I figured out a way to lighten the load of my Whites Liberty Di. Though lighter than a 6000 DI PRO and Eagle...the 4 C cell pack Liberty Di weighed alot and put stress on the handgrip. I decided to try out a new battery arrangement. There are hollow C battery cylinders that you can insert an AA battery into. Granted,you'll have to use the biggest mah rated batteries. Even though the battery life is shortened...the lighter weight will make a big difference. I am currently experimenting with 2650 mah AA rechargeable NiMh batteries. There are some 3000 mah NiMh on the market,but I'm looking for a name brand.