Lithium Batteries

About Lithium Batteries

Lithium Batteries for Solar & Backup

Power your solar, off-grid, or backup system with high-performance lithium batteries from PES Supply. Lithium batteries offer dramatically longer cycle life, lighter weight, and deeper discharge capability compared to lead-acid—making them the smart choice for energy storage. Shop brands including EG4, Fortress Power, BYD, SONNEN, Victron Energy, and more.

Lithium Battery Advantages

  • 3,000-6,000+ cycles vs. 500 for lead-acid
  • 80% depth of discharge safe and routine
  • Lighter and smaller for equivalent capacity
  • Built-in BMS for cell protection and balancing
  • Flat discharge curve maintains voltage longer

Lithium batteries include both LiFePO4 (lithium iron phosphate) and NMC chemistries. LiFePO4 offers the best safety and longevity, while NMC provides higher energy density. Our team can help you choose the right chemistry, voltage, and capacity for your inverter and application.

Browse the full selection below and order today with fast shipping from PES Supply. Questions? Our solar and backup power experts are ready to help you spec the right system—contact us.

Solar Panels

Inverters

Storage solutions

Charge controllers

Solar Equipment

Racking

Accessories

Solar Panels

Inverters

Storage solutions

Charge controllers

Solar Equipment

Racking

Accessories

141 products

  • Top Rated
    APsystems APstorage 10.24kWh Lithium Battery & 11.4kW Inverter Kit

    APsystems APstorage 10.24kWh Lithium Battery & 11.4kW Inverter Kit

    SKU: USS-APSY-APSAPS10.
    APsystems
    $6,886.00 USD
    $6,886.00 USD
  • Top Rated
    Outback Power 15.36kWh EnergyCell 5 Stackable Heated Lithium Battery - 3 Stack EC-FE5148

    Outback Power 15.36kWh EnergyCell 5 Stackable Heated Lithium Battery - 3 Stack EC-FE5148

    SKU: USS-OUTB-EC-FE5148
    Outback Power
    $6,927.00 USD
    $6,927.00 USD
  • Top Rated
    Outback Power EnergyCell 5 Stackable Heated Lithium Battery EC-FE5148

    Outback Power EnergyCell 5 Stackable Heated Lithium Battery EC-FE5148

    SKU: USS-OUTB-EC-FE5148
    Outback Power
    $1,996.99 USD
    $1,996.99 USD
  • Top Rated
    Outback Power 25.6kWh EnergyCell 5 Stackable Heated Lithium Battery - 5 Stack EC-FE5148

    Outback Power 25.6kWh EnergyCell 5 Stackable Heated Lithium Battery - 5 Stack EC-FE5148

    SKU: USS-OUTB-EC-FE5148
    Outback Power
    $10,536.00 USD
    $10,536.00 USD
  • Top Rated
    Outback Power 20.48kWh EnergyCell 5 Stackable Heated Lithium Battery - 4 Stack EC-FE5148

    Outback Power 20.48kWh EnergyCell 5 Stackable Heated Lithium Battery - 4 Stack EC-FE5148

    SKU: USS-OUTB-EC-FE5148
    Outback Power
    $8,827.00 USD
    $8,827.00 USD
  • Top Rated
    HomeGrid Stack'd 9.6 kWh - (2) 48V Lithium Battery Standard All Weather Modules + BMS and Base HG-2-Stack

    HomeGrid Stack'd 9.6 kWh - (2) 48V Lithium Battery Standard All Weather Modules + BMS and Base HG-2-Stack

    Sold out
    SKU: USSB100-0006
    HomeGrid
    $6,376.95 USD
    $6,408.99 USD $6,376.95 USD
    Sold out
  • Top Rated
    HomeGrid Stack'd 14.4 kWh (3) 48V Lithium Battery Standard All Weather Modules + BMS and Base HG-3-Stack

    HomeGrid Stack'd 14.4 kWh (3) 48V Lithium Battery Standard All Weather Modules + BMS and Base HG-3-Stack

    Sold out
    SKU: USSB100-0007
    HomeGrid
    $8,747.50 USD
    $8,791.46 USD $8,747.50 USD
    Sold out
  • Top Rated
    HomeGrid Stack'd 19.2 kWh - (4) 48V Lithium Battery Standard All Weather Modules + BMS and Base HG-4-Stack

    HomeGrid Stack'd 19.2 kWh - (4) 48V Lithium Battery Standard All Weather Modules + BMS and Base HG-4-Stack

    Sold out
    SKU: USSS100-0056
    HomeGrid
    $9,551.00 USD
    $9,599.00 USD $9,551.00 USD
    Sold out
  • Top Rated
    HomeGrid Stack'd 28.8 kWh - (6) 48V Standard All Weather Lithium Battery + BMS and Base HG-6-Stack

    HomeGrid Stack'd 28.8 kWh - (6) 48V Standard All Weather Lithium Battery + BMS and Base HG-6-Stack

    Sold out
    SKU: USSB100-0008
    HomeGrid
    $15,856.31 USD
    $15,935.99 USD $15,856.31 USD
    Sold out
  • Top Rated
    MidNite Solar MNLBC Lithium Battery Combiner

    MidNite Solar MNLBC Lithium Battery Combiner

    Sold out
    SKU: USSB100-0052
    MidNite Solar
    $301.67 USD
    $303.19 USD $301.67 USD
    Sold out
  • Top Rated
    Fortress Power DuraRack For The Fortress eFlex 5.4 kWh Lithium Batteries

    Fortress Power DuraRack For The Fortress eFlex 5.4 kWh Lithium Batteries

    Sold out
    SKU: USSS100-0007
    Fortress Power
    $1,433.25 USD
    $1,440.45 USD $1,433.25 USD
    Sold out
  • Top Rated
    Fortress Power eForce 9.6kW Stackable 48V eForce 9.6 Outdoor Heated Lithium Battery

    Fortress Power eForce 9.6kW Stackable 48V eForce 9.6 Outdoor Heated Lithium Battery

    Sold out
    SKU: USSSP201-558
    Fortress Power
    $5,298.38 USD
    $5,325.00 USD $5,298.38 USD
    Sold out
  • Top Rated
    HomeGrid Stack'd 38.4 kWh - (8) 48V Lithium Battery Standard All Weather Modules + BMS and Base HG-8-Stack

    HomeGrid Stack'd 38.4 kWh - (8) 48V Lithium Battery Standard All Weather Modules + BMS and Base HG-8-Stack

    Sold out
    SKU: USSSP202-338
    HomeGrid
    $16,814.51 USD
    $16,899.00 USD $16,814.51 USD
    Sold out
  • Top Rated
    HomeGrid Stack'd 24 kWh - (5) 48V Standard All Weather Lithium Battery Modules + BMS and Base HG-5-Stack

    HomeGrid Stack'd 24 kWh - (5) 48V Standard All Weather Lithium Battery Modules + BMS and Base HG-5-Stack

    Sold out
    SKU: USSSP202-366
    HomeGrid
    $10,645.50 USD
    $10,699.00 USD $10,645.50 USD
    Sold out
  • Top Rated
    HomeGrid Stack'd HEATED 19.2 kWh - (4) 48V Lithium Battery Heated All Weather Modules + BMS and Base HG-4-Stack

    HomeGrid Stack'd HEATED 19.2 kWh - (4) 48V Lithium Battery Heated All Weather Modules + BMS and Base HG-4-Stack

    Sold out
    SKU: USSSP202-419
    HomeGrid
    $9,849.50 USD
    $9,899.00 USD $9,849.50 USD
    Sold out
  • Top Rated
    Discover Energy 16.1 kWh Outdoor Lithium Battery Helios Series 52-48-16000

    Discover Energy 16.1 kWh Outdoor Lithium Battery Helios Series 52-48-16000

    Sold out
    SKU: USSSP202-408
    Discover Energy
    $3,088.47 USD
    $3,103.99 USD $3,088.47 USD
    Sold out
  • Top Rated
    Fox ESS 3.97kWh Lithium Iron Phosphate Battery Module 97-223-00023-00

    Fox ESS 3.97kWh Lithium Iron Phosphate Battery Module 97-223-00023-00

    Sold out
    SKU: USSSP202-389
    Fox ESS
    $1,243.75 USD
    $1,250.00 USD $1,243.75 USD
    Sold out
  • Top Rated
    Rubix 14.3 kWh Battery 24 Volt 560 AH R-Series Lithium Battery RRS-25560

    Rubix 14.3 kWh Battery 24 Volt 560 AH R-Series Lithium Battery RRS-25560

    Sold out
    SKU: USSSP202-564
    Rubix Battery
    $3,476.51 USD
    $3,493.98 USD $3,476.51 USD
    Sold out

Lithium Batteries for Solar & Backup

Power your solar, off-grid, or backup system with high-performance lithium batteries from PES Supply. Lithium batteries offer dramatically longer cycle life, lighter weight, and deeper discharge capability compared to lead-acid—making them the smart choice for energy storage. Shop brands including EG4, Fortress Power, BYD, SONNEN, Victron Energy, and more.

Lithium Battery Advantages

  • 3,000-6,000+ cycles vs. 500 for lead-acid
  • 80% depth of discharge safe and routine
  • Lighter and smaller for equivalent capacity
  • Built-in BMS for cell protection and balancing
  • Flat discharge curve maintains voltage longer

Lithium batteries include both LiFePO4 (lithium iron phosphate) and NMC chemistries. LiFePO4 offers the best safety and longevity, while NMC provides higher energy density. Our team can help you choose the right chemistry, voltage, and capacity for your inverter and application.

Browse the full selection below and order today with fast shipping from PES Supply. Questions? Our solar and backup power experts are ready to help you spec the right system—contact us.