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Build Battery Packs

Cells

    DIY500AMP.COM Order #1584 Estimated Thursday, Sep 25 Ampace JP40 "LT Wrap" 21700 4000mah 70A Battery - Tabless Cell × 120 Subtotal $474.00 Shipping $22.99 Total $496.99 USD

    Welder

      Heltec HT-SW02H Order #114-4340207-9060214 October 30, 2025 Spot Welder & Milliohm Meter 42 KW 7000A Capacitor Energy Storage Pulse Welding Machine Subtotal $729.90 Tax: $43.79 Total: $773.69

      Battery Case

        15 cell m18 kit $389.20

        Assembly

          video cell orientation 20260903_10h57m14s_grim.png bottom contacts 20260903_10h58m24s_grim.png top contacts 20260903_10h59m38s_grim.png side board 20260903_11h00m21s_grim.png soldering 4 contacts to the board 20260903_11h00m55s_grim.png obliterating this bit contact for some reason 20260903_11h02m14s_grim.png case with pastic bits and springs 20260903_11h04m02s_grim.png second plastic thing goes into the springs, then 4 tiny screws 20260903_11h04m30s_grim.png