Paid 139 US  here: Capacitors :: Car Audio Deals
 
The BatCap 800
 
 
 
 
 
 
 
 
 
 
 
 
2004 mini cooper s vs. batcap800
almost a 3rd of the depth…almost
 
drawf’s it
2004 mcs batt bay
i used a 1/4 x 1/2 cut washer
look closely…i used the oem battery terminal compression bolt
the bottom side of the compression bolt on OEM battery
offset this a bit more
i will be using wood blocks to secure ( the mini started right up test drove all good )
stock battery