Summary

This case for MG328 3.7v battery version.
I 'd used designspark mechenical to design.

you'd need M3 bolt 8-12mm X4 to assembly.
P.S. I recommend to download MG328AA_TopNoNeedSupport_case2.stl.

Print Settings

Printer:

Kossel mini

                                            <p class="detail-setting rafts"><strong>Rafts: </strong>                     <div><p>Doesn't Matter</p></div></p>                                                                                <p class="detail-setting supports"><strong>Supports: </strong>                     <div><p>Doesn't Matter</p></div></p>                                                                                <p class="detail-setting resolution"><strong>Resolution: </strong>                     <div><p>0.3</p></div></p>                                                                                <p class="detail-setting infill"><strong>Infill: </strong>                     <div><p>15</p></div></p>

Post-Printing

            <p class="detail-caption"><strong>MG328AA_TopNoNeedSupport_case2.stl</strong></p>                <p class="detail-image"><img src="https://thingiverse-production-new.s3.amazonaws.com/assets/92/22/ca/e5/5c/20151116_014703.jpg"></p>            <p class="detail-caption"><strong>MG328AA_Top_case1.stl</strong></p>

MG328 DIY ESR Meter