Amazon.com : Grin Technologies Triple Bob Ebike Battery Anchor Bracket Mount for Secure Mounting of Downtube Batteries - Mounts Anywhere on The Tubes. : Sports & Outdoors
HOW TO MOUNT A DOWNTUBE BATTERY ON A FRAME THAT IS TOO SMALL – Electrify Bike
345mm Downtube Battery Base Mount Plate Bracket Fixed for electric Bicycle Ebike | eBay
ICE Configured Battery Mount - Rigid Rear – T-Cycle
HOW TO MOUNT A DOWNTUBE BATTERY ON A FRAME THAT IS TOO SMALL – Electrify Bike
Battery Mounting on Down Tube-Giant Anthem - Electricbike.com Ebike Forum
HOW TO MOUNT A DOWNTUBE BATTERY ON A FRAME THAT IS TOO SMALL – Electrify Bike
How to properly mount a Shark/Dolphin Pack under your downtube (with lots of pictures). : r/ebikes