{"product_id":"2s1p-21700-custom-built-pack-inquiry","title":"2S1P 21700 Custom-Built Copper + Stainless Steel Battery Pack","description":"\u003ch2\u003e2S1P 21700 Custom-Built Battery Pack\u003c\/h2\u003e\u003cp\u003eA custom-assembled 2S1P pack built from the corresponding DIY500AMP 21700 copper and stainless-steel busbar kit. The quoted build includes the selected 21700 cells, top and bottom cell holders, copper interconnects with a slotted stainless-steel welding layer, a JST balance lead, clear PVC cover, and printed orientation instructions.\u003c\/p\u003e\u003cp\u003eTwo 6-inch power leads are connected to the front terminal copper busbars; choose 12 AWG or 10 AWG after the application is reviewed. The output leads have bare ends; an output connector is not included.\u003c\/p\u003e\u003cp\u003eThe stainless-steel top layer provides a spot-weldable, corrosion-resistant contact surface. Copper thickness may vary from 0.2 to 0.3 mm by build option; the final gauge is confirmed in the quote. The centered slit in both metal layers is designed at 0.8 × 7 mm.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eEstimated pack body:\u003c\/strong\u003e 46.4 × 25.9 × 72 mm, excluding leads, balance connector, cover, cushioning, and shipping box.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eEstimated finished-pack mass:\u003c\/strong\u003e 164–210 g, depending on selected cell and lead gauge; engineering estimate, not a measured shipment weight.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eRendered example:\u003c\/strong\u003e The illustrations show the supplied holder family and proposed metal layout. Confirm the exact delivered parts and cell polarity before assembly.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCharging and protection:\u003c\/strong\u003e The JST balance connector is for use with a compatible smart charger only; it is not a battery management system (BMS). No BMS is included. Use suitable external protection, fusing, insulation, and thermal management for the chosen cells and application. Follow the selected cell manufacturer's data sheet for charging and operating limits.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQuote inquiry only:\u003c\/strong\u003e This page does not offer online checkout or promise shipping. Tell us the application, cell choice, lead gauge, and any required output connector. We will confirm the design, price, production time, availability, and shipping eligibility before payment.\u003c\/p\u003e","brand":"DIY500AMP.COM","offers":[{"title":"Default Title","offer_id":48943147024455,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0588\/8055\/7127\/files\/diy500amp-2s1p-21700-assembly-front-example-stainless_6c44f902-32e8-484f-b070-2b6ebcb0f8c6.png?v=1790211730","url":"https:\/\/diy500amp.com\/products\/2s1p-21700-custom-built-pack-inquiry","provider":"DIY500AMP.COM","version":"1.0","type":"link"}