There are a lot of mobile phones on the market today, but it can be impossible to find accessories designed for your particular device if you donβt have an Apple or Samsung product. Β Mugen Power has an extended Li-ion battery for your phone, if you happen to have theΒ Caterpillar Cat B15Q phone. Β The standard battery in the Cat B15Q is 2000mAh, but the 4100mAh Extended Battery for Caterpillar B15Q with Battery Door will give you twice that power. Β This battery will shipΒ on November 21, 2014. Β Itβs $89.50 and can be ordered now from Mugen Power.