Lithium LiFePO4 Car Battery Auto Battery, 12V 40Ah, 660CCA, 100RC Deep Cycle Start and Stop Car Batteries, IP66 Waterproof, H5 H6 H7 Automotive Replacement Battery for Cars, Trucks
Condition: New
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Availability:
16 left in stock
Arrives
Aug 9 – Aug 11
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Features
- Tip: To Extend The Service Life Of The Battery, We Recommend That You Fully Charge It Before The First Use. This car battery is suitable for vehicles with an engine displacement below 2.0L. If you are unsure whether this car battery is compatible with your vehicle model, please contact us for assistance.
- Compact Size&Strong PowerOur 12V 40Ah start-stop car battery measures 9.5x6.9x8in and weighs 14.8 pounds. IP66 waterproof ensures you to use lithium batteries anywhere safely. This car battery originally had threaded terminals. For compatibility with more vehicle models, we've added M8 screws to the battery pack. You can install an M8 screw on the negative terminal. The screw height is 30mm(1.18in)when installed, it will increase the total battery height to 9.18in. Please verify this dimension fits your vehicle.
- Good Replacement for Lead-acid BatteryThe lithium car battery is the good replacement to lead-acid batteries. It has a longer service life, deeper cycle times, higher energy density and is maintenance-free. This auto battery is equipped with a BMS protection, which can better protect automotive battery to prevent over charge, over discharge, over load, over voltage, over current, over heating and short circuit,ensure the health of the battery.
- Excellent Performance of LiFePO4 Automotive BatteryThe 12V 40Ah automotive replacement batteries feature 100RC and 660CCA performance, ensuring immediate ignition even in extreme temperatures. Charge:32F-113F(0C-45C) Discharge: -40F-140F(-20C-60C) Storage: 32F-113F(0C-45C). Our car batteries are equipped with a battery heating process. When the temperature is extremely low, the BMS will warm up the battery to ensure its discharge performance at low temperatures and extend its service life.
- NO Heavy Metals&Strong StabilityOur auto battery products do not contain any lead, chromium heavy metals, it has higher energy efficiency, longer service life and also reduce CO2 emissions. This is very helpful for the improvement of the environment.
- Emergency Battery Restartlf the battery is fully drained and won't turn on, you can press the white button to force-activate it in emergencies.
- Professional After-sales ServiceWe are professional lithium battery manufacturer, we have a large R&D department and after-sales service team, if you have any questions, we can provide you with technical support and rapid response of after-sales service.
Brand: ECIENWELL
Vehicle Service Type: Passenger Car
Terminal: M8 Terminal
Automotive Fit Type: Universal Fit
Manufacturer: ECIENWELL
Compatible with Vehicle Type: Passenger Car
Terminal: M8 Terminal
Automotive Fit Type: Universal Fit
Brand Name: ECIENWELL
Manufacturer Part Number: ECW1240N
Model Number: ECW1240N
Manufacturer: ECIENWELL
Included Components: 12V 40Ah Lithium Battery
Manufacturer Warranty Description: Technical Support
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Aug 9 – Aug 11
This item is non-returnable:
Non-returnable. Transportation of this item is subject to hazardous materials regulation
View our full returns policy here.
Non-returnable. Transportation of this item is subject to hazardous materials regulation
View our full returns policy here.
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Top Amazon Reviews
Strong started battery
Reviewed in the United States on July 18, 2026 by Ml z
Really happy with this battery. There's a slight flash that is really cool as the BMS starts to charge. The charge draw is perfectly controlled by the BMS and the alternator is not overwhelmed like a normal lithium battery. It spins the engine over fast with lots of power. Thank you for making a BMS that can start a car and not burn up the alternator too. 5 stars on this car specific lithium battery.
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Reviewed in the United States on February 17, 2026 by PrAiSeN SaTaN
Perfect for any relatively small engine that needs to start, that will never be run in freezing weather, like a boat. Comes with a nice booklet, well written. Could have come with the 2 bolts for connecting the wire fittings, but I had to take trip to the hardware store, just for 2 bolts and washers. One star off for this...
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Reviewed in the United States on May 30, 2026 by Gregory D.
Great battery Installed it in a 1990 Mazda Miata Works great starts every time
Reviewed in the United States on April 7, 2026 by Erika Madsen
This item is not for my F150 truck. Need to return it
Reviewed in the United States on March 7, 2026 by Carl Overton
Yeah this battery works good. I like it. It starts up the car and it has LONG BATTERY LIFE do not have to worry about finding somebody to jump my car.
Reviewed in the United States on February 8, 2026 by tat-2whatever
This car lithium battery is lighter than lead-acid batteries, very suitable for my car
Reviewed in the United States on December 8, 2025 by Beatriz A Becerra