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
    Pulsar 20V Air Pump / Inflator | Lithium-Ion | 2000mAh | Cordless | 0-30psi | Perfect for Tires, Balls, Pool Toys & More - PT2701

    Pulsar 20V Air Pump / Inflator | Lithium-Ion | 2000mAh | Cordless | 0-30psi | Perfect for Tires, Balls, Pool Toys & More - PT2701

    SKU: PES-PA-ELC-1916
    MPN NO

    PT2701

    Pulsar
    $205.41 USD
    $205.41 USD
  • Top Rated
    Pulsar 20V 4-1/2” Cordless 2.0Ah Lithium-Ion Angle Grinder - PT2620

    Pulsar 20V 4-1/2” Cordless 2.0Ah Lithium-Ion Angle Grinder - PT2620

    SKU: PES-PA-ELC-1915
    MPN NO

    PT2620

    Pulsar
    $165.30 USD
    $165.30 USD
  • Top Rated
    Pulsar PT28136 - 3.6V Lithium-Ion Cordless 1/4” Screwdriver - PT28136

    Pulsar PT28136 - 3.6V Lithium-Ion Cordless 1/4” Screwdriver - PT28136

    SKU: PES-PA-ELC-1914
    MPN NO

    PT28136

    Pulsar
    $49.74 USD
    $49.74 USD
  • Top Rated
    Pulsar PT28220R 20V Lithium-Ion Cordless Ratchet Wrench - PT28220R

    Pulsar PT28220R 20V Lithium-Ion Cordless Ratchet Wrench - PT28220R

    SKU: PES-PA-ELC-1913
    MPN NO

    PT28220R

    Pulsar
    $184.25 USD
    $184.25 USD
  • Top Rated
    Pulsar 20V Lithium Ion Cordless Impact Wrench - PT28220

    Pulsar 20V Lithium Ion Cordless Impact Wrench - PT28220

    SKU: PES-PA-ELC-1912
    MPN NO

    PT28220

    Pulsar
    $151.99 USD
    $151.99 USD
  • Top Rated
    Pulsar 20-Volt Lithium-Ion Cordless 1/4 in. Hex Impact Driver with (1) 2 Ah Battery, 1-Hour Charger, and LED Light - PT28120

    Pulsar 20-Volt Lithium-Ion Cordless 1/4 in. Hex Impact Driver with (1) 2 Ah Battery, 1-Hour Charger, and LED Light - PT28120

    SKU: PES-PA-ELC-1911
    MPN NO

    PT28120

    Pulsar
    $124.44 USD
    $124.44 USD
  • Top Rated
    Pulsar 20V Lithium Ion 6 Setting Cordless Multi-tool for Sawing, Cutting, and Sanding with LED Work Light and Bonus Accessories - PT26M20K

    Pulsar 20V Lithium Ion 6 Setting Cordless Multi-tool for Sawing, Cutting, and Sanding with LED Work Light and Bonus Accessories - PT26M20K

    SKU: PES-PA-ELC-1910
    MPN NO

    PT26M20K

    Pulsar
    $134.45 USD
    $134.45 USD
  • Top Rated
    Pulsar 20V, 19+1 Torque Settings, Lithium-Ion Cordless Drill/Driver with Belt Clip & LED Spotlight - PT2520

    Pulsar 20V, 19+1 Torque Settings, Lithium-Ion Cordless Drill/Driver with Belt Clip & LED Spotlight - PT2520

    SKU: PES-PA-ELC-1909
    MPN NO

    PT2520

    Pulsar
    $111.99 USD
    $111.99 USD
  • Top Rated
    Fortress eVault Max 18.5 kWh Lithium Battery Storage

    Fortress eVault Max 18.5 kWh Lithium Battery Storage

    Sold out
    SKU: PES-ESS-BTS-0275
    MPN NO

    eVaultMax18.5

    Fortress Power
    $6,476.00 USD
    $6,476.00 USD
    Sold out
  • Top Rated
    EG4 Electronics LifePower4 24V V2 200AH Lithium Iron Phosphate Battery - EG4LP24V200AV2

    EG4 Electronics LifePower4 24V V2 200AH Lithium Iron Phosphate Battery - EG4LP24V200AV2

    SKU: PES-ESS-BTS-0229
    MPN NO

    EG4LP24V200AV2

    EG4 Electronics
    $1,447.10 USD
    $1,447.10 USD
  • Top Rated
    EG4 Electronics LiFePower4 48V V1 100Ah Lithium Iron Phosphate Battery - EG4LP48V100AV1

    EG4 Electronics LiFePower4 48V V1 100Ah Lithium Iron Phosphate Battery - EG4LP48V100AV1

    SKU: PES-ESS-BTS-0228
    MPN NO

    EG4LP48V100AV1

    EG4 Electronics
    $1,196.60 USD
    $1,196.60 USD
  • Top Rated
    EG4 Electronics LL V2 12V V2 400AH Lithium Iron Phosphate Battery

    EG4 Electronics LL V2 12V V2 400AH Lithium Iron Phosphate Battery

    SKU: PES-ESS-BTS-0226
    MPN NO

    EG4LP12V400AV3

    EG4 Electronics
    $1,298.68 USD
    $1,298.68 USD
  • Top Rated
    EG4 Electronics LL 24V V2 200AH Lithium Iron Phosphate Battery - EG4LL24V200AV1

    EG4 Electronics LL 24V V2 200AH Lithium Iron Phosphate Battery - EG4LL24V200AV1

    SKU: PES-ESS-BTS-0225
    MPN NO

    EG4LL24V200AV1

    EG4 Electronics
    $1,499.58 USD
    $1,499.58 USD
  • Top Rated
    EG4 Electronics LL-S 48V 100AH Lithium Iron Phosphate Battery

    EG4 Electronics LL-S 48V 100AH Lithium Iron Phosphate Battery

    SKU: PES-ESS-BTS-0224
    MPN NO

    EG4LL48V100AV4

    EG4 Electronics
    $1,498.75 USD
    $1,498.75 USD
  • Top Rated
    Briggs and Stratton PHI-3.8-48-M

    Simpliphi 3.8KWH Lithium Iron Phospate Battery (White Metal Case) - PHI-3.8-48-M

    SKU: PES-ESS-BTS-0162
    MPN NO

    PHI-3.8-48-M

    SimpliPhi
    $2,426.05 USD
    $2,426.05 USD
  • Top Rated
    Generac G008004

    Generac Pwrcell 3.0KWH Lithium-ion Battery Module - G008004

    SKU: PES-ESS-BTS-0156
    MPN NO

    G008004

    Generac
    $2,029.09 USD
    $2,029.09 USD
  • Top Rated
    Panasonic Evervolt 2.85KWH Lithium-ion Battery - BJ-DCB105ZKT

    Panasonic Evervolt 2.85KWH Lithium-ion Battery - BJ-DCB105ZKT

    SKU: PES-ESS-BTS-0144
    MPN NO

    BJ-DCB105ZKT

    Panasonic
    $1,614.15 USD
    $1,614.15 USD
  • Top Rated
    Simpliphi 1.4KWH 12V Lithium Iron Phosphate Battery - PHI-1.4-12-T

    Simpliphi 1.4KWH 12V Lithium Iron Phosphate Battery - PHI-1.4-12-T

    SKU: PES-ESS-BTS-0141
    MPN NO

    PHI-1.4-12-T

    SimpliPhi
    $1,194.20 USD
    $1,194.20 USD

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.