Posted December 22, 2015
Sarisio: It is also empyrically proven, that the more free RAM you have, the more life for battery. My phone loses 1-2% of charge over night when I shut down everything possible, and loses like 10%+ when I forget to do that and Android starts destroying RAM with services I never even use.
On a similar vain, dogs with hearing problems can't walk well, because they don't come to you when you call. The phone loses battery when more apps are running, because these apps use the CPU, not because of the amount of free RAM. If you had the same phone with more RAM, that won't cause the battery to lose less charge. (Likely the opposite, because keeping more RAM active takes more power.)
Googling, I couldn't find an official figure, but I did find that 512MB of heap has been tested as available on some devices, so clearly you're wrong.