Lude Generation

I'm looking at a race battery with 310crank amps.

Is this enough to fire up the lude on a cold day?

Yarp. Which one are you looking at getting?

Edit: Check the specs of the PC680 on here for comparision of the one you're looking at. The PC680 is the one to use for a lude.

http://merlinmotorsport.co.uk/product_i ... ShoppingUK

This one. I read somewhere that the CA rating is more about the duration the car can be parked with a low current output

Cranking amperes (CA), also sometimes referred to as marine cranking amperes (MCA), is the amount of current a battery can provide at 32 °F (0 °C). The rating is defined as the number of amperes a lead-acid battery at that temperature can deliver for 30 seconds and maintain at least 1.2 volts per cell (7.2 volts for a 12 volt battery).

Cold cranking amperes (CCA) is the amount of current a battery can provide at 0 °F (−18 °C). The rating is defined as the current a lead-acid battery at that temperature can deliver for 30 seconds and maintain at least 1.2 volts per cell (7.2 volts for a 12-volt battery). It is a more demanding test than those at higher temperatures.

Hot cranking amperes (HCA) is the amount of current a battery can provide at 80 °F (26.7 °C). The rating is defined as the current a lead-acid battery at that temperature can deliver for 30 seconds and maintain at least 1.2 volts per cell (7.2 volts for a 12-volt battery).

So a battery with a relatively low CA ratings (like the PC680) can start your car if your car is in great working order and it starts instantly

Most standard batteries for a Vtec Prelude are rated at over 400 CCA, but it isn't necessary. I will be running a PC680 when the time comes, but then I also have no extras, no stereo to worry about either.

I'd say you'll be perfectly fine with that choice you had

Thanks for the info

I've just found this page tho which makes me think a bigger one may be needed

http://www.powervampracing.com/detail.asp?ID=131

Umm yeah Looking at those specs and then refering back to my original posted spec-sheet I think your battery is actually a "PC310" (Odyssey batteries all seem to have two names. The PC680 is also referred to as Odyssey 25) and for your battery it's actually the pulse current that is rated at 310... The CA is only rated at 155 for that battery! So I wouldn't recommend it.

I still suggest you go for the PC680 (aka 25), or one of simular or higher spec.