Battery For Mazda Cx-5? Need Help?

[aman1033]

Hi,
So Today , Dealership fixed my AC smell issue, Now they told me to replace the Bttery because its too old
and I installed 2 sub-woofer in car , so they told me to get bigger battery

I do not know anything about Batteries Company.

I saw one Battery Company online OPTIMA yellow top, Model 8040-218

Please me let know if its better for car setup

Any suggestion ? or any other battery company?

 

[fdew]

I would not replace a battery just because it is old, but when replacing, I would get the highest Amp Hr battery that will fit in the space. I would not get a Optima

 

[craigo]

I would not replace a battery just because it is old, but when replacing, I would get the highest Amp Hr battery that will fit in the space. I would not get a Optima

Age is a great reason to replace them. Better than be suddenly stranded. And with the high compression of the skyactiv engines, the starter needs more power to turn the engine meaning that they may wear out quicker. Here in the southern states, heat takes a toll so I replace mine every 3 years.

Just did this in fact, the starter was audibly struggling at times. The dealer with OEM had the best deal on a battery with 3 year full replacement warranty.

 

[yrwei52]

So Today , Dealership fixed my AC smell issue, Now they told me to replace the Bttery because its too old and I installed 2 sub-woofer in car , so they told me to get bigger battery

No, you don't replace your battery just because it's too old or you have two sub-woofers. You replace the battery when it shows sign of weakness when your starter is struggling to start your engine. Even if you want to be proactive, the best time to replace the battery is before the winter comes, not right now.

I'd not use Optima battery as it's expensive. If you're not sure, get a battery with most months of replacement warranty and total prorated warranty. Like craigo suggested, OEM battery with 3-year replacement warranty seems to be a good choice.

 

[CX5_Pete]

Age is a great reason to replace them. Better than be suddenly stranded. And with the high compression of the skyactiv engines, the starter needs more power to turn the engine meaning that they may wear out quicker. Here in the southern states, heat takes a toll so I replace mine every 3 years.

Just did this in fact, the starter was audibly struggling at times. The dealer with OEM had the best deal on a battery with 3 year full replacement warranty.

One interesting thing I learned on this forum is that during a compression test, the pressures are much lower than other engines of this size. This leads me to believe that on engine shut off the valve timing defaults to Atkinson cycle and so the compression isn't as high as expected.

What I am trying to say is that even though the compression is high, it doesn't necessarily mean it needs a super strong battery.

 

[craigo]

One interesting thing I learned on this forum is that during a compression test, the pressures are much lower than other engines of this size. This leads me to believe that on engine shut off the valve timing defaults to Atkinson cycle and so the compression isn't as high as expected.

What I am trying to say is that even though the compression is high, it doesn't necessarily mean it needs a super strong battery.

Interesting, will have to look into it.

 

[yrwei52]

... And with the high compression of the skyactiv engines, the starter needs more power to turn the engine meaning that they may wear out quicker.

This is not true. Although SkyActiv-G engines have high 13:1 or 14:1 compression ratio, but with Atkinson cycle the compression pressure actually would be low, hence lower load for starter and less effectiveness on engine brake.

Compression test readings to expect from 2.5L Skyactiv?

From FSM:

Specification:
Compression [SKYACTIV-G 2.0]
Standard: 885 kPa {9.02 kgf/cm2, 128 psi} (300 rpm)
Minimum: 708 kPa {7.22 kgf/cm2, 103 psi} (300 rpm)
Maximum difference between cylinders: 150 kPa {1.53 kgf/cm2, 21.8 psi} (300 rpm)

Compression [SKYACTIV-G 2.5]
Standard: 954 kPa {9.73 kgf/cm2, 138 psi} (300 rpm)
Minimum: 763 kPa {7.78 kgf/cm2, 111 psi} (300 rpm)
Maximum difference between cylinders: 161 kPa {1.64 kgf/cm2, 23.4 psi} (300 rpm)

NOTE:
Because the SKYACTIV-G 2.0 and SKYACTIV-G 2.5 retards the intake valve closing timing, compression pressure is low.

 

[aman1033]

Dealership told me that my battery at 330 CCA left , they told me to charge the battery or replace it

Sent from my Nexus 6 using Tapatalk

 

[yrwei52]

Dealership told me that my battery at 330 CCA left , they told me to charge the battery or replace it

If you drive your CX-5 everyday without any starting problems, then don't worry about it. Your battery should be fully charged while you're driving around for 10~30 minutes. As I said, change your battery in October or November at your dealer if you're really worried.

 

[limleong]

Hi,
So Today , Dealership fixed my AC smell issue, Now they told me to replace the Bttery because its too old
and I installed 2 sub-woofer in car , so they told me to get bigger battery

I do not know anything about Batteries Company.

I saw one Battery Company online OPTIMA yellow top, Model 8040-218

Please me let know if its better for car setup

Any suggestion ? or any other battery company?

Please note for CX5 with stop/start technology. The battery has to be OE specs otherwise it will fail quite quickly with frequent stop/start. Best is to replace like for like with OE specs. I would not think Optima will do the job as it is not rated as a stop/start battery.

 

[fdew]

Please note for CX5 with stop/start technology. The battery has to be OE specs otherwise it will fail quite quickly with frequent stop/start. Best is to replace like for like with OE specs. I would not think Optima will do the job as it is not rated as a stop/start battery.

The Mazda system uses the engines combustion to restart it and unlike other stop-start systems, Mazda's i-stop uses an i-eloop capacitor rather than the car's battery to maintain electrical functions when the engine is off. The battery is not involved at all.

http://www.mazda.com/en/innovation/technology/env/i-stop/

 

[limleong]

The Mazda system uses the engines combustion to restart it and unlike other stop-start systems, Mazda's i-stop uses an i-eloop capacitor rather than the car's battery to maintain electrical functions when the engine is off. The battery is not involved at all.

http://www.mazda.com/en/innovation/technology/env/i-stop/

Unless the USA CX-5 is a special build (which it could be), Asia Pacific CX5 requires special start/stop battery for both petrol and diesel engines:

https://www.mynrma.com.au/roadside-...es/stop-start-vehicles-battery-technology.htm

http://www.topgear.com.ph/news/technology-news/mazda-s-i-stop-system-requires-special-battery

Also CX5 does not have i-Eloop unless the USA CX5 is different to other countries.

The Diesel CX5 stop/start battery is nearly twice the size of a normal battery. It is huge !

 

[fdew]

Unless the USA CX-5 is a special build (which it could be), Asia Pacific CX5 requires special start/stop battery for both petrol and diesel engines:

https://www.mynrma.com.au/roadside-...es/stop-start-vehicles-battery-technology.htm

http://www.topgear.com.ph/news/technology-news/mazda-s-i-stop-system-requires-special-battery

Also CX5 does not have i-Eloop unless the USA CX5 is different to other countries.

The Diesel CX5 stop/start battery is nearly twice the size of a normal battery. It is huge !

I don't know but it seems that Mazda should know

i-stop and Gasoline Engines


While conventional idling stop systems rely on a starter motor to restart the engine, Mazda's i-stop restarts the engine through combustion; fuel is directly injected into a cylinder while the engine is stopped and ignited to generate downward piston force. The result is a quick and quiet engine re-start compared to other systems and a significant saving in fuel.

To restart the engine by combustion, the compression-stroke and expansion-stroke pistons need to be stopped at exactly the correct positions to create the right balance of air volumes. Mazda's i-stop ensures precise control over the piston positions during engine shutdown. With all the pistons stopped at the optimum positions, the system then identifies the initial cylinder for fuel injection. It injects fuel and ignites it to restart the engine. Even at extremely low rpm, cylinders are identified for sequential ignition, making the engine quickly pick up to idling speed.

These technologies enable the system to restart the engine with exactly the same timing every time, to enhance fuel economy, and to deliver smooth and comfortable acceleration for the driver at restart. The restart takes place in a mere 0.35 seconds (internal measurement on vehicle with automatic transmission), which is about half of the time taken by conventional starter-motor idling stop systems.

 

[CX5_Pete]

Dealership told me that my battery at 330 CCA left , they told me to charge the battery or replace it

Sent from my Nexus 6 using Tapatalk

Has it been past the 3 years or 36k miles yet? I would take advantage if you are still under battery warranty.

 

[xtrailman]

Change it if the dealer will fit it under warranty, otherwise why bother i usually keep my cars around 4.5 years and have never changed a battery. In fact i havent seen the need to change one since i had a old Mk1 Ford cortina in the 70's.

I have the diesel and a OE battery for that costs a lot, its 80AH. See link.

http://thebatteryshop.co.uk/yuasa-12v-80ah-780a-efb-start-stop-battery-ybx7335-t110-8949-p.asp

The cranking capacity i believe will vary depending on the present state of charge, so can be misleading, i'm assuming they tested it with a capacitance tester?

https://www.youtube.com/watch?v=XtWflJTp_mM

 

[yrwei52]

Please note for CX5 with stop/start technology. The battery has to be OE specs otherwise it will fail quite quickly with frequent stop/start. Best is to replace like for like with OE specs. I would not think Optima will do the job as it is not rated as a stop/start battery.

Sorry we don't get those goodies such as i-stop and i-eloop system on CX-5 in US/NA market. And battery does't need to be a "stop/start" certified here.

It hard to say by Mazda's documents if the starter and battery are involved in Mazda's unique i-stop stop/start system. But I did see a diagram showing the starter, hence the battery is indeed involved in re-starting the engine.

 

[ijaen]

What happened to the AC system? What did they fix?

 

[CX-5um]

You can try checking the water level of the battery and topping off with distilled water. Be sure to remove the battery and fully clean the outside so that contaminates don't fall in. Then use a new clean funnel. Should be able to increase your CCA's and prolong its life but yeah, 3 years for that OEM battery was about how long ours lasted before replacement.