New & genuine Dell Equallogic controller battery pack.

Compatible with following EQL arrays :

Dell Equallogic PS4210
Dell Equallogic PS6210
Dell Equallogic PS6610

Controller types :
- 15 (black)
- 18 (blue)
- 19 (pink)

A weared out battery will be disabled after its end of life warning resulting in a drastic I/O performance drop (write cache down)

These modules doesn't have the five year time bomb. They will work till the embeded cells will give up.