This barrel lock and key set is a practical replacement part for securing the battery on your Fatfish Biggie electric bike. The lock keeps the battery firmly attached to the frame, helping prevent theft and ensuring it stays in place while you ride.

Most riders replace this set if the original keys are lost or misplaced. It is also a useful upgrade if the lock has become worn, damaged, or difficult to turn. The pack includes a new barrel lock and matching keys so you can quickly restore security and convenience.

With a fresh lock and keys, you can remove your battery easily for charging or storage and keep it safely locked when on the bike.