Category: Drivetrain
Price: $280
Private or Vendor Listing: Private Listing
Part fits (you may select multiples): R50, R52, R53, R55, R56, R57, R58, R59, R60
Location (Region): NorCal
Item Condition: Brand New

So I bought a bunch of these for my friends and I. One of them backed out so I'm selling his battery setup.

It's brand new so we just want to recoup his portion.

Features:
4.4 lbs kit
battery chemistry is LiFePO4 which is lithium iron phosphate - benefit you can mount this battery anywhere and in any direction.
SAE Battery Posts
550 cca
built in battery charge check
built in cell balancer so you can use a standard battery charger like a Battery Tender JR (needs to have an auto shut off feature)
3 yr warranty (i'll give you a copy of the receipt)

$280 + paypal + shipping oBo

We're currently using this setup on our track cars including:
r53, r56, s2000, e46 m3, e92 m3

 

could you use this on a weekend/track car. to be more specific will my alt keep the battery charged enough that i wont kill it if i have to drive the car for 5/6 hours out to the track??

 

yes that is the purpose of this battery

 

What is the model number? Is foam material provided to "enlarge" the battery to fit the OE battery tray? Do you have to disconnect your alternator when using this battery in an R55/R56? Can this battery be used with the alternator in a daily driver?

 

Too bad I already run a li-ion, but this is a great trade for the lead acid, or to upgrade for fun/track driving.

I run a Li-Ion battery, basically the same size in my daily (Countryman All4). Starts up strong, works prefect.

If you're looking for an easy 20 lbs to drop off the front (trust me it's a big difference), then I would grab it up!