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Ampere Time 12V 300Ah, 3840Wh LiFePO4 Battery with 4000+ Discharge Cycles & Built in 200A BMS

$1,249.99 $1,169.99SAVE 6%

Free shipping, tax (vary by region) and discount codes calculated at checkout


  • Reliable Automotive Grade Lithium Battery: Ampere Time LiFePO4 batteries have exceptional quality since they are manufactured by Automotive Grade LiFePO4 Cells with higher energy density, more stable performance & greater power. Highest-level safety based on UL Testing Certificate for the cell inside the battery and built-in BMS to protect it from overcharge, over-discharge, over current, and short circuit with excellent self-discharge rate. 100% safe, nontoxic, renewable energy. 
  • More Usable Capacity & Top-Flight Performance: A full charge on the battery can run common appliances for consecutive days, like running an 80W refrigerator nonstop for 48hrs ( about 2-4 days ). Our LiFePO4 battery has a great 300Ah capacity with a low self-discharge rate and low capacity loss, which is 40% more powerful than the same size lead-acid battery (The Depth of Discharge of lead-acid battery is about 60%). With efficient charging and easy installation, you will like it!
  • Perfect for Off-Grid & Outdoors Application: Our LiFePO4 Battery can be connected in parallels and series for larger capacity (Max 1200Ah ) and higher voltage (24V, 36V, 48V), which makes it perfect for off-grid solar systems and outdoors applications such as home backup power, RV, camping, sailboat, etc. You don’t have to worry about not being able to charge the battery on cloudy days as the long endurance of the battery will bring you reliable power or a longer and more enjoyable trip.
  • 1/3 Lightweight & 4000+ Cycles: Ampere Time LiFePO4 Battery is smaller and 1/3 the weight of the lead-acid battery at the same capacity, which is convenient for you to remove and place. Meanwhile, Our rechargeable battery provides 4000+ cycles (10 times longer) & a 10-year lifetime compared to 200-500 cycles & a 3-year lifetime in lead-acid battery. 2000-3000 cycles longer than other LiFePO4 battery on the market.
  • Fast Delivery & Outstanding Service: We are committed to providing you with satisfactory service. Fast delivery because the battery will be shipped from our local warehouse in Los Angeles, California or Dallas, Texas. Professional technical support and customer service as we provide easy-to-understand operation manuals and online services with quick feedback within 24 hours. If you have any questions, please feel free to contact us, we will do our best to meet your needs.


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Never Have to Worry About Running Out of Power

“Ampere Time 12V 300Ah LiFePO4 battery provides you adquate power, imagine that you warm up burritos in the microwave then crisp them in the toaster while watching TV without even a single concern.”

We Have Plenty of Power for All Major Appliance

We have plenty of power for refrigerator, and all major appliances including a hair dryer, coffee maker and convection oven.

Strong Output Meets Your Colorful Life

Up to 61.44kWh Energy Expansion

Ampere Time 12V 300Ah Lithium batteries support up to Max 4S4P connections to get more energy up to 40.96kWh.

S:Series; P: Parallel
Different scenarios require different battery systems, please consult the Ampere Time service team(service@amperetime.com) for a customized system solution.

Great Battery for Full Time Off Grid Living!

It is Built Top-notch and Compact

Built-in 200A BMS: Protect from overcharge, over-discharge, overcurrent, and short circuit with excellent self-discharge rate.

Grade A LiFePO4 Cells: Highest-level safety based on UL Testing Certificate for the cell inside the battery, with higher energy density, more stable performance & greater power.

IP65 Protection Class: Made with quality ABS plastic, has a wide range of operating temp: Charge: 0°C to 50°C(32°F to 122°F); Discharge: -20°C to 60°C(-4°F to 140°F), IP65 level waterproof set you free from worrying to install indoors or outdoors.

*NOTE: Do not charge below 0℃; Do not use as a starter battery.

3 Recommend Charging Ways

A variety of charging modes, let you easily enjoy green energy

Born for Long-term Electricity Supply

What's Inside the Box?

Never Have to Worry About Running Out of Power

“Ampere Time 12V 300Ah LiFePO4 battery provides you adquate power, imagine that you warm up burritos in the microwave then crisp them in the toaster while watching TV without even a single concern.”

We Have Plenty of Power for All Major Appliance

We have plenty of power for refrigerator, and all major appliances including a hair dryer, coffee maker and convection oven.

Strong Output Meets Your Colorful Life

Up to 61.44kWh Energy Expansion

Ampere Time 12V 300Ah Lithium batteries support up to Max 4S4P connections to get more energy up to 40.96kWh.

S:Series; P: Parallel
Different scenarios require different battery systems, please consult the Ampere Time service team(service@amperetime.com) for a customized system solution.

Great Battery for Full Time Off Grid Living!

It is Built Top-notch and Compact

Built-in 200A BMS: Protect from overcharge, over-discharge, overcurrent, and short circuit with excellent self-discharge rate.

Grade A LiFePO4 Cells: Highest-level safety based on UL Testing Certificate for the cell inside the battery, with higher energy density, more stable performance & greater power.

IP65 Protection Class: Made with quality ABS plastic, has a wide range of operating temp: Charge: 0°C to 50°C(32°F to 122°F); Discharge: -20°C to 60°C(-4°F to 140°F), IP65 level waterproof set you free from worrying to install indoors or outdoors.

*NOTE: Do not charge below 0℃; Do not use as a starter battery.

3 Recommend Charging Ways

A variety of charging modes, let you easily enjoy green energy

Born for Long-term Electricity Supply

What's Inside the Box?

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Ampere Time 12V 300Ah, 3840Wh LiFePO4 Battery with 4000+ Discharge Cycles & Built in 200A BMS

$1,249.99 $1,169.99