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Big Beard Battery  |  SKU: BBB12V300
15% off

Big Beard Battery 12V 300Ah Lithium Battery

$1,699.00 $1,999.00
Shipping calculated at checkout.

Pickup available at Road Life Complex

Usually ready in 1–2 business days

Delivery and Shipping

All Big Beard Battery orders qualify for free standard shipping within the contiguous United States and Washington, DC—even when purchasing just one battery. Components purchased on the same order also ship free.

Our 24V and 48V batteries ship by LTL freight.

Description

Built for RV, off-grid, and backup-power applications, the Big Beard Battery 12V 300Ah Lithium Battery delivers 3,840Wh of energy storage with Bluetooth monitoring, Victron ESS Direct communication, active cell balancing, and integrated self-heating.

Key features

  • 300Ah capacity: Provides substantial stored energy for demanding RV and off-grid systems.
  • Bluetooth monitoring: View battery information through the Bluetooth app.
  • Victron ESS Direct: Designed to communicate with compatible Victron systems.
  • Active cell balancing: Helps equalize cell voltages for consistent performance and battery longevity.
  • Temperature protection and self-heating: Includes high- and low-temperature protection for changing operating conditions.
  • Integrated BMS: Provides overcharge, over-discharge, and other system protections.

Performance

  • Recommended continuous discharge: 250A
  • Recommended continuous charge: 150A
  • Maximum continuous charge and discharge: 300A

Shipping: $100 shipping for a single 12V battery.

Specifications
  • Battery Chemistry
    LiFePO4 (Lithium Iron Phosphate)
  • Cell Type
    Prismatic
  • Nominal Voltage (V)
    12.8
  • Capacity (Ah)
    305
  • Energy (Wh)
    3,660
  • Applications
    Solar Energy Storage, RV/Off-grid Use, Off-grid Power Systems, Backup Power
  • Cycle Life
    4,000
  • Cycle-Life Depth of Discharge (%)
    80
  • Design Life (Years)
    11
  • Warranty Summary
    11-year limited warranty; 11-year expected lifespan
  • Installation Environment
    Indoor use only; not rated for outdoor use
  • Length
    14.56 in
  • Width
    8.5 in
  • Height
    12.8 in
  • Weight
    63 lb
  • Case Material
    Metal
  • Terminal Type
    Bolt-down M8 bolt
  • BMS Type
    Internal Battery Management System (BMS)
  • Protection Features
    Overcharge, over-discharge, overcurrent, short circuit, internal heat, high/low voltage, cold charging, and hot/cold temperature protection
  • Maximum Continuous Discharge Current (A)
    300
  • Peak Discharge Current (A)
    450
  • Peak-Current Duration (Seconds)
    20
  • Maximum Continuous Charge Current (A)
    300
  • Discharge Temperature Range
    34°F to 120°F
  • Charge Temperature Range
    32°F to 113°F
  • Self-Heating Activation Temperature (°F)
    34
  • Self-Heating Shutoff Temperature (°F)
    40
  • Storage Temperature Range
    -4°F to 113°F
  • Storage-Mode Switch
    Yes
  • Round-Trip Efficiency (%)
    96
  • Self-Discharge Rate (% per month)
    3
  • Operating Voltage Minimum (V)
    12
  • Operating Voltage Maximum (V)
    14.6
  • Discharge Cutoff Voltage (V)
    11.2
  • Charge Cutoff Voltage (V)
    14.6
  • Absorption Time (Hours)
    2.5
  • Absorption Voltage Minimum (V)
    14.2
  • Absorption Voltage Maximum (V)
    14.4
  • Float Voltage Minimum (V)
    13.4
  • Float Voltage Maximum (V)
    13.8
  • Balancing Methods
    Active balancing while charging
  • Balancing Activation Voltage Per Cell (V)
    3.4

Payment & Security

Payment methods

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