Will any of these batteries work for my Boxster?

[motoadve]

987 Triptronic Boxster.

Will any of these batteries work?

They have enough power?

I use the car twice or once a week.

My intention is loosing some weight on the car, Im installing an AWE exhaust which is 15 pounds lighter, sounds better and claims a few more torque and HP.

So another 30 pounds less with a lightweight battery was my next decission.

PC925T

Price $134.99

# 925 cranking amps for 5 seconds

# 870 cranking amps fpr 10 seconds

# 765 cranking amps or 20 seconds

# Short circuit current over 2400A

# 28 amp hours

# 50 minute reserve capacity with 25amp load

# Female brass terminal w/M6 SS bolt

# Length 6 15/32"

# Width 6 7/8"

# Height 4 7/8"

# Weighs 23 lbs

Package Details

Weight: 23

Or this one?

http://www.jegs.com/webapp/wcs/stores/serv...10002_841891_-1

[paulv]

987 Triptronic Boxster.

Will any of these batteries work?

They have enough power?

I use the car twice or once a week.

My intention is loosing some weight on the car, Im installing an AWE exhaust which is 15 pounds lighter, sounds better and claims a few more torque and HP.

So another 30 pounds less with a lightweight battery was my next decission.

PC925T

Price $134.99

# 925 cranking amps for 5 seconds

# 870 cranking amps fpr 10 seconds

# 765 cranking amps or 20 seconds

# Short circuit current over 2400A

# 28 amp hours

# 50 minute reserve capacity with 25amp load

# Female brass terminal w/M6 SS bolt

# Length 6 15/32"

# Width 6 7/8"

# Height 4 7/8"

# Weighs 23 lbs

Package Details

Weight: 23

Or this one?

http://www.jegs.com/webapp/wcs/stores/serv...10002_841891_-1

motoadve,

While searching around, I discovered that the battery needs to have a 70Ah rating with at least 340A. Use this as minimum requirements. Good luck.

Regards,

paul...

[motoadve]

Thank you Paul.

So will this one work?

Im not tech inclined so dont understand what the specs means.

I live in Costa Rica, weather is never below 70 degrees

# Racing Battery21 lbs

# 6.60'' x 5.20'' x 6.80''

# 1300 Cranking Amps

147-B3121

At 21 pounds this battery offers over 1300 cranking amps, but still weighs 50% less than its closest competitor. Perfect for Audio Systems, Extreme Motors, High Compression, Supercharger Systems, Large Cams, Underdirce Pulleys and No Alternators. 6.60'' x 5.20'' x 6.80'' 550 cca (0 degrees)/742ca (32 degrees)/1380ca (80 degrees).

Or this one?

975a 35ah

[fasterjames]

Perfect for Audio Systems, Extreme Motors, High Compression, Supercharger Systems, Large Cams, Underdirce Pulleys and No Alternators. 6.60'' x 5.20'' x 6.80'' 550 cca (0 degrees)/742ca (32 degrees)/1380ca (80 degrees).

I would find out what 'No Alternators' means. Seems to me this isn't a battery to run a vehicle but to run high end aftermarket accessories.

Edited July 20, 2007 by fasterjames

[paulv]

Perfect for Audio Systems, Extreme Motors, High Compression, Supercharger Systems, Large Cams, Underdirce Pulleys and No Alternators. 6.60'' x 5.20'' x 6.80'' 550 cca (0 degrees)/742ca (32 degrees)/1380ca (80 degrees).

I would find out what 'No Alternators' means. Seems to me this isn't a battery to run a vehicle but to run high end aftermarket accessories.

fasterjames:

You right about that.

But motoadv needs to make sure that the batteries he's looking at have at least, the Amp-hour rating I previously posted. Cranking amps tend to be marketing things (although a true cranking amp rating is good for testing). Another option would be to use an AGM technology battery but I don't know what their availability is in Costa Rica. You can mail order those from the US because there's no acid to spill in them. Odessey makes some that are spiral wound -- the quality is pretty good.

Regards,

paul...

[paulv]

Perfect for Audio Systems, Extreme Motors, High Compression, Supercharger Systems, Large Cams, Underdirce Pulleys and No Alternators. 6.60'' x 5.20'' x 6.80'' 550 cca (0 degrees)/742ca (32 degrees)/1380ca (80 degrees).

I would find out what 'No Alternators' means. Seems to me this isn't a battery to run a vehicle but to run high end aftermarket accessories.

fasterjames:

You right about that.

But motoadv needs to make sure that the batteries he's looking at have at least, the Amp-hour rating I previously posted. Cranking amps tend to be marketing things (although a true cranking amp rating is good for testing). Another option would be to use an AGM technology battery but I don't know what their availability is in Costa Rica. You can mail order those from the US because there's no acid to spill in them. Odessey makes some that are spiral wound -- the quality is pretty good.

Regards,

paul...

motoadv,

Forget what I told you about Odyssey batteries -- I just looked them up. All their batteries that are around the 10hr rated Ah specification weigh around 60 lbs which is more than what you want.

Regards,

paul...

[motoadve]

Here is the reply from the battery manufacturer

The 70 AH rating refers to the Reserve time for the battery – this is like fuel in the tank. Basically the reserve time rating give and indication of how long the headlights, interior lights and other accessories to function without the car running. Our B3121 has a 31 ah rating and has proven to be sufficient for all types of vehicles.

Next is the 340A rating – this refers to the cranking power – like horsepower of the battery.

The B3121 has 550CCA and over 1300 pulse cranking amps – as you can see you’ll have plenty of power with this battery.

What do you guys think?

Should I go for it?