{"product_id":"bei-maximus-ul-20a-drone-battery-6s2p-23-16v-21-1ah-high-performance-uav-pack","title":"BEI Maximus UL 20A Battery | 6S2P 23.16V 42.2Ah High-Energy Density UAV Pack","description":"\u003cp class=\"p1\"\u003eThe \u003cspan class=\"s1\"\u003e\u003cb\u003eBEI Maximus UL 20A 6S2P Battery Pack\u003c\/b\u003e\u003c\/span\u003e is an ultra-high-energy battery system designed for UAVs, aerospace platforms, robotics, and other weight-critical applications where maximizing stored energy while minimizing battery mass is essential.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eBuilt using BEI’s Maximus UL 20A lithium-metal cells, the pack combines a \u003cspan class=\"s1\"\u003e\u003cb\u003e519 Wh\/kg cell-level gravimetric energy density\u003c\/b\u003e\u003c\/span\u003e with high discharge capability and excellent low-temperature performance. The 6S2P configuration provides up to \u003cspan class=\"s1\"\u003e\u003cb\u003e42.2 Ah typical capacity and 977.8 Wh of energy\u003c\/b\u003e\u003c\/span\u003e, making it particularly well suited for long-endurance aircraft and high-energy aerospace applications.\u003c\/p\u003e\n\u003cp class=\"p2\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/0202\/8714\/files\/BEI_Maximus_UL_20A_Datasheet.pdf?v=1788284116\"\u003eCell Datasheet\u003c\/a\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eBEI specifies operation down to \u003cspan class=\"s1\"\u003e\u003cb\u003e−35°C\u003c\/b\u003e\u003c\/span\u003e, with the cells capable of up to \u003cspan class=\"s1\"\u003e\u003cb\u003e8C continuous discharge at −20°C\u003c\/b\u003e\u003c\/span\u003e. This combination of energy density, power capability, and low-temperature operation makes the Maximus UL platform particularly attractive for aircraft where battery mass directly affects endurance, payload capacity, and overall system performance.\u003c\/p\u003e\n\u003cp class=\"p3\"\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eTechnical Specifications\u003c\/b\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"p3\"\u003e\u003cb\u003eConfiguration:\u003c\/b\u003e\u003cspan class=\"s2\"\u003e 6S2P\u003cbr\u003e\u003c\/span\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eNominal Voltage:\u003c\/b\u003e\u003c\/span\u003e\u003cspan class=\"s2\"\u003e 23.16 V\u003cbr\u003e\u003c\/span\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eMaximum Charge Voltage:\u003c\/b\u003e\u003c\/span\u003e\u003cspan class=\"s2\"\u003e 25.8 V\u003cbr\u003e\u003c\/span\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eDischarge Cutoff Voltage:\u003c\/b\u003e\u003c\/span\u003e\u003cspan class=\"s2\"\u003e 18.0 V\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p3\"\u003e\u003cb\u003eCapacity\u003c\/b\u003e\u003cspan class=\"s2\"\u003e\u003cbr\u003eTypical: \u003c\/span\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003e42.2 Ah\u003c\/b\u003e\u003c\/span\u003e\u003cspan class=\"s2\"\u003e @ 0.1C\u003cbr\u003eMinimum: \u003c\/span\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003e40.0 Ah\u003c\/b\u003e\u003c\/span\u003e\u003cspan class=\"s2\"\u003e @ 0.1C\u003cbr\u003eRated: \u003c\/span\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003e39.2 Ah\u003c\/b\u003e\u003c\/span\u003e\u003cspan class=\"s2\"\u003e @ 1C\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p3\"\u003e\u003cb\u003eEnergy\u003c\/b\u003e\u003cspan class=\"s2\"\u003e\u003cbr\u003eTypical: \u003c\/span\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003e978 Wh\u003c\/b\u003e\u003c\/span\u003e\u003cspan class=\"s2\"\u003e @ 0.1C\u003cbr\u003eMinimum: \u003c\/span\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003e926 Wh\u003c\/b\u003e\u003c\/span\u003e\u003cspan class=\"s2\"\u003e @ 0.1C\u003cbr\u003eRated: \u003c\/span\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003e902 Wh\u003c\/b\u003e\u003c\/span\u003e\u003cspan class=\"s2\"\u003e @ 1C\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p3\"\u003e\u003cb\u003eCharge Current\u003c\/b\u003e\u003cspan class=\"s2\"\u003e\u003cbr\u003eStandard: \u003c\/span\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003e8 A (0.2C)\u003c\/b\u003e\u003c\/span\u003e\u003cspan class=\"s2\"\u003e\u003cbr\u003eMaximum: \u003c\/span\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003e40 A (1C)\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p3\"\u003e\u003cb\u003eDischarge Current\u003c\/b\u003e\u003cspan class=\"s2\"\u003e\u003cbr\u003eStandard: \u003c\/span\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003e40 A (1C)\u003c\/b\u003e\u003c\/span\u003e\u003cspan class=\"s2\"\u003e\u003cbr\u003eMaximum Continuous: \u003c\/span\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003e200 A (5C)\u003c\/b\u003e\u003c\/span\u003e\u003cspan class=\"s2\"\u003e\u003cbr\u003eMaximum Continuous @ −20°C: \u003c\/span\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003e320 A (8C)\u003c\/b\u003e\u003c\/span\u003e\u003cspan class=\"s2\"\u003e\u003cbr\u003eMaximum Discharge ≤300 sec: \u003c\/span\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003e400 A (10C)\u003c\/b\u003e\u003c\/span\u003e\u003cspan class=\"s2\"\u003e\u003cbr\u003eMaximum Pulse ≤10 sec: \u003c\/span\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eTBD by BEI\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p3\"\u003e\u003cb\u003eInternal Resistance\u003c\/b\u003e\u003cspan class=\"s2\"\u003e\u003cbr\u003eCell ACIR: \u003c\/span\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003e≤1.6 mΩ\u003c\/b\u003e\u003c\/span\u003e\u003cspan class=\"s2\"\u003e @ 1 kHz, 30% SOC\u003cbr\u003eCell DCIR: \u003c\/span\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003e≤4.0 mΩ\u003c\/b\u003e\u003c\/span\u003e\u003cspan class=\"s2\"\u003e @ 30% SOC\u003cbr\u003e\u003c\/span\u003e\u003cspan class=\"s1\"\u003e\u003ci\u003ePack-level resistance varies with interconnects, wiring, connectors, and final configuration.\u003c\/i\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eEnvironmental Specifications\u003c\/b\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"p3\"\u003e\u003cb\u003eCharge Temperature:\u003c\/b\u003e\u003cspan class=\"s2\"\u003e +10°C to +45°C\u003cbr\u003e\u003c\/span\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eDischarge Temperature:\u003c\/b\u003e\u003c\/span\u003e\u003cspan class=\"s2\"\u003e −35°C to +71°C\u003cbr\u003e\u003c\/span\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eStorage Temperature:\u003c\/b\u003e\u003c\/span\u003e\u003cspan class=\"s2\"\u003e 0°C to +45°C\u003cbr\u003e\u003c\/span\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eMaximum Cell Body Temperature:\u003c\/b\u003e\u003c\/span\u003e\u003cspan class=\"s2\"\u003e 90°C\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eMechanical Specifications\u003c\/b\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eCell Weight:\u003c\/b\u003e 157 g each\u003cbr\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eCell-Level Mass (12 cells):\u003c\/b\u003e\u003c\/span\u003e ~1.88 kg\u003cbr\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eFinished Pack Weight:\u003c\/b\u003e\u003c\/span\u003e Dependent on final construction, wiring, connector, protection, and enclosure requirements\u003c\/p\u003e\n\u003ch3\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eCell Performance\u003c\/b\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"p3\"\u003e\u003cb\u003eCell-Level Gravimetric Energy Density:\u003c\/b\u003e\u003cspan class=\"s2\"\u003e 519 Wh\/kg @ 0.1C\u003cbr\u003e\u003c\/span\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eCell-Level Volumetric Energy Density:\u003c\/b\u003e\u003c\/span\u003e\u003cspan class=\"s2\"\u003e 1,282 Wh\/L @ 0.1C\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eCycle Life:\u003c\/b\u003e\u003cbr\u003e70 cycles — 0.2C charge \/ 1C discharge, 100% DOD to 80% SOH\u003cbr\u003e30 cycles — 1C charge \/ 2C discharge, 100% DOD to 80% SOH\u003c\/p\u003e\n\u003cp class=\"p3\"\u003e\u003cb\u003eCell Certification:\u003c\/b\u003e\u003cspan class=\"s2\"\u003e UN 38.3 \u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p2\"\u003eBEI Maximus UL 20A Datasheet.pdf\u003c\/p\u003e\n\u003ch3\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eAvailability\u003c\/b\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eLead Time:\u003c\/b\u003e Approximately 1-3 weeks\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eBEI Maximus UL 20A cells are currently intended for \u003cspan class=\"s1\"\u003e\u003cb\u003etesting and evaluation applications\u003c\/b\u003e\u003c\/span\u003e, with availability subject to supply. Custom pack configurations, connectors, wiring, BMS integration, mechanical packaging, and system-level engineering are available through Zero Point Energy Labs.\u003c\/p\u003e","brand":"BEI","offers":[{"title":"Default Title","offer_id":49175332815018,"sku":null,"price":1690.28,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0652\/0202\/8714\/files\/6s2pP45B_a.png?v=1750525584","url":"https:\/\/zeropointenergylabs.com\/products\/bei-maximus-ul-20a-drone-battery-6s2p-23-16v-21-1ah-high-performance-uav-pack","provider":"Zero Point Energy Labs","version":"1.0","type":"link"}