Check out STANDARD BATTERY LIFEPO4 LITHIUM IRON PHOSPHATE RECHARGEABLE ION 3D model on CGTrader for $10. High-quality mesh by SURF3D: 3838 polys, 3717 vertices.
STL (Stereolithography, filesize: 187 KB), OBJ (OBJ, filesize: 297 KB), 3DM (Rhinoceros 3D, filesize: 1.36 MB), IGE (IGES, filesize: 1.06 MB), FBX (Autodesk FBX, filesize: 155 KB), GLTF (glTF, filesize: 142 KB), STP (STEP, filesize: 595 KB), BLEND (Blender, filesize: 904 KB), SKP (Sketchup, filesize: 307 KB), 3DS (3D Studio, filesize: 128 KB), DAE (Collada, filesize: 657 KB), MAX (Autodesk 3ds Max, filesize: 1.53 MB), DWG (AutoCAD, filesize: 731 KB), SAT (3D ACIS, filesize: 376 KB)