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Ampere Time 12V 50Ah, 640Wh LiFePO4 Battery with 4000+ Discharge Cycles & Built in 50A BMS

$289.99 $249.99SAVE 14%

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


  • Similar Usable Energy but 5 Times Faster Charging: Our 12V 50Ah lithium battery has 640Wh energy (12.8V×50Ah×100%DOD=640Wh ), which is close to the real energy of 12V 100Ah lead-acid battery (12V×100Ah×60%DOD=720Wh), as the depth of discharge (DOD) of lead-acid is about 60%. It means a 12V 100Ah lead-acid battery can run an 80W load nonstop for 9hrs while 8hrs as our 12V 50Ah battery can. And it takes 10-20hrs to fully charge a 100Ah lead-acid battery while 1-2.5hrs of our battery. How efficient!
  • Top Protection & 8 Times Lifespan: Ampere Time LiFePO4 battery is made of automotive-grade LiFePO4 cells, which have a higher energy density, more stable performance & built-in BMS. Compared with the 200-500 cycles and 3-year lifespan of lead-acid batteries, our battery has more than 4000 deep cycles and a 10-year lifespan, which means that the lifetime of one of our 12V 50Ah LiFePO4 batteries is equivalent to the total lifetime of 3-8pcs 12V 100Ah lead-acid batteries. What a huge difference!
  • 4 Times the Value for Money: Ampere Time LiFePO4 battery ensures you a 5-year warranty while the best-selling lead-acid battery is only 1 year. In terms of lifetime use, the value of our 50Ah battery is almost 4 times than 12V 100Ah lead-acid battery. For example, the cost per use of our battery is $0.069($219.99/5-year warranty/640Wh=$0.069), but $0.294 for a 12V 100Ah lead-acid battery ($211.57/1-year warranty/720Wh=$0.294). Data shows that buying our battery is the best investment for your money.
  • 1/6*Lightweight & More Flexible Applications: Ampere Time 12V 50Ah LiFePO4 battery has an extremely lightweight of 11.57lbs/5.25kg, only 1/6 of a 12V 100Ah lead-acid battery (about 60lbs), and a 10-year-old child may be easy to tow or move. Meanwhile, our battery has various connections in parallel (max. capacity of 200Ah) and series (Higher voltage of 24V, 36V, 48V), it’s ideal for home backup systems such as security devices, lights, solar and outdoor activities like boats, camping, trailer, etc.
  • 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, humanized return policy & customer service as we provide easy-to-understand operation manuals & online services with quick feedback within 24hrs. If you have any questions, please feel free to contact us, we will do our best to support you.


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Your On-the-go Power Supply

Super Lightweight and Powerful

Even A 10-year-old Child Can Easily Move 

 Compared with the 60lbs of a 100Ah lead-acid battery, Ampere Time 12V 50Ah Lithium battery is only 1/6*(11.57lbs) the weight.
For safety reasons, keep the battery out of the reach of children.

Last Longer, Play Harder

Max energy: 640Wh               Max output: 640W

Small or Large? It's Up to You!

Ampere Time 12V 50Ah Lithium batteries support up to Max 4S4P connections to get more energy up to 10.24kWh.

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.

Expandable Up to 20.48kW, Living A Life Without Limits

It Is Built Top-notch And Compact

Built-in 50A 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 it as a start battery (such as trolling motor and golf cart),please contact service@amperetime.com for a better solution.

3 Recommend Charging Ways

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

Suitable for Various Occasions

What's Inside the Box?

Your On-the-go Power Supply

Super Lightweight and Powerful

Even A 10-year-old Child Can Easily Move 

Compared with the 60lbs of a 100Ah lead-acid battery, Ampere Time 12V 50Ah Lithium battery is only 1/6*(11.57lbs) the weight.
For safety reasons, do not allow children to touch the batteries

Last Longer, Play Harder

Max energy: 640Wh       Max output: 640W

Small or Large? It's Up to You!

Ampere Time 12V 50Ah Lithium batteries support up to Max 4S4P connections to get more energy up to 10.24kWh.

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.

It Is Built Top-notch And Compact

Built-in 50A 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 it as a start battery (such as trolling motor and golf cart),please contact service@amperetime.com for a better solution.

3 Recommend Charging Ways

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

Suitable for Various Occasions

What's Inside the Box?

Sunday,Monday,Tuesday,Wednesday,Thursday,Friday,Saturday
January,February,March,April,May,June,July,August,September,October,November,December
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Ampere Time 12V 50Ah, 640Wh LiFePO4 Battery with 4000+ Discharge Cycles & Built in 50A BMS

$289.99 $249.99