Odd starting issue(?) maybe - Page 2

clg82 · 07-17-2025, 11:46 AM

Quote:

Originally Posted by 2023_ZL1-AUTO

I had this issue after picking my car up from Katech this past spring. I even sent an email to Mike mentioned I noticed the had to crank over like 5 to 6 seconds before starting. Mike told me to check my battery voltage, and it was low. I charged the battery but still had the issue, but when checking the voltage it was still low. I put up with that for a few weeks and the battery finally totally died. Got a new battery and the car started perfectly like normal and ran fine!

What battery did Katech recommend?

2023_ZL1-AUTO · 07-17-2025, 12:57 PM

Quote:

Originally Posted by clg82

What battery did Katech recommend?

Funny thing is, I purchased the exact replacement battery I had from the factory. But then, a day later ZLRob mentioned I should get a lithium. So I did, I order the Antigravity H6/Group-48 Lithium ($800). It's light as a feather (only half kidding), and it was fairly easy to installed! Well, only after I called Katech and they told me how to loosen and tighten the 10mm battery terminals !

clg82 · 07-17-2025, 01:15 PM

Quote:

Originally Posted by 2023_ZL1-AUTO

Funny thing is, I purchased the exact replacement battery I had from the factory. But then, a day later ZLRob mentioned I should get a lithium. So I did, I order the Antigravity H6/Group-48 Lithium ($800). It's light as a feather (only half kidding), and it was fairly was easy to installed! Well, only after I called Katech and they told me how to loosen and tighten the 10mm battery terminals !

You're catching on haha, I'm looking at those Antigravity batteries, they sure are pricey.

Which AMP hours did you go with?

2023_ZL1-AUTO · 07-17-2025, 01:58 PM

60Ah=1800 Cranking Amps

ZLRob · 07-18-2025, 09:02 AM

Quote:

Originally Posted by 2023_ZL1-AUTO

Funny thing is, I purchased the exact replacement battery I had from the factory. But then, a day later ZLRob mentioned I should get a lithium. So I did, I order the Antigravity H6/Group-48 Lithium ($800). It's light as a feather (only half kidding), and it was fairly easy to installed! Well, only after I called Katech and they told me how to loosen and tighten the 10mm battery terminals !

Seriously. My battery weighs what seems to be 30lbs or less. Helps for weight reduction too for the weight nerds who are into that sort of thing.

07-17-2025, 01:58 PM	#18
2023_ZL1-AUTO Drives: 2023 ZL1 Join Date: Dec 2022 Location: Columbus, Ohio Posts: 1,287	60Ah=1800 Cranking Amps __________________ Katech Track Day CAM 38%•BTR Dual Valve Springs•Johnson Lifters•Trend 3/8 Chromoly Pushrods• VVT Del•CNC Heads•AFM Delete• C5-R Timing Chain•Katech Oil Pump•Katech 112mm•Maggie 2650 3.25” Upper/ATI SD w/10.32” +20%•10 Rib Belt•RFBG•FI IC Stage 2•THPSI Port w/875cc Inj•Katech Dual Fuel Pump•DSX Aux Pump•SW 2" Headers w/Legend NPP•GESI UHO 4.5" CATs•Brisk RR14S Plugs•BMR Motor Mounts•BMR Cradle Lockout &Bushings Kit•BMR Rear Suspension & 15" Conversion•DSS 1pc DS•RPM 6-Point Roll Cage•10lb FireSense+ w/4Fire SFI 17.1 Fire Sys•Weld Forged Vitesse Rear 17x10 Beadlocks-Front 18x6•Unlocked TCM

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