How about amps

[rollin thunder]

Nobody talks about amps very much .Its all about the volts.Electrical guys always tell me volts dont hurt you ,its the amps.When i look for a good battery for the Max I look for a battery with a high amp rating like 220.I feel thats what spins your starter .With that in mind wouldnt a battey with a 220 amp rating getting 12.5volts spin your starter better than a battery with a 180 cca rating running at 14.0 volts

 

[RaWarrior]

There's one more component to the electrical equation that really matters: watts

Watts= Volts*Amps.

You're right, amps are what can kill you, and it doesn't take much. IIRC, it's like 15 milliamps (.015 amps) across your heart to stop it. Amperage flow also generally dictates the wire gauge needed.

When shopping for a battery, more amps is generally better, indicating the maximum current that the battery can deliver at a given time.

However, a battery is not at 14v while cranking, or even 12. It's more like 10.

220ca*10v= 2200 watts
180ca*14v= 2520 watts

A beefy microwave takes 1500w, so your vmax needs a hefty jolt to crank over. It's why high-draw electrical fixtures often use 220v instead....otherwise wire gauges would be impracticably large to run them on 110. A motor that takes 10 amps on 220 would need 20 on 110 to do the same work.

So "in theory", a 180amp source at 14v would provide more energy than a 220 amp source at 10v. But your battery is only at 14v with the engine running. Shut it off and wait a couple hours, and it will be back down to 12.6 (lead acid produces 2.1v per cell).

That said, a higher amp battery won't lose as much voltage as a lower amp battery when placed under the same load, so wattage output will be higher from both aspects.

 

[one2dmax]

I believe the OEM is 220'ish CCA. I know the bigger battery is 320CCA. Not sure what the rating for the Odyssey PC680 is?

 

[rollin thunder]

Wow that some good info!.

 

[bud7680]

I believe the OEM is 220'ish CCA. I know the bigger battery is 320CCA. Not sure what the rating for the Odyssey PC680 is?

Here is what I found:

Odyssey L Terminal Adapters

• Odyssey PC680 Drycell Battery
• Without Metal Jacket
• 12 Volt
• 16 Ah @ 10hr rate
• 220 CCA
• 680 Cranking Amps for 5 Seconds
• 24 Minute Reserve Capacity
• Cycle life @ 77? F 400 at 100% DOD
• -40? F to 140? F Temperature Range
• Replaces 0645-197, DYNA-BATT 5575B, 5575C
• More Specs: (Adobe PDF)
• Catalogue number 0769-2016
• Made in the USA

Features:

• 3 to 10 year service life, when properly maintained.
• 99.9% pure lead providing minimal plate corrosion
• Explosion proof
• Corrosion proof
• 2 to 3 times the cranking power of equivalent size battery
• Spill and leak proof
• Superior vibration resistance
• Fully Charged out of the box
• When fully charged can be stored for up to 2 years at 77? F
• May be installed on its sides at any angle without sacrificing performance attributes
• Military grade version of the Hawker Genesis
• 2 Year Full Powersports Warranty
• Made in the USA
• Includes L adapters listed below

Note: Please check dimensions and terminal configuration to ensure this is the proper battery for your application.
2 Batteries in 1

The Odyssey PC680 battery combines in one box the characteristics of two separate batteries. It can deep cycle (be recharged) as well as provide enormous cranking power.
Military Grade

Only Hawker Odyssey batteries are based on the same battery technology offered by Hawker to the military for aircraft and tank batteries. Odyssey batteries are of military grade and have endured rigorous tests that demonstrate their overall ruggedness and exceptional tolerance of mechanical abuse.
Superior cranking and fast charge capability

The 5 second cranking power of Odyssey batteries is double to triple that of equally sized conventional batteries, even when the temperature is as low as - 40? C. Also, with simple constant voltage charging (alternator or independent charger), there is no limitation on the inrush current, so the user is assured of a fast charge.