Terry L

What batteries are people running? Comments, please.

tcsracing1

voltphreaks has served me well to date.

Terry L

Hiow about size/weight/capacity? I gather that going too small is bad, but 10lbs? 15? What is the sweet spot?

32krazy!

voltphreaks vph-900. 7 lbs and has the ability to shut oitself off when voltage drops below 12 volts. hit the buttopn battery recharges and allows the car to start to continue to charge the battery. not cheap but very well made great customer service and the battery can be sent in for repair if it fails to charge

Jferrante

I use this odyssey and bought a second I keep in the trailer or tow rig.

Here is the website that details all their batteries
http://www.odysseybattery.com/extrem...ery_specs.aspx

Viperbob1

Lithium Ion in PC925 form factor... NEVER HAD AN ISSUE in over 2 years. Never had to charge. Awesome. Although was $1100.

chrcook

Odyssey on season 5. Yes, I keep a trickle on it, but it cranks every time track side. Never have had to us use the booster pack on the passenger side.

tcsracing1

I bought a refurbished 9lbs unit from them.
Use it in my street/track GT3RS.

Jferrante

I use a kill switch when car is sitting. car has no issues cranking either

Terry L

Voltphreaks website notes an incompatibility problem with Porsche GT3s which charge at less than 12.5 volts and therefore won't charge the battery. Anybody have such an issue?

Viperbob1

They charge right at 14v.

Terry L

One more question. I have the electric steering pump up front which runs all the time when the main switch is on. When the car is running, is the alternator creating enough current so that there is no drain on the battery? I assume so but what do I know. So is the lithium battery compatible with the electric steering pump setup?

jbxea1

I have had a Voltphreaks VPR-P6 since 2012 with zero issues. I ran it first in my 997.2 GT3 and for the last three seasons in my 997.2 Cup. Low voltage cutoff is great and only weighs 6 pounds.

gt2-josh

I have a Porsche Motorsports lithium battery that I believe was an option on the 991 GT3 RS. It's standard size so no funky mounts required. My plans have changed and I need to sell it. It's brand new never even test fit in a car. I have all the factory manuals. I believe it's $3200 from a Porsche dealer. I'm willing to let it go for less than half that amount. PM if interested. Thanks JBO

HiWind

also have vph750 from Tony @ Voltphreaks .. also run the electric RSR PS pump .. season 5 no issues