In the Datsun 1200 I vintage race I currently use a Group 51 Civic battery. Here in the Nevada desert batteries last between 3-5 years tops, said battery is now at 3 1/2 years so it's getting close.
I was contemplating swapping the lawn tractor U1 battery from my Formula 500 (total loss ignition) and so, the bigger battery woul be good for it. I'm also need to add lead to the F500 so the extra weight isn't a big deal. I also have 2 UB18120 (18 amp hr) batteries form the F500.
The U1 battery is 15lbs and 230CCA and the UB18120s are 14-15lbs but may be marginal for cranking power.
Something like an Antigravity battery or similar would save 24lbs over the Group 51 and 13lbs over the U1. The $200 isn't a big deal but basically I'm lazy; I run the Datsun 5 to 7 times a year and I the summer (it's 114 out) the car sits for as much as 2 months without being started. I don't have the car on a battery maintainer. I simply charge up the battery and start the car.
There have been plenty of post about Lithium batteries on here but they don't seem to go into depth about how much neglect if any the lithium batteries will tolerate? I have one in my dual sport bike which sometimes may sit for 4-5 weeks at a time and it's been fine. Note the car does have a master kill switch. So do I need to religiously keep the battery on a maintainer or can I let it sit as long as there is no draw? In general will they tolerate a abusive hack like me?
One of the attractions is not so much about the overall weight savings but the fact that I can leave the battery in the stock location for ease of servicing while taking 24lbs of the right front corner.
Anything people who've used them can share is appreciated.
