[Dovidan]

I did an online search for CMF45L-DIN to determine availability & cost just as an DIY FYI. Came up with nothing! Where does one get these aside from the Stealership?

 

[atc98092]

I checked the usual auto parts sources, both locally and on-line. I don't see anyone carrying a replacement battery for the Niro. I think you're stuck with the dealer for a replacement.

 

[Johnxyz]

I did an online search for CMF45L-DIN to determine availability & cost just as an DIY FYI. Came up with nothing! Where does one get these aside from the Stealership?

Out of curiosity I called our local KIA Dealer Parts Department today and inquired about the 12v battery for our 2019 PHEV NIRO. They have always been helpful to me, I buy my oil filters and air filters from them when I need parts. They are friendly and courteous and don't seem to mind questions and helping out people.

The KIA Parts Service Specialist said they would be happy to provide the battery to me - they don't stock it-it would take a couple of days to a week to get it and the price was $157.48. I am located in the Central United States.

I also sent an email to Interstate Battery Company Support Department with all the Speciations for the KIA NIRO PHEV Battery and asked them if they could supply a recommendation for a replacement battery for the CMF45L-DIN.
I will post their answer when and if they reply.

Note: I have already searched their site and picked out a couple of their batteries that I think would work but they where all $20 to $50 more expensive than the all inclusive price of $157.48 KIA quoted me.

 

[FlNiro]

Out of curiosity I called our local KIA Dealer Parts Department today and inquired about the 12v battery for our 2019 PHEV NIRO. They have always been helpful to me, I buy my oil filters and air filters from them when I need parts. They are friendly and courteous and don't seem to mind questions and helping out people.

The KIA Parts Service Specialist said they would be happy to provide the battery to me - they don't stock it-it would take a couple of days to a week to get it and the price was $157.48. I am located in the Central United States.

I also sent an email to Interstate Battery Company Support Department with all the Speciations for the KIA NIRO PHEV Battery and asked them if they could supply a recommendation for a replacement battery for the CMF45L-DIN.
I will post their answer when and if they reply.

Note: I have already searched their site and picked out a couple of their batteries that I think would work but they where all $20 to $50 more expensive than the all inclusive price of $157.48 KIA quoted me.

Sounds like you have a good dealer. That price sounds good. The last battery I bought was 2 yr. ago for my Sedona, it was $150 installed at my Kia dealer.

 

[Johnxyz]

I wanted to follow up from my post #23. Interstate Battery did not help with a part number for their Battery.

However I did go to our Advanced Auto Part Store to check out a Battery they had in stock. It is a DieHard H4 Model with dimensions almost exactly like our PHEV Battery. Its price is $189.00- about $30 above what the KIA Dealer quoted for their battery that they would have to order.
The DieHard Battery has a 3 year year warranty.

Disclaimer: did not purchase as I don't need it and of course did not try to install it only visually looked at it to confirm measurement and compatibility with battery hold down system on our vehicle.

I was very happy to find a replacement battery locally at our towns part store.

Here is a link to the Battery (currently they have a sale on for $20 off on products over $100)

Advance Auto Parts - Down for Maintenance

Link says down for maintenance but it takes you directly to the battery, note: it also has vent ports on each side to hook up existing vent hose

Of course the vehicle fitment software does not show if fitting the NIRO as the Niro PHEV is not popular enough to be researched and listed in many suppliers databases.

 

[george]

BCI Group 140R and DIN Group H4 batteries look like direct replacements for the OEM Rocket CMF45L-DIN battery.

 

[Paulksam]

I wanted to follow up from my post #23. Interstate Battery did not help with a part number for their Battery.

However I did go to our Advanced Auto Part Store to check out a Battery they had in stock. It is a DieHard H4 Model with dimensions almost exactly like our PHEV Battery. Its price is $189.00- about $30 above what the KIA Dealer quoted for their battery that they would have to order.
The DieHard Battery has a 3 year year warranty.

Disclaimer: did not purchase as I don't need it and of course did not try to install it only visually looked at it to confirm measurement and compatibility with battery hold down system on our vehicle.

I was very happy to find a replacement battery locally at our towns part store.

Here is a link to the Battery (currently they have a sale on for $20 off on products over $100)

Advance Auto Parts - Down for Maintenance

Link says down for maintenance but it takes you directly to the battery, note: it also has vent ports on each side to hook up existing vent hose

Of course the vehicle fitment software does not show if fitting the NIRO as the Niro PHEV is not popular enough to be researched and listed in many suppliers databases.

Why does this battery and the original have vent ports on each side but only one vent hose connection?

I wanted to follow up from my post #23. Interstate Battery did not help with a part number for their Battery.

However I did go to our Advanced Auto Part Store to check out a Battery they had in stock. It is a DieHard H4 Model with dimensions almost exactly like our PHEV Battery. Its price is $189.00- about $30 above what the KIA Dealer quoted for their battery that they would have to order.
The DieHard Battery has a 3 year year warranty.

Disclaimer: did not purchase as I don't need it and of course did not try to install it only visually looked at it to confirm measurement and compatibility with battery hold down system on our vehicle.

I was very happy to find a replacement battery locally at our towns part store.

Here is a link to the Battery (currently they have a sale on for $20 off on products over $100)

Advance Auto Parts - Down for Maintenance

Link says down for maintenance but it takes you directly to the battery, note: it also has vent ports on each side to hook up existing vent hose

Of course the vehicle fitment software does not show if fitting the NIRO as the Niro PHEV is not popular enough to be researched and listed in many suppliers databases.

Why does this battery and the original have vent ports on each side but only one vent hose attachment? I would not for sure recommend this but I replaced my PHEV 12 volt with a NAPA part # 4026R($100). sealed battery they claim has low gas emitting and has vent ports that need some adapting because of shape. Battery fits in compartment but no room for mounting clamp on the bottom. NAPA also has a 6526R (about$120). Same size but 18 month replacement.

 

[Johnxyz]

So that you can mount the hose to either port to whichever best fits the application and cap the other port..

The battery in the battery group I recommended is an exact fit and will fit the existing clamps perfectly.

 

[Paulksam]

So that you can mount the hose to either port to whichever best fits the application and cap the other port..

The battery in the battery group I recommended is an exact fit and will fit the existing clamps perfectly.

"other" port not capped on original battery?

 

[Techy]

"other" port not capped on original battery?

That is an interesting question. I do not have a PHEV so I cannot check. Maybe others with the PHEV/EV can verify that uncapped vent?

 

[Johnxyz]

I am a NIRO PHEV Owner

Here are actual pictures of the NIRO PHEV Battery showing the battery in the space it must go into, when it is installed, the ported vent side of the battery and the opposite plugged side of the battery.

To see the difference on the ported and plugged side of the battery you must be inquisitive enough to shine a flashlight into the inverted male port plug to see that it is indeed plugging the vent. Both the inverted male plug and the port fitting can be switched from side to side to accommodate different applications. This would be common to almost every vent ported battery ever made. If your inverted male plugged port was punched open someone has butchered the installation or it is a manufacturing defect.

If you driving around with an unsecured battery - this is not a good practice, it could have disastrous results in the right situation. Think of a vehicle rollover gas coming out and a sparking battery thrown from its mounting space. When installing a 12v battery that resides in the vehicle interior it is important to properly secure that battery and to vent the Sulphur Dioxide gas that batteries produce in certain situations.

I do realize someone new to automobiles and maintenance would have questions and limited knowledge on what is acceptable or not.

How AC Delco handles the venting for its batteries/ NIRO uses a different type vent plug but same concept.

Battery Vent Plug Installation – TechLink

gm-techlink.com

 

[Dovidan]

Thanks for this info Johnxyz.
I recently saw this 12v battery replacement 2019 PHEV indicating that a reasonably priced replacement battery is now available at Auto Zone (probably other places as well).
It would be interesting to see what they provide for venting - if anything.

 

[Techy]

Thanks for the pics, which shows the connected vent and blocked vent. A new battery with 2 vents would provide a plug for the vent not required.
When I see the 410 CCA, there is no reason why that battery should not be sufficient for the Niro because it does not have to provide current to crank the ICE.
The problem is with the charging algorithm and Kia/Hyundai either has to fix that or switch to the lithium 12V that is currently found in the HEV.

 

[opticsguy]

EarthX makes Lithium replacements for small lead acid batteries. I've let one sit 4 months without losing any charge I could measure

 

[Techy]

EarthX makes Lithium replacements for small lead acid batteries. I've let one sit 4 months without losing any charge I could measure

I think the Niro battery would not qualify as "small lead acid"???
I agree with sitting many months without losing charge but again, in the Niro there will be some loss due to electronics.

 

[Johnxyz]

In our case the NIRO PHEV has had two instances of the 12v battery not starting the car; 1st. I don't think I got the luggage lid completely closed, it drained the battery, 2nd. we did not drive the NIRO for 3 weeks during covid. At both times we hung the keys at the garage door in close proximity to the vehicle. We now keep the fobs in the kitchen in a tin box.

We have had the NIRO PHEV for 3 years and now closing in on 40,000 miles.

The NIRO PHEV will cycle the Auxiliary Battery Saver 10 times at each incident to attempt to charge the 12v battery back up. After that it locks this system out to prevent the Hybrid battery from becoming too discharged.

I think both incidences we had could have been prevented by myself. As a countermeasure we carry a Battery Booster in the vehicle and charge/condition the NIRO PHEV battery every 6 months overnight with a BatteryMinder with the battery still hooked up in the car. With these two countermeasures the 12v battery is performing excellently and is really not a concern.

I wonder how many individuals who report repetitive problems with the NIRO EV and NIRO PHEV unknowingly have installed auxiliary components in the vehicle that cause problems ex. dash cams that are always on or come on when motion is detected, OB scanners that are constantly reporting out to smart phones, devices that are plugged in and remain on when the vehicle is off etc.

An important point is that the Auxiliary Battery Saver System is a selectable item on the user drop down menu on the car. The box must be checked for the Auxiliary Battery Saver System to function, if the box is not checked then the the Auxiliary Battery Saver Function is disabled. Information is on page H35 of the 2019 NIRO PHEV Owners manual

 

[Techy]

With the technology that is available, I think it would be extremely easy for Kia/Hyundai to program and provide for a "smart trickle charge" on the 12V battery every time the charging cable is connected...problem solved!!!

 

[Dovidan]

I've been spending some time on the Ford Escape site and noticed that Ford HEVs have a very similar problem with their OEM 12v batteries dying in 2-3 years. I wonder if it just cheap OEM batteries or an unintended "design feature" of HEVs & PHEVs???

 

[dblackfl]

With the technology that is available, I think it would be extremely easy for Kia/Hyundai to program and provide for a "smart trickle charge" on the 12V battery every time the charging cable is connected...problem solved!!!

I've measured 12V SOC increases when the car is actively charging its HV battery, and when on/being driven around. Just those two, and more quickly when the car's on. Once HV charging stops, the 12V begins to slowly discharge, even when still plugged in. I haven't yet tried to find out how "smart" any of this is.

 

[Techy]

The HEV does not have the 12V problem because it has a 12V lithium battery and that battery is fine with a lower SOC for extended time periods and it also has the 12V reset switch - BONUS!