Built a sliding tray for my 3 batteries in the boat - The Hull Truth - Boating and Fishing Forum
Shore Station Hanging Battery Tray – Midwest Marine Supplies
Boat Battery Tray with Hold Down Strap for Standard 24 Series Batteries - White's Marine
Amazon.com: Automotive, Marine, Boat, RV Battery Tray - Group 27 Series With Strap, Battery Holder (27 Series) : Automotive
Amazon.com: T-H Marine Narrow Battery Tray Holder with Durable Poly Strap - Narrow Space Saving Design and Recessed Mounting Wells Fit Group 24 Batteries - Boat and RV : Automotive