Dell KR174 5E 6E Raid Controller Battery. 
This battery has the plastic tabs on it for mounting onto the raid card. 
Some card part numbers: XM768, GP297, DM479, FY374, J155F, and others. 

Condition : Refurbished, System Plled, Tested

Availability : In Stock
Shipping : Free Ground
Our Warranty : 30 Days