Double your HD170 recording time, without swapping out batteries, with this 1700mAh long life lithium battery, from Drift Innovation. Providing 4 hours of non stop video capturing power, the Long LIfe battery can be used in place of the standard 1100mAh battery. In order for the Long Life battery to fit within the Drift HD170, you will have to remove the retainer clip within the battery compartment to accommodate the larger battery. Get more out of your HD170 and back yourself with 2 times the battery life.