Can you confirm what amp/hours rating the small batteries have?
P104: "2.4 Ah Lithium-ion battery pack holds charge 4X longer and has 2X the run time of standard batteries while being 20% lighter in weight."
P103: "45% lighter w/20% longer run time than the standard nicads."
- 1.2X longer runtime is a marginal benefit
- 45% lighter is way less of a factor when tool weight is factored in
- there is no mention of holding a charge 4X longer
The P103 is likely a 1.5Ah battery.
The Ridgid Lithiums are 1.5Ah and if want to know what Ridgid owners think about 1.5Ah batteries look at http://www.ridgidforum.com/forum/showthread.php?t=13430
There are lots of factors in runtime, and Ah is only one of them. The 18V Makita drill and driver is rated at 3.0Ah and lasts about twice as long in use as the 2.4Ah Ryobi drill and driver, so clearly there are other influences that favor Makita.