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Ampere Time 12V 400Ah, 5120Wh Lithium LiFePO4 Battery & Built in 250A BMS

from $1,899.99

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


  • 5.12kWh Larger Capacity | 3.2kW Higher Power: With 5.12kWh energy and max 3.2kW continuous load power (max 250A continuous charge & discharge current ), Ampere Time 12V 400Ah LiFePO4 battery meets your higher power and longer battery runtime at one time.
  • Grade A Cells | 8× Longer Life: Ampere Time LiFePO4 battery provides 4000+ deep cycles & a 10-year lifetime, extending the battery lifespan by 8× more than the lead-acid batteries.
  • 100% Protection | Using without Risk: Ampere Time 12V 400Ah lithium battery builds in 250A BMS to protect from overcharging & discharging, over current, short circuit, and over temp. Green energy, non-toxic.
  • 5 Hours Fast Charging: 5 hours fully charged by a 14.6V 80A dedicated LiFePO4 battery charger and Within one day by a solar panel more than 1800W.
  • 81.92 kWh Max. Energy Expansion: Ampere Time 12V 400Ah supports max 4P4S connection to reach up to 81.92kWh (51.2kW), perfect for off-grid applications, like solar or energy storage system, backup power, RV, security or surveillance systems.


Size: 1 Pack 12V 400Ah

  • 1 Pack 12V 400Ah
  • 2 Pack (Save $37)
  • 12V 400Ah + 40A Charger (Save 5%)
Will not ship until [19041994]
$1,899.99

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12 Days Maximum Runtime
Keep You Away From the Power Outage

“Ampere Time 12V 400Ah LiFePO4 battery provides you 5.12kWh energy supply,
last 12 days to keep you away from the power outage(ensure a daily electricity demand of 0.4kWh)."

Larger Capacity, Supply for All Major Appliance

Higher Supporting Power Meets Your More Colorful Life

1/2 Space Saving & Easy to Use

One 12V 400Ah(5.12kWh) LiFePO4 battery=4Pcs 12V 100Ah LiFePO4 batteries in 4P (Or 8 Pcs 12V 100Ah AGM batteries in 8P)

Up to 81.92kWh Energy Expansion
Power you from the U.S to France

Ampere Time 12V 400Ah Lithium batteries support up to Max 4S4P connections to get more energy up to 81.92kWh.

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.

12V 400Ah LiFePO4 Battery For Solar Home System

Automotive Grade Battery Cells Proven & Precise BMS Board

BMS-Protection for Overcharge, over-discharge, over current, short circuit, High temperature>70℃

100% safety Protection

Recycle & Environmentally friendly

High Energy Density: 131Wh/kg, 60Wh/lb, 10% higher than 4×12V 100Ah LiFePO4 Batteries in parallel(116Wh/kg, 53Wh/lb).

*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

Born for Long-term Electricity Supply

What's Inside the Box?

12 Days Maximum Runtime
Keep You Away From the Power Outage

“Ampere Time 12V 400Ah LiFePO4 battery provides you 5.12kWh energy supply,
last 12 days to keep you away from the power outage(ensure a daily electricity demand of 0.4kWh)."

Larger Capacity, Supply for All Major Appliance

Higher Supporting Power Meets Your More Colorful Life

1/2 Space Saving & Easy to Use

One 12V 400Ah(5.12kWh) LiFePO4 battery=4Pcs 12V 100Ah LiFePO4 batteries in 4P (Or 8 Pcs 12V 100Ah AGM batteries in 8P)

Up to 81.92kWh Energy Expansion
Power you from the U.S to France

Ampere Time 12V 400Ah Lithium batteries support up to Max 4S4P connections to get more energy up to 81.92kWh.

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.

12V 400Ah LiFePO4 Battery For Solar Home System

Automotive Grade Battery Cells Proven & Precise BMS Board

BMS-Protection for Overcharge, over-discharge, over current, short circuit, High temperature>70℃

100% safety Protection

Recycle & Environmentally friendly

High Energy Density: 131Wh/kg, 60Wh/lb, 10% higher than 4×12V 100Ah LiFePO4 Batteries in parallel(116Wh/kg, 53Wh/lb).

*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

Born for Long-term Electricity Supply

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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