Find any Amazon.com product's deals and best prices with our free Amazon deal finder and price tracker. Simply paste the product link (URL) or search by name in the box above. You'll get full product information, Deal Score, and all current deals. Shop smarter with the best Amazon deals finder in the USA.
x
Sorry, Something went wrong!
HumsiENK 12V 640Ah LiFePO4 Battery 4Pack, 8.19kWh, 250A BMS Lithium Battery
✅ In stock
F
Grade
Price verified Sep 22, 2026 2:08 AM · Prices & availability subject to change
Is This a Good Price on Amazon?
💤 Not a Deal- 💤Verdict: Not a Deal. Price is at or above historical norms. Best to wait for a sale.
- ➡️Pricing has held fairly steady, with no strong push in either direction.
How We Scored This Deal
Price Competitiveness
0/28
Recent Value
0/22
Market Standing
0/20
Deal Strength
0/20
Momentum
0/10
📝 Product Overview
🏪 Sold by
HumsiENK Store
🚚 Shipping
Free Shipping
Product Details
✓8.19kWh MONSTER CAPACITY & SPACE SAVER: Why wire six 100Ah batteries when you can have one? Delivering a massive 640Ah (8192Wh) capacity, this ultimate power beast weighs only 109.02 lbs and measures a sleek 24.92 x 8.58 x 9.53 inches. It eliminates the nightmare of complex parallel wiring and wasted space. Equipped with standard M8 terminals, it’s the perfect drop-in upgrade for tight RV compartments or off-grid solar setups
✓250A ROBUST BMS & 3200W OUTPUT: Power your heavy-duty appliances with zero hesitation. Upgraded with a heavy-duty 250A Battery Management System, this 12V lithium battery effortlessly handles up to 3200W of continuous output. Easily run your 15,000 BTU RV air conditioner, microwave, espresso machine, and fridge simultaneously without triggering BMS shut-offs. Pure, reliable deep cycle energy for your luxury boondocking experience
✓SMART BLUETOOTH & LOW-TEMP CUT-OFF: Total energy control at your fingertips. The built-in Bluetooth module syncs with the Humsienk APP, letting you monitor real-time voltage, capacity (SOC), and cell health. Engineered for extreme weather, it features a smart low-temperature cut-off that automatically stops charging below 32°F (0°C) to prevent cell damage, ensuring your LiFePO4 battery stays protected during harsh winter camping
✓MASSIVE EXPANSION FOR RV & MARINE: Ready to build the ultimate power wall? This 12V 640Ah battery supports massive expansion up to 4 in series and 4 in parallel (Max 4S4P), allowing you to create a staggering 51.2V 2560Ah (131kWh) energy storage system. It’s the elite, scalable solution for off-grid cabins, home backup power, yachts, and heavy-duty marine applications
✓10-YEAR LIFESPAN & 5-YEAR WARRANTY: Invest with absolute confidence. Utilizing EV-Grade A cells, it delivers 6000+ deep cycles and up to a 10-year service life—outperforming traditional lead-acid batteries by 10X. The smart BMS provides flawless protection against overcharge, short circuits, and extreme temperatures. Backed by elite safety certifications and a solid 5-year warranty, your investment is bulletproof
⚙️ Specifications
Brand
HumsiENK
Vehicle Service Type
RV, Motorhome, Travel Trailer, Camper, Marine, Boat, Yacht, Commercial Truck
Size
4 Pack
Voltage
12.8 volts
Battery Cell Composition
Lithium Ion
Item Weight
109 pounds
Product Dimensions
8.58"D x 24.92"W x 9.53"H
Terminal
M8 Terminal
Battery Capacity
640 amp_hours
Unit Count
4 Count
Compatible with Vehicle Type
RV, Motorhome, Travel Trailer, Camper, Marine, Boat, Yacht, Commercial Truck
