{"product_id":"bei-maximus-ul-20a-battery-95s4p-366-7v-84-4ah-high-energy-battery-pack","title":"BEI Maximus UL 20A Battery | 95S4P 366.7V 84.4Ah High-Energy Battery Pack","description":"\u003cp class=\"p1\"\u003eThe \u003cspan class=\"s1\"\u003e\u003cb\u003eBEI Maximus UL 20A 95S4P Battery Pack\u003c\/b\u003e\u003c\/span\u003e is an ultra-high-energy, high-voltage battery system designed for advanced aerospace platforms, electric aircraft, UAVs, robotics, and other weight-critical applications requiring substantial energy storage with high specific energy.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eBuilt using \u003cspan class=\"s1\"\u003e\u003cb\u003e380 BEI Maximus UL 20A lithium-metal cells\u003c\/b\u003e\u003c\/span\u003e, the 95S4P architecture provides a \u003cspan class=\"s1\"\u003e\u003cb\u003e366.7 V nominal system voltage\u003c\/b\u003e\u003c\/span\u003e, up to \u003cspan class=\"s1\"\u003e\u003cb\u003e84.4 Ah typical capacity\u003c\/b\u003e\u003c\/span\u003e, and approximately \u003cspan class=\"s1\"\u003e\u003cb\u003e30.95 kWh of typical stored energy\u003c\/b\u003e\u003c\/span\u003e.\u003cbr\u003e\u003cbr\u003e\u003cmeta charset=\"utf-8\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/0202\/8714\/files\/BEI_Maximus_UL_20A_Datasheet.pdf?v=1788284116\" rel=\"noopener\" target=\"_blank\"\u003eCell Datasheet\u003c\/a\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eBEI’s Maximus UL 20A cell provides a \u003cspan class=\"s1\"\u003e\u003cb\u003e519 Wh\/kg cell-level gravimetric energy density\u003c\/b\u003e\u003c\/span\u003e, alongside high discharge capability and operation at temperatures down to −35°C.\u003c\/p\u003e\n\u003cp class=\"p2\"\u003eBEI Maximus UL 20A Datasheet.pdf\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 95S4P\u003cbr\u003e\u003c\/span\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eCell Count:\u003c\/b\u003e\u003c\/span\u003e\u003cspan class=\"s2\"\u003e 380\u003cbr\u003e\u003c\/span\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eNominal Voltage:\u003c\/b\u003e\u003c\/span\u003e\u003cspan class=\"s2\"\u003e \u003c\/span\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003e366.7 V\u003c\/b\u003e\u003c\/span\u003e\u003cspan class=\"s2\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eMaximum Charge Voltage:\u003c\/b\u003e\u003c\/span\u003e\u003cspan class=\"s2\"\u003e \u003c\/span\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003e408.5 V\u003c\/b\u003e\u003c\/span\u003e\u003cspan class=\"s2\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eDischarge Cutoff Voltage:\u003c\/b\u003e\u003c\/span\u003e\u003cspan class=\"s2\"\u003e \u003c\/span\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003e285.0 V\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eCapacity\u003c\/b\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"p3\"\u003eTypical: \u003cspan class=\"s1\"\u003e\u003cb\u003e84.4 Ah\u003c\/b\u003e\u003c\/span\u003e\u003cspan class=\"s2\"\u003e @ 0.1C\u003cbr\u003eMinimum: \u003c\/span\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003e80.0 Ah\u003c\/b\u003e\u003c\/span\u003e\u003cspan class=\"s2\"\u003e @ 0.1C\u003cbr\u003eRated: \u003c\/span\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003e78.4 Ah\u003c\/b\u003e\u003c\/span\u003e\u003cspan class=\"s2\"\u003e @ 1C\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eEnergy\u003c\/b\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"p3\"\u003eTypical: \u003cspan class=\"s1\"\u003e\u003cb\u003e30.95 kWh\u003c\/b\u003e\u003c\/span\u003e\u003cspan class=\"s2\"\u003e @ 0.1C\u003cbr\u003eMinimum: \u003c\/span\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003e29.34 kWh\u003c\/b\u003e\u003c\/span\u003e\u003cspan class=\"s2\"\u003e @ 0.1C\u003cbr\u003eRated: \u003c\/span\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003e28.58 kWh\u003c\/b\u003e\u003c\/span\u003e\u003cspan class=\"s2\"\u003e @ 1C\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eCharge Current\u003c\/b\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"p3\"\u003eStandard: \u003cspan class=\"s1\"\u003e\u003cb\u003e16 A (0.2C)\u003c\/b\u003e\u003c\/span\u003e\u003cspan class=\"s2\"\u003e\u003cbr\u003eMaximum: \u003c\/span\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003e80 A (1C)\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eDischarge Current\u003c\/b\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"p1\"\u003eStandard: \u003cspan class=\"s1\"\u003e\u003cb\u003e80 A (1C)\u003c\/b\u003e\u003c\/span\u003e\u003cbr\u003eMaximum Continuous: \u003cspan class=\"s1\"\u003e\u003cb\u003e400 A (5C)\u003c\/b\u003e\u003c\/span\u003e\u003cbr\u003eMaximum Continuous @ −20°C: \u003cspan class=\"s1\"\u003e\u003cb\u003e640 A (8C)\u003c\/b\u003e\u003c\/span\u003e\u003cbr\u003eMaximum Discharge ≤300 sec: \u003cspan class=\"s1\"\u003e\u003cb\u003e800 A (10C)\u003c\/b\u003e\u003c\/span\u003e\u003cbr\u003eMaximum Pulse ≤10 sec: \u003cspan class=\"s1\"\u003e\u003cb\u003eTBD by BEI\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p3\"\u003e\u003ci\u003eFinal pack-level current capability is dependent on busbar design, interconnects, thermal management, BMS architecture, contactors, cabling, connectors, and overall system design.\u003c\/i\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eInternal Resistance\u003c\/b\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"p1\"\u003eCell ACIR: \u003cspan class=\"s1\"\u003e\u003cb\u003e≤1.6 mΩ\u003c\/b\u003e\u003c\/span\u003e @ 1 kHz, 30% SOC\u003cbr\u003eCell DCIR: \u003cspan class=\"s1\"\u003e\u003cb\u003e≤4.0 mΩ\u003c\/b\u003e\u003c\/span\u003e @ 30% SOC\u003c\/p\u003e\n\u003cp class=\"p3\"\u003e\u003ci\u003ePack-level resistance is dependent on the complete electrical architecture and interconnection system.\u003c\/i\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 (380 cells):\u003c\/b\u003e\u003c\/span\u003e \u003cspan class=\"s1\"\u003e\u003cb\u003e~59.66 kg\u003c\/b\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eFinished Pack Weight:\u003c\/b\u003e\u003c\/span\u003e Dependent on mechanical structure, BMS, busbars, contactors, wiring, thermal management, 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 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. High-voltage systems can be engineered with custom mechanical architecture, BMS integration, contactors, service disconnects, communication interfaces, thermal management, and application-specific electrical integration.\u003c\/p\u003e\n\u003cp class=\"p4\"\u003eFor full technical documentation, integration support, or custom high-voltage battery configurations, please contact our team.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp class=\"p4\"\u003e \u003c\/p\u003e","brand":"BEI","offers":[{"title":"Default Title","offer_id":49175992697002,"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-battery-95s4p-366-7v-84-4ah-high-energy-battery-pack","provider":"Zero Point Energy Labs","version":"1.0","type":"link"}