{"product_id":"4s1p-21700-tabless-drone-edf-jet-battery-pack-0-3mm-copper-high-performance","title":"4S1P 21700 Tabless Drone \/ EDF Jet Battery Pack - 0.3mm Copper High-Performance","description":"\u003ch2\u003e4S1P 21700 Tabless Drone \/ EDF Jet Battery Pack - 0.3mm Copper High-Performance\u003c\/h2\u003e\u003cp\u003eThis custom-built 4S1P lithium-ion battery pack is assembled in-house by DIY500AMP for drones, EDF jets, RC aircraft, and compact high-power projects where low resistance and clean construction matter.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eThis is not a basic Li-ion pack.\u003c\/strong\u003e Every option uses premium 21700 cells, 0.3mm T2 copper internal construction, and an in-house build focused on serious RC and drone use.\u003c\/p\u003e\u003ch3\u003eWhy This Pack Is Different\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelectable cell models:\u003c\/strong\u003e choose the model for your capacity and application requirements, and follow its manufacturer operating limits.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e0.3mm T2 copper current path:\u003c\/strong\u003e selected as the standard for maximum internal conductivity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuilt in-house in Florida:\u003c\/strong\u003e assembled, inspected, and supported by DIY500AMP.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eConfiguration\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries \/ Parallel:\u003c\/strong\u003e 4S1P (4 cells)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNominal voltage estimate:\u003c\/strong\u003e 14.4V (using a 3.6V-per-cell calculation; the manufacturer's nominal voltage varies by cell model)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull charge voltage:\u003c\/strong\u003e 16.8V\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDischarge protection:\u003c\/strong\u003e Follow the selected cell manufacturer's data sheet and configure suitable BMS or controller protection for the pack. Monitor individual cell-group voltage; pack voltage alone does not establish a safe low-voltage cutoff.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterconnect:\u003c\/strong\u003e 0.3mm T2 copper\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput leads:\u003c\/strong\u003e 10 AWG or 12 AWG silicone wire\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCell Options and Estimated Energy\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eEVE 40PL \/ Ampace JP40:\u003c\/strong\u003e about 4Ah \/ 58Wh\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEVE 50PL \/ TENPOWER 50XG \/ Reliance RS50 \/ Ampace JP50P1:\u003c\/strong\u003e about 5Ah \/ 72Wh\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLinkData 55P:\u003c\/strong\u003e about 5.5Ah \/ 79Wh\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLinkData 65P:\u003c\/strong\u003e about 6.5Ah \/ 94Wh - top premium runtime option\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCable Gauge\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e12 AWG:\u003c\/strong\u003e lighter and more flexible.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e10 AWG:\u003c\/strong\u003e recommended for higher current demand and aggressive throttle.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eActual usable capacity depends on current draw, temperature, airflow, and cutoff voltage. Energy estimates use a 3.6V-per-cell calculation; actual energy varies by cell model and operating conditions.\u003c\/p\u003e\u003ch3\u003eProduction Time\u003c\/h3\u003e\u003cp\u003eThis is a custom-built pack. Build time depends on order volume, selected cell availability, and connector requirements.\u003c\/p\u003e\u003ch3\u003eSafety Warning\u003c\/h3\u003e\u003cp\u003eLithium-ion battery packs require proper handling, charging, storage, and protection. Do not short, puncture, crush, overcharge, over-discharge, expose to water, or expose to excessive heat. Use only with proper chargers and properly designed systems. 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