My OEM battery and starter took a crap on me, left me stranded near a restaurant where i was picking up food. It had been coughing for a while, with occasional difficult starting. When I took it for repairs, it started fine and we could not replicate the issue for a couple days. Of course, i get the car back and i get screwed
Anyways, I decided to splurge a bit on a lithium battery from Antigravity. This is totally unnecessary - you can get any battery from Walmart or an Optima Redtop for less money and it will fit and work and you'll be happy. This is in the track forum because it's probably the context where you'd want to use such an item
OEM battery is 44 lbs i believe
Redtop is 31.7 (per Optima)
Antigravity Group 51R is 8.5 lbs - this is an insane difference when you pick it up and compare it to a stock one
Other than weight, another attractive factor is the RESTART function, which basically lets you press a button and restart the battery when it ties, because it detects when it's getting low and preserves enough charge for another start
I got a package put together by phunk and CJ Motorsports, which included:
https://antigravitybatteries.com/pro...ive/ag-51r-rs/
(24 aH version) Comes with 2 keyfobs for remote reset. I personally don’t carry the keyfobs, I am OK with using the reset on top of the battery in the rare event I would even need it.
AG Lithium Battery Tracker:
https://antigravitybatteries.com/pro...acker-lithium/
Bluetooth device for monitoring your battery from your phone when in Bluetooth range.
CTEK Lithium Charger:
https://antigravitybatteries.com/pro...ek-lithium-us/
CTEK "comfort panel":
https://www.ctek.com/uk/products/car...tor-panel-1-5m
A cool inexpensive part you can optionally install. It has LED status indicators, but more interesting to me is the charger connection port it has for the CTEK charger. You could put this panel on the battery compartment cover, or somewhere in the interior, or wherever, and it allows you to plug in the charger without having to get the large alligator clips on the battery terminals.
This is an OEM battery size for a GTR, but fits snugly with the OEM tiedown, no shiftiness at all. Plenty of empty space in there for the other stuff:
Overall fit
CTEK "comfort panel" which is mainly an adapter
Alligator clamps that are no longer needed
Charger. Runs to a wall socket, connects with a plug into the comfort panel
Really not needed, just snazzy to have, a bluetooth battery health tracker:
Remote restart fob (comes with 2). Can't imagine when this would be needed, you can just press a button on the battery, but hey . . . they look nice?
These pix have nothing to do with the battery. I'm just showing off the Zspec dress up bolts and some Z1 red silicone hoses
I really need an aluminium coolant tank and PS reservoir
Anyways, i could lie and tell you that driving home I felt a difference of 30 lbs , but you'd know its a lie. I'm fat enough to make up the diff.
It did start up noticeably stronger - turns out i had a bad ground too. Rain water from the vented hood must have ****** up my starting system, but a new ground wire and the new battery/starter solved everything. Peace of mind that i can actually start the car now
Install was an hour for the battery alone, mainly nissan made it a pain to remove multiple pop-rivets; my other specific work took a little more time.
Much thanks to phunk and spooler for the recommendation. I think only a handful of people are running lithium here; if any issues arise i will document in this thread