which one is better

[Rockstar4007]

Battery wise, am I better using integrated nexus 7 speaker or bluetooth speaker. Just for game sound not listening to music

[QueenDemetria]

Battery wise, am I better using integrated nexus 7 speaker or bluetooth speaker. Just for game sound not listening to music

They will probably be the same, but if there is a difference it will probably be in the minutes(so nothing worth caring about).

[Aniallation]

Battery wise, am I better using integrated nexus 7 speaker or bluetooth speaker. Just for game sound not listening to music

Integrated speaker. Game sound doesn't take anywhere near as necessary as the quality of bluetooth speaker, and although battery life may be around the same whether using internal speakers or streaming over A2DP, it's more work to charge two devices instead of one.