plugged in the entire time. Temps as low a -9C in an unheated garage
High voltage battery never dropped a bit i
174fc6ebd6f80a289cc826bc0c256530.jpg

n 4 months. Acura is being very conservative.


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did the exact same thing as Warrenw - here in Ottawa - car is stored in my unheated garage, same combo cold since November - started no fuss (was on the factory battery maintainer) and the LiON battery was full charge, I let it run for 15 mins on Sport Plus.. cant hardly wait another 6 weeks to hopefully get Mariko out the beginning of April :)

KK34 aka Lucky
 
I am planning to install CTEK similar to Pat (video above). Rather than closing the front hood, I was leaning towards leaving the hood ajar to allow power cord to not be crunched up against the seal. Is it OK to leave the hood ajar?

I was also thinking about routing the power cord through the front window as there seems to be a fairly large opening between the cowl and windshield (by the wipers).

Thanks
 
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I just garaged mine for the winter. Does it have to be "driven" every 3 months or can I just start it and let it "idle" in Sport + mode for 15-30 min.?
 

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