Battery advice - Leaving the Stinger sitting for two months

This is the one thing that's going to irk me about this car. My 2000 sebring jxi I had for 9 years and never once had to change the battery. The 2009 Scion xB I had to change the battery once in its 12-13 years I had the car. I have a sneaky feeling I'll be changing the battery more often in this, especially since I don't have any easy way to attach a tender.
Modern vehicles do tend to kill batteries faster due to more parasitic draw from all the components even when the car is off, however, i think what kills them faster is the style/type of driving the car gets, short trips kill them especially agm batteries as it doesn't give it a chance to charge level off over a longer drive after the battery is used for starting the car. Definitely saw this play out on our bmws, when we had once or twice a week hour+ long drives for over 6 years, never had a battery issue, changed jobs and moved to a place that was a 1 mile commute, drove daily but went through 2 batteries over 3 years in the same car.
 
^^So the consensus is to put the battery on the tender periodically (for a day or two)? Every few weeks or so if car is not driven for longer periods of time often?
 
^^So the consensus is to put the battery on the tender periodically (for a day or two)? Every few weeks or so if car is not driven for longer periods of time often?
If many, repeated, consecutive short trips are the norm, with no drive cycles over 20 minutes, then I suppose yes/maybe. (but I am not fully convinced it is required)

There are zero references to this situation in the owners manual. It would and should be the exception, and not the norm, to need to connect a battery charger.
Side note - service manual specifies that the max parasitic draw is to be less than 50mA

I attached a file for anyone interested in this charging system


1654637179152.webp
 

Attachments

______________________________
I measured the voltage across the post on the battery last evening. Car had been at rest from my 30 minute commute for at least 2 hours so all electronics were settled.
Voltage measured 12.41

I connected the NOCO charger under the hood around 8 pm and left it over night. This morning I unplugged the charger, which had auto shut off sometime during the night (suspect around 2 am?). Measured the voltage across the battery post again.
Voltage measured 12.61

It did take a little charge, but definitely in the noise.

I would agree as a normal course of operation it is not necessary to tend the battery. I'll probably continue to put mine on a charger once a month. If the battery only last 3 years, then I'll consider this a failed experiment and will stop charging it routinely. :)
 
To further saturate this post with "data / observations" - and since I apparently have too much free time..
On my 2018 stinger (4 years old) - 92,392 kms- original AGM battery - in what I believe to be excellent condition.

After sitting at my work for ~9 hours, with no external accessories powered on (Dashcam not connected etc) - I decided to log the voltage (coolant temp shown only to show this was from a cold start). Car was parked & at idle RPM during the entire short log.
After just 26 seconds at ~14.4v, The BMS/AMS decided to reduce the voltage to under 13v (Battery management system / Alternator management system)


NOTE:
I don't have the no load battery voltage - as the logging setup I have only works with IGN on - so the beginning voltage of ~12.3 is measured with ignition ON

1654699335240.webp





Exact same data as above - only voltage, higher resolution on the actual voltage. (shows 10.9v while cranking)

1654700902749.webp
 
From interior to exterior to high performance - everything you need for your Stinger awaits you...
Lets hope anything plugged into the car can operate between 12-15VDC with transients like that.
 
I’ve left my car for 5 and 6 weeks respectively this year. I used this trickle charger and it worked as it’s supposed to. Car started right up each time. I attached directly to the battery terminals in the trunk and placed it on top of the rear trunk cover inside the car. Because I used the battery terminals I had to remove the jack kit. I’d recommend this. Simple easy to use.
 

Attachments

  • IMG_0028.webp
    IMG_0028.webp
    111.8 KB · Views: 8
I’ve left my car for 5 and 6 weeks respectively this year. I used this trickle charger and it worked as it’s supposed to. Car started right up each time. I attached directly to the battery terminals in the trunk and placed it on top of the rear trunk cover inside the car. Because I used the battery terminals I had to remove the jack kit. I’d recommend this. Simple easy to use.
You can charge it via the positive and ground terminals in the engine bay. I do this regularly. It's much more accessible this way.

Takes about 3.5 hours to fully charge each time.
 
You can charge it via the positive and ground terminals in the engine bay. I do this regularly. It's much more accessible this way.

Takes about 3.5 hours to fully charge each time.
I would do that, however, I have the BMS cover plate installed. the JB4 is velcro'd to the fuse box and the cover plate is over that. SO I had to go directly tot he battery instead. Besides. this keeps the Solar panel and wiring inside the car.
 
______________________________
From interior to exterior to high performance - everything you need for your Stinger awaits you...
I have the NOCO Genius 10. Even after driving mine for any distance, the battery will always take a little charge to bring to 100%.

You don't have to take the battery out. Use the jump start connections shown in the manual to charge under the hood. In the manual it's on pg. 6-6 (for the MY22).
Did this charge a completely dead battery? I had my car in the shop and they let my battery die on me. Rather than buy a new battery....I wanted to see if there was another solution for this ....also can you send a link for the NOCO so I can ensure I'm purchasing the correct one?
 
Did this charge a completely dead battery? I had my car in the shop and they let my battery die on me. Rather than buy a new battery....I wanted to see if there was another solution for this ....also can you send a link for the NOCO so I can ensure I'm purchasing the correct one?
This is the NOCO GENIUS10
This is the NOCO GENIUS5
This is the NOCO GENIUS2
This is the NOCO GENIUS1

And there is a more permanent direct mount NOCO GENIUS2D & many more!

If you are charging overnight, there is no need for 10 amps unless time is a constraint.
 
Last edited:
You don't need to do anything.

Cars sit around longer in holding yards and dealerships. New cars and Old cars.

The self discharge rate on lead acid batteries will see a battery not needing a recharge for 3 months or more.

It will cause no damage whatsoever. Just drive it when you get home.

"New batteries" are supposed to be recharged every three months if in storage but many manufacturers don't bother.

Trickle Chargers.

It's a pretty agricultural lead acid battery in fact if it is absorbed glass fibre mat (AGM), it is a valve regulated recombination battery which means if it overcharges it gives out a puff of hydrogen instead of "expanding" the battery wall.

So there is another good reason never to leave a battery on charge unattended unless you own a base station with externally monitored high and low volts and current charging alarms to protect overcharging, failed cells and thermal runaway.
 
You don't need to do anything.

Cars sit around longer in holding yards and dealerships. New cars and Old cars.

The self discharge rate on lead acid batteries will see a battery not needing a recharge for 3 months or more.

It will cause no damage whatsoever. Just drive it when you get home.

"New batteries" are supposed to be recharged every three months if in storage but many manufacturers don't bother.

Trickle Chargers.

It's a pretty agricultural lead acid battery in fact if it is absorbed glass fibre mat (AGM), it is a valve regulated recombination battery which means if it overcharges it gives out a puff of hydrogen instead of "expanding" the battery wall.

So there is another good reason never to leave a battery on charge unattended unless you own a base station with externally monitored high and low volts and current charging alarms to protect overcharging, failed cells and thermal runaway.
So why are they telling me it can't take a jump and I may need a replacement....it's for a 21 stinger and never had battery issues at all .....so is it time for a replacement? Just had the car serviced also and everything was healthy .....I'm debating if I need to buy the Norco or go ahead and just replace it
 
So why are they telling me it can't take a jump and I may need a replacement
Who is they in this case?

Is it a battery salesman telling you that you need a battery?
 
From interior to exterior to high performance - everything you need for your Stinger awaits you...
So why are they telling me it can't take a jump and I may need a replacement....it's for a 21 stinger and never had battery issues at all .....so is it time for a replacement? Just had the car serviced also and everything was healthy .....I'm debating if I need to buy the Norco or go ahead and just replace it
My reply is to the original poster.

He does not need to do anything on a battery that sits two months dormant.

Just start and drive away.

Your case I do not know.

If you have a 21 Stinger your battery is 4 years old. (Near)

Batteries have thin lead plates. They last about 4 years. Any longer is a bonus.

They are thin because they need to get the current off faster. A High current to turn a starter motor for a short period of time. The current comes off the surface of the plates. If you want a slow long discharge, for a solar battery, or a wheel chair, you use thicker plates that discharge over a longer period that depletes the entire plate.

Thin plates corrode faster. They corrode as you recharge them. It's a no win situation. You don't charge them they have no charge. If you charge them they corrode.

Eventually a lead plate corrodes through and it is called "sudden death" It usually happens on the last start. The plate breaks during start. You drive to work. When you come to start again. The plate already failed on the previous start. Sudden death. You are copulated.
 
______________________________
Who is they in this case?

Is it a battery salesman telling you that you need a battery?
It's in the shop for a transmission and the battery ended up dying......they tried jumping it to no avail
 
It's in the shop for a transmission and the battery ended up dying......they tried jumping it to no avail
I hope they sold you a good battery at a good price
 
From interior to exterior to high performance - everything you need for your Stinger awaits you...
Back
Top