Actually LL P7 is 4xAAA light. But weight consideration is pretty interesting since I have never thought about it before as a factor while choosing a light. I weighted few lights with batteries for comparison:
-2D maglite around 700+ grams (was too much for my scale to measure)
-LL P7 195g
-Mini Maglite(2xAA) 110g
-Ultrafire C3 (1xAA) 60g
-Fenix L0D with keychain hook around 30g
-2D maglite around 700+ grams (was too much for my scale to measure)
-LL P7 195g
-Mini Maglite(2xAA) 110g
-Ultrafire C3 (1xAA) 60g
-Fenix L0D with keychain hook around 30g