How to tie dc accessory to higher voltage battery

I am installing a solar powered gate opener. I want to be able to open it with Bluetooth without running ac power to the unit. The Bluetooth operator has a 120v plug that adapts current to dc @ 3.2v 1.0 A. The gate has a solar panel which connects to a battery the numbers on which are 12v 7ah cycle use 14.4-14.7v standby use 13.3-13.8v. I am in need of some guidance of what I can install in line after I cut the ac plug off to get the right voltage to the operating unit. Your help is greatly appreciated. Thanks in advance.

by ptreads
June 06, 2019
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