I posted a report on STOCK game test results for battery endurance and charge times. I've found it necessary to link back to this discussion and report many times:
http://www.subsim.com/radioroom/show...ry+charge+time
It's the people running mods who have poor fuel endurance test results due to tweaks that try to lower the boat in the water to reduce wave riding artifacts. This technique causes the game engine to detect increased water resistance and decrease the range and surface speed.
Result: The stock game accurately depicts correct, historical fuel range, battery endurance and recharge times when historical techniques are applied to game playing style. In WWII, fuel was life and captains horded it like their own blood, saving every drop of reserve for aggressive attacks.
My advice to use 1/3 speed for charging was not for the purpose of increasing range but to decrease charging time while keeping your boat in an aggressive profile. You can dive quicker, evade quicker, turn faster, accelerate to full speed faster if your boat is already moving (not to mention you get to your patrol area faster, thereby increasing your kill score between port stops.)
-Pv-