What are some of the best batteries for a Garrett ATX? Shelby Richardson April 29, 2021 11:38 Updated Question: What are some of the best batteries for a Garrett ATX? Answer: Alkaline come installed and the rechargeable are alkaline 1.5 volt or 1.2 volt lithium batteries. Do not use 3.7 V it may damage machine. Relevant to: Garrett ATX Related articles How Deep Can the Garrett ATX Deepseeker Detect? Why Does My Garrett AT Max Have a Constant Tone When Turning on? Comments 0 comments Please sign in to leave a comment.