{"product_id":"2021-bmw-840i-xdrive-gran-coupe-car-battery-bci-group-49-h8-lithium-lifepo4-automotive-battery","title":"PowerTex 2021 BMW 840i xDrive Gran Coupe Car Battery BCI Group 49 \/ H8 Replacement Lithium LiFePO4 Automotive Battery - PTLG49-361","description":"\u003ch2\u003ePowerTex 2021 BMW 840i xDrive Gran Coupe Car Battery BCI Group 49 \/ H8 Replacement Lithium LiFePO4 Automotive Battery - PTLG49-361\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eIntroducing PowerTex LiFePO4 BCI Group 49\/H8 Battery - Unleash the Power of Performance and Reliability!\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eMaximized Longevity:\u003c\/strong\u003e Elevate your driving experience with the Powertex Lithium Iron Phosphate car battery, an optimal solution for maximizing your vehicle's potential. Crafted for extended durability surpassing conventional car batteries, this powerhouse delivers enhanced power and prolonged longevity. With LiFePO4, revel in sustained performance and unwavering reliability that elevates your journey every mile of the way.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eOptimized Performance:\u003c\/strong\u003e Elevate your driving experience with the Powertex Lithium car battery, meticulously crafted for enhanced performance and dependability. This battery offers increased power and an extended lifespan, making it the ideal selection for those aiming to optimize their vehicle's capabilities. Choose Lithium Iron Phosphate for improved and consistently reliable performance.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eJump Start Button:\u003c\/strong\u003e Never worry about external jump starting again! Our battery features an internal jump start button, activated in the event of battery discharge or BMS triggering, ensuring hassle-free operations wherever you go.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eBattery Management System: \u003c\/strong\u003eExperience peace of mind with our cutting-edge Battery Management System (BMS), acting as a vigilant protector against overcharge, over-discharge, and short-circuit incidents. This intelligent system tirelessly monitors and controls battery performance, ensuring both your safety and the durability of your investment.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eGrade A Cells:\u003c\/strong\u003e Trust in the highest quality and reliability with UL-certified Grade A cells, delivering unmatched performance and peace of mind.\u003cbr\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv\u003eDiscover the unparalleled performance of our Powertex LiFePO4 Car Battery with transparent and comprehensive insights into key parameters:\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eCapacity:\u003c\/strong\u003e Unmatched energy storage capacity to fuel extended journeys and power-hungry applications.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eCycle Life:\u003c\/strong\u003e Exceptional longevity, ensuring a prolonged and reliable service life for your investment.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eCharging Time:\u003c\/strong\u003e Swift and efficient charging capabilities, minimizing downtime and maximizing your driving experience.\u003cbr\u003e\u003cbr\u003eAt Powertex, we prioritize clarity and excellence, empowering customers with the information they need to make informed decisions and elevate their driving experience.\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003eConcerned About The Safety of Powertex LiFePO4 Car Batteries?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv\u003eAfter undergoing rigorous testing, we've engineered the most efficient and secure battery solution. Our LiFePO4 battery utilizes cells that have undergone puncture testing to prevent potential fire and explosion hazards. With crush-resistant technology, it's built to withstand intense pressure, collisions, and maintain structural integrity, ensuring your safety in any situation. Additionally, boasting IP65 and IP67 waterproof ratings, it offers unparalleled protection against water damage. Certified with UN38.3, MSDS, 62133, 62619, and CE, our battery is a testament to its reliability and safety standards, providing you with peace of mind on every journey.\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch5\u003eWhat our Experts Think\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli data-start=\"32\" data-end=\"325\"\u003e\n\u003cp data-start=\"34\" data-end=\"325\"\u003e\u003cstrong data-start=\"34\" data-end=\"66\"\u003ePremium LiFePO₄ Performance:\u003c\/strong\u003e Uses advanced \u003cstrong data-start=\"81\" data-end=\"117\"\u003elithium‑iron‑phosphate (LiFePO₄)\u003c\/strong\u003e technology for stable power delivery, \u003cstrong data-start=\"156\" data-end=\"175\"\u003elonger lifespan\u003c\/strong\u003e, and superior durability compared with traditional lead‑acid batteries — perfect for high‑end automotive use. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"326\" data-end=\"555\"\u003e\n\u003cp data-start=\"328\" data-end=\"555\"\u003e\u003cstrong data-start=\"328\" data-end=\"369\"\u003eBCI Group 49 \/ H8 Direct Replacement:\u003c\/strong\u003e Engineered to match \u003cstrong data-start=\"390\" data-end=\"407\"\u003eGroup 49 \/ H8\u003c\/strong\u003e size and specs — straightforward drop‑in fit for the 2021 BMW 840i xDrive Gran Coupe with no modifications. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"556\" data-end=\"780\"\u003e\n\u003cp data-start=\"558\" data-end=\"780\"\u003e\u003cstrong data-start=\"558\" data-end=\"586\"\u003eLightweight \u0026amp; Efficient:\u003c\/strong\u003e Weighs around \u003cstrong data-start=\"601\" data-end=\"612\"\u003e19.8 lb\u003c\/strong\u003e, shedding significant weight versus conventional batteries — helps reduce vehicle mass and can improve handling and efficiency. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"781\" data-end=\"973\"\u003e\n\u003cp data-start=\"783\" data-end=\"973\"\u003e\u003cstrong data-start=\"783\" data-end=\"809\"\u003eStrong Cranking Power:\u003c\/strong\u003e High \u003cstrong data-start=\"815\" data-end=\"832\"\u003ecranking amps\u003c\/strong\u003e ensure dependable starts, even under demanding conditions, supporting smooth performance every time. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"974\" data-end=\"1196\"\u003e\n\u003cp data-start=\"976\" data-end=\"1196\"\u003e\u003cstrong data-start=\"976\" data-end=\"1009\"\u003eBuilt‑In Safety \u0026amp; Protection:\u003c\/strong\u003e Fully integrated \u003cstrong data-start=\"1027\" data-end=\"1062\"\u003eBattery Management System (BMS)\u003c\/strong\u003e guards against overcharge, overdischarge, and short circuits for reliable and safe operation. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1197\" data-end=\"1394\"\u003e\n\u003cp data-start=\"1199\" data-end=\"1394\"\u003e\u003cstrong data-start=\"1199\" data-end=\"1223\"\u003eConvenient Features:\u003c\/strong\u003e Integrated jump‑start capability and optional Bluetooth monitoring deliver added usability and real‑time battery insights via app.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003e\n\u003cbr\u003eQ\u0026amp;A\u003c\/h5\u003e\n\u003cp data-start=\"389\" data-end=\"674\"\u003e\u003cstrong data-start=\"389\" data-end=\"438\"\u003eQ: What vehicle is this battery designed for?\u003c\/strong\u003e\u003cbr data-start=\"438\" data-end=\"441\"\u003e\u003cstrong data-start=\"441\" data-end=\"447\"\u003eA:\u003c\/strong\u003e A \u003cstrong data-start=\"450\" data-end=\"514\"\u003eBCI Group 49 \/ H8 premium lithium LiFePO₄ automotive battery\u003c\/strong\u003e built as a replacement for the \u003cstrong data-start=\"546\" data-end=\"581\"\u003e2021 BMW 840i xDrive Gran Coupe\u003c\/strong\u003e and other compatible models requiring Group 49 sizing. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"676\" data-end=\"969\"\u003e\u003cstrong data-start=\"676\" data-end=\"721\"\u003eQ: What battery technology does this use?\u003c\/strong\u003e\u003cbr data-start=\"721\" data-end=\"724\"\u003e\u003cstrong data-start=\"724\" data-end=\"730\"\u003eA:\u003c\/strong\u003e Advanced \u003cstrong data-start=\"740\" data-end=\"776\"\u003eLithium Iron Phosphate (LiFePO₄)\u003c\/strong\u003e chemistry — significantly \u003cstrong data-start=\"803\" data-end=\"831\"\u003elighter and more durable\u003c\/strong\u003e than traditional lead‑acid batteries, with up to ~30 lbs weight savings and long lifespan benefits. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"971\" data-end=\"1235\"\u003e\u003cstrong data-start=\"971\" data-end=\"1010\"\u003eQ: What are the key specifications?\u003c\/strong\u003e\u003cbr data-start=\"1010\" data-end=\"1013\"\u003e\u003cstrong data-start=\"1013\" data-end=\"1019\"\u003eA:\u003c\/strong\u003e Standard \u003cstrong data-start=\"1029\" data-end=\"1050\"\u003eBCI Group 49 \/ H8\u003c\/strong\u003e form factor, \u003cstrong data-start=\"1064\" data-end=\"1074\"\u003e12.8 V\u003c\/strong\u003e output, \u003cstrong data-start=\"1083\" data-end=\"1102\"\u003e~60 Ah capacity\u003c\/strong\u003e, \u003cstrong data-start=\"1104\" data-end=\"1130\"\u003e~1500 CA cranking amps\u003c\/strong\u003e, \u003cstrong data-start=\"1132\" data-end=\"1145\"\u003e~1000 CCA\u003c\/strong\u003e, and compact dimensions (~14.0 × 6.9 × 7.4 inches). \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1237\" data-end=\"1502\"\u003e\u003cstrong data-start=\"1237\" data-end=\"1286\"\u003eQ: What performance advantages does it offer?\u003c\/strong\u003e\u003cbr data-start=\"1286\" data-end=\"1289\"\u003e\u003cstrong data-start=\"1289\" data-end=\"1295\"\u003eA:\u003c\/strong\u003e \u003cstrong data-start=\"1296\" data-end=\"1315\"\u003eReliable starts\u003c\/strong\u003e, \u003cstrong data-start=\"1317\" data-end=\"1348\"\u003econsistent voltage delivery\u003c\/strong\u003e, \u003cstrong data-start=\"1350\" data-end=\"1369\"\u003efaster charging\u003c\/strong\u003e, and \u003cstrong data-start=\"1375\" data-end=\"1400\"\u003eextended service life\u003c\/strong\u003e up to several times longer than conventional lead‑acid designs. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1504\" data-end=\"1773\"\u003e\u003cstrong data-start=\"1504\" data-end=\"1558\"\u003eQ: Does it include safety and monitoring features?\u003c\/strong\u003e\u003cbr data-start=\"1558\" data-end=\"1561\"\u003e\u003cstrong data-start=\"1561\" data-end=\"1567\"\u003eA:\u003c\/strong\u003e Yes — integrated \u003cstrong data-start=\"1585\" data-end=\"1620\"\u003eBattery Management System (BMS)\u003c\/strong\u003e protects against over‑charge, over‑discharge, short circuits, and improves overall battery safety and reliability. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1775\" data-end=\"1995\"\u003e\u003cstrong data-start=\"1775\" data-end=\"1817\"\u003eQ: Is it a direct drop‑in replacement?\u003c\/strong\u003e\u003cbr data-start=\"1817\" data-end=\"1820\"\u003e\u003cstrong data-start=\"1820\" data-end=\"1826\"\u003eA:\u003c\/strong\u003e Yes — made to match \u003cstrong data-start=\"1847\" data-end=\"1864\"\u003eGroup 49 \/ H8\u003c\/strong\u003e size and electrical specs for \u003cstrong data-start=\"1895\" data-end=\"1916\"\u003eeasy installation\u003c\/strong\u003e in vehicles that use this battery group. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1997\" data-end=\"2212\"\u003e\u003cstrong data-start=\"1997\" data-end=\"2028\"\u003eQ: Is maintenance required?\u003c\/strong\u003e\u003cbr data-start=\"2028\" data-end=\"2031\"\u003e\u003cstrong data-start=\"2031\" data-end=\"2037\"\u003eA:\u003c\/strong\u003e \u003cstrong data-start=\"2038\" data-end=\"2058\"\u003eMaintenance‑free\u003c\/strong\u003e operation typical of LiFePO₄ batteries; using a \u003cstrong data-start=\"2107\" data-end=\"2137\"\u003eLiFePO₄‑compatible charger\u003c\/strong\u003e is recommended to maximize lifespan. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"2214\" data-end=\"2533\"\u003e\u003cstrong data-start=\"2214\" data-end=\"2289\"\u003eQ: Why choose this PowerTex LiFePO₄ battery over traditional lead‑acid?\u003c\/strong\u003e\u003cbr data-start=\"2289\" data-end=\"2292\"\u003e\u003cstrong data-start=\"2292\" data-end=\"2298\"\u003eA:\u003c\/strong\u003e Provides \u003cstrong data-start=\"2308\" data-end=\"2328\"\u003eweight reduction\u003c\/strong\u003e, \u003cstrong data-start=\"2330\" data-end=\"2345\"\u003elonger life\u003c\/strong\u003e, \u003cstrong data-start=\"2347\" data-end=\"2377\"\u003eenhanced thermal stability\u003c\/strong\u003e, \u003cstrong data-start=\"2379\" data-end=\"2401\"\u003egreater efficiency\u003c\/strong\u003e, and \u003cstrong data-start=\"2407\" data-end=\"2439\"\u003eimproved overall performance\u003c\/strong\u003e, ideal for luxury performance vehicles like BMW models. \u003cspan class=\"\" data-state=\"delayed-open\" aria-describedby=\"radix-_r_mh_\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch5\u003e\n\u003cbr\u003eMaintenance Tips\u003c\/h5\u003e\n\u003cdiv class=\"flex flex-col text-sm pb-25\"\u003e\n\u003carticle class=\"text-token-text-primary w-full focus:outline-none [--shadow-height:45px] has-data-writing-block:pointer-events-none has-data-writing-block:-mt-(--shadow-height) has-data-writing-block:pt-(--shadow-height) [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" data-turn-id=\"request-69a2a348-c908-8324-8378-c23f57ac7a9f-0\" data-testid=\"conversation-turn-42\" data-scroll-anchor=\"true\" data-turn=\"assistant\" tabindex=\"-1\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-10 [--thread-content-margin:--spacing(4)] @w-sm\/main:[--thread-content-margin:--spacing(6)] @w-lg\/main:[--thread-content-margin:--spacing(16)] px-(--thread-content-margin)\"\u003e\n\u003cdiv class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\" tabindex=\"-1\"\u003e\n\u003cdiv class=\"flex max-w-full flex-col grow\"\u003e\n\u003cdiv data-message-author-role=\"assistant\" data-message-id=\"dcf5091e-cddc-4ca4-ac44-913fb9b0aece\" dir=\"auto\" data-message-model-slug=\"gpt-5-mini\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal [.text-message+\u0026amp;]:mt-1\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden first:pt-[1px]\"\u003e\n\u003cdiv class=\"markdown prose dark:prose-invert w-full wrap-break-word light markdown-new-styling\"\u003e\n\u003cul data-start=\"94\" data-end=\"1215\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e\n\u003cli data-start=\"94\" data-end=\"190\"\u003e\n\u003cp data-start=\"96\" data-end=\"190\"\u003e\u003cstrong data-start=\"96\" data-end=\"122\"\u003eCheck voltage monthly:\u003c\/strong\u003e Use a quality voltmeter to monitor the battery’s state of charge.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"191\" data-end=\"310\"\u003e\n\u003cp data-start=\"193\" data-end=\"310\"\u003e\u003cstrong data-start=\"193\" data-end=\"213\"\u003eClean terminals:\u003c\/strong\u003e Keep terminals and clamps free of corrosion; clean with a baking soda solution and soft brush.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"311\" data-end=\"420\"\u003e\n\u003cp data-start=\"313\" data-end=\"420\"\u003e\u003cstrong data-start=\"313\" data-end=\"333\"\u003eSecure mounting:\u003c\/strong\u003e Ensure the battery is firmly fastened to minimize vibration and extend service life.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"421\" data-end=\"558\"\u003e\n\u003cp data-start=\"423\" data-end=\"558\"\u003e\u003cstrong data-start=\"423\" data-end=\"460\"\u003eUse a LiFePO₄‑compatible charger:\u003c\/strong\u003e Recharge only with chargers designed for LiFePO₄ chemistry — avoid standard lead‑acid chargers.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"559\" data-end=\"670\"\u003e\n\u003cp data-start=\"561\" data-end=\"670\"\u003e\u003cstrong data-start=\"561\" data-end=\"586\"\u003eAvoid deep discharge:\u003c\/strong\u003e Recharge promptly after use; avoid letting voltage drop below recommended levels.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"671\" data-end=\"790\"\u003e\n\u003cp data-start=\"673\" data-end=\"790\"\u003e\u003cstrong data-start=\"673\" data-end=\"694\"\u003eTemperature care:\u003c\/strong\u003e Protect the battery from extreme heat or cold — LiFePO₄ performs best in moderate conditions.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"791\" data-end=\"898\"\u003e\n\u003cp data-start=\"793\" data-end=\"898\"\u003e\u003cstrong data-start=\"793\" data-end=\"815\"\u003eInspect regularly:\u003c\/strong\u003e Check for swelling, damage, or loose connections and address issues immediately.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"899\" data-end=\"1011\"\u003e\n\u003cp data-start=\"901\" data-end=\"1011\"\u003e\u003cstrong data-start=\"901\" data-end=\"935\"\u003eBalance charge if recommended:\u003c\/strong\u003e Perform balance charging per manufacturer guidance to keep cells healthy.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1012\" data-end=\"1117\"\u003e\n\u003cp data-start=\"1014\" data-end=\"1117\"\u003e\u003cstrong data-start=\"1014\" data-end=\"1031\"\u003eStorage care:\u003c\/strong\u003e For long storage, maintain ~50‑70% charge and disconnect to reduce parasitic drain.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1118\" data-end=\"1215\" data-is-last-node=\"\"\u003e\n\u003cp data-start=\"1120\" data-end=\"1215\" data-is-last-node=\"\"\u003e\u003cstrong data-start=\"1120\" data-end=\"1155\"\u003eFollow manufacturer guidelines:\u003c\/strong\u003e Adhere to PowerTex care, safety, and warranty instructions.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mt-3 w-full empty:hidden\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/article\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"PowerTex","offers":[{"title":"Default Title","offer_id":45448177418300,"sku":"PTLG49-361","price":674.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/6151\/5324\/files\/Powertex-Batteries-BCI-group-49-lithium-iron-phosphate-LiFePO4-automotive-car-battery-PTLG49_76a87015-00b3-430b-a46a-20252e6e88e3.jpg?v=1779942986","url":"https:\/\/e-powergo.com\/products\/2021-bmw-840i-xdrive-gran-coupe-car-battery-bci-group-49-h8-lithium-lifepo4-automotive-battery","provider":"Set Up Your Ultimate Retreat","version":"1.0","type":"link"}