PowerTex 2021 BMW 840i xDrive Gran Coupe Car Battery BCI Group 49 / H8 Replacement Lithium LiFePO4 Automotive Battery - PTLG49-361

Maximized Longevity: 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.

Optimized Performance: 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.

Jump Start Button: 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.

Battery Management System: Experience 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.

Grade A Cells: Trust in the highest quality and reliability with UL-certified Grade A cells, delivering unmatched performance and peace of mind.

Discover the unparalleled performance of our Powertex LiFePO4 Car Battery with transparent and comprehensive insights into key parameters:

Capacity: Unmatched energy storage capacity to fuel extended journeys and power-hungry applications.

Cycle Life: Exceptional longevity, ensuring a prolonged and reliable service life for your investment.

Charging Time: Swift and efficient charging capabilities, minimizing downtime and maximizing your driving experience.

At Powertex, we prioritize clarity and excellence, empowering customers with the information they need to make informed decisions and elevate their driving experience.

After 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.

What our Experts Think

• Premium LiFePO₄ Performance: Uses advanced lithium‑iron‑phosphate (LiFePO₄) technology for stable power delivery, longer lifespan, and superior durability compared with traditional lead‑acid batteries — perfect for high‑end automotive use.

• BCI Group 49 / H8 Direct Replacement: Engineered to match Group 49 / H8 size and specs — straightforward drop‑in fit for the 2021 BMW 840i xDrive Gran Coupe with no modifications.

• Lightweight & Efficient: Weighs around 19.8 lb, shedding significant weight versus conventional batteries — helps reduce vehicle mass and can improve handling and efficiency.

• Strong Cranking Power: High cranking amps ensure dependable starts, even under demanding conditions, supporting smooth performance every time.

• Built‑In Safety & Protection: Fully integrated Battery Management System (BMS) guards against overcharge, overdischarge, and short circuits for reliable and safe operation.

• Convenient Features: Integrated jump‑start capability and optional Bluetooth monitoring deliver added usability and real‑time battery insights via app.

Q&A

Q: What vehicle is this battery designed for?
A: A BCI Group 49 / H8 premium lithium LiFePO₄ automotive battery built as a replacement for the 2021 BMW 840i xDrive Gran Coupe and other compatible models requiring Group 49 sizing.

Q: What battery technology does this use?
A: Advanced Lithium Iron Phosphate (LiFePO₄) chemistry — significantly lighter and more durable than traditional lead‑acid batteries, with up to ~30 lbs weight savings and long lifespan benefits.

Q: What are the key specifications?
A: Standard BCI Group 49 / H8 form factor, 12.8 V output, ~60 Ah capacity, ~1500 CA cranking amps, ~1000 CCA, and compact dimensions (~14.0 × 6.9 × 7.4 inches).

Q: What performance advantages does it offer?
A: Reliable starts, consistent voltage delivery, faster charging, and extended service life up to several times longer than conventional lead‑acid designs.

Q: Does it include safety and monitoring features?
A: Yes — integrated Battery Management System (BMS) protects against over‑charge, over‑discharge, short circuits, and improves overall battery safety and reliability.

Q: Is it a direct drop‑in replacement?
A: Yes — made to match Group 49 / H8 size and electrical specs for easy installation in vehicles that use this battery group.

Q: Is maintenance required?
A: Maintenance‑free operation typical of LiFePO₄ batteries; using a LiFePO₄‑compatible charger is recommended to maximize lifespan.

Q: Why choose this PowerTex LiFePO₄ battery over traditional lead‑acid?
A: Provides weight reduction, longer life, enhanced thermal stability, greater efficiency, and improved overall performance, ideal for luxury performance vehicles like BMW models.

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