1+ Clamp  
2+ Wing nut  
3+ Spring washer  
4+ Battery rod  
5+ Battery spacer  
6+ Battery tray  
7+ Battery tray drain tube  
8+ Setscrew  
9+ Shakeproof washer  
10+ Plain washer  
11+ Plain washer  
12+ Hexagonal nut  

The part numbers in the assembly image below relate to the product number in the table. Clicking on the part number will open up the relevant part details.