The battery saver does have a few settings including an automatic activation threshold. (greenbot.com)
July 21st update: The 80 percent hash power activation threshold for BIP91 was reached today (UTC). (bitcoinmagazine.com)
Bitcoin Classic is an implementation of an alternative Bitcoin protocol that would cause a hard fork with a 75 percent activation threshold in order to increase the block size limit from 1 megabyte to 2 megabytes. (bitcoinmagazine.com)