Batteries & Energy Storage

Solar Panels

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Storage solutions

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Solar Equipment

Racking

Accessories

Solar Panels

Inverters

Storage solutions

Charge controllers

Solar Equipment

Racking

Accessories

538 products

  • Top Rated
    85000005-1

    Canadian Solar EP Cube Components Battery Module 3.3 kWh - B3G - 85000005

    SKU: PES-ESS-BTS-0240
    MPN NO

    85000005

    Canadian Solar
    $1,315.92 USD
    $1,315.92 USD
  • Top Rated
    SimpliPHI 6.6 Wall Base – Mount for 6.65 kWh Battery Stack-newtest

    SimpliPHI 6.6 Wall Base – Mount for 6.65 kWh Battery Stack-newtest

    SKU: PES-SPS-SIV-01841-testing
    SimpliPhi
    $128.70 USD
    $128.70 USD
  • Top Rated
    SimpliPHI 6.6 floor base – Buy Online at A1 Solar

    SimpliPHI 6.6 Floor Base – Ground Mount for 6.65 kWh Stack

    SKU: PES-SPS-SIV-01842
    MPN NO

    53082

    SimpliPhi
    $114.24 USD
    $114.24 USD
  • Top Rated
    SimpliPHI 6.6 Wall Base shelf with multiple compartments on a white background

    SimpliPHI 6.6 Wall Base – Mount for 6.65 kWh Battery Stack

    SKU: PES-SPS-SIV-01841
    MPN NO

    53083

    SimpliPhi
    $109.76 USD
    $109.76 USD
  • Top Rated
    BB‑3 battery bus bar kit – Buy Online at A1 Solar

    BB‑3 Battery Bus Bar Kit – 3‑Terminal Positive/Negative (cables not included)

    SKU: PES-SPS-SIV-01839
    MPN NO

    BB‑3

    Briggs & Stratton
    $262.08 USD
    $262.08 USD
  • Top Rated
    BOSS.6 battery enclosure – Buy Online at A1 Solar

    BOSS.6 Battery Enclosure – Up to 6 Batteries, Shelves & 8′ 4/0 Cables

    SKU: PES-SPS-SIV-01836
    MPN NO

    BOSS.6(053003)

    Briggs & Stratton
    $2,765.62 USD
    $2,765.62 USD
  • Top Rated
    BOSS.6-COMB-2000

    BOSS.6 Battery Combiner – 6 Batteries, 2000 A, Outdoor-Rated

    SKU: PES-SPS-SIV-01835
    MPN NO

    BOSS.6-COMB-2000

    Briggs & Stratton
    $3,908.36 USD
    $3,908.36 USD
  • Top Rated
    BOSS.12 battery enclosure – Buy Online at A1 Solar

    BOSS.12 Battery Enclosure – Up to 12 Batteries, Shelves & 8 ft 4/0 Cables

    SKU: PES-PA-ELC-1834
    MPN NO

    BOSS.12 (053002-00)

    Briggs & Stratton
    $4,734.12 USD
    $4,734.12 USD
  • Top Rated
    Fortress Power 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
    SPHI-6.6-LO

    SimpliPHI 6.6 Battery – 6.65 kWh 48 V Stackable Module

    SKU: PES-ESS-BTS-0274
    MPN NO

    SPHI-6.6-LO

    SimpliPhi
    $2,716.00 USD
    $2,716.00 USD
  • Top Rated
    Deka 8G8D-HLT gel battery – Buy Online at A1 Solar

    Deka 8G8D-HLT 12 V 225 Ah Gel Deep-Cycle Battery

    SKU: PES-ESS-BTS-0273
    MPN NO

    8G8D-HLT-DEKA

    MK Battery
    $956.48 USD
    $956.48 USD
  • Top Rated
    Deka 8A8D-LTP AGM battery – Buy Online at A1 Solar

    Deka 8A8D-LTP 12 V 245 Ah AGM Deep-Cycle Battery

    SKU: PES-ESS-BTS-0272
    MPN NO

    8A8D-LTP-DEKA

    MK Battery
    $754.88 USD
    $754.88 USD
  • Top Rated
    MK Battery Gel Deep Cycle Battery - 12V | Portlandia Electric Supply

    MK Battery DEKA 8G31-HST-DEKA Gel Deep Cycle Lead-Acid Storage Battery 12V

    SKU: PES-ESS-BTS-0271
    MPN NO

    8G31-HST-DEKA

    MK Battery
    $328.55 USD
    $328.55 USD
  • Top Rated
    MK Battery Gel Deep Cycle Battery - 12V | Portlandia Electric Supply

    MK Battery DEKA 8G27-HFL-DEKA Gel Deep Cycle Lead-Acid Storage Battery 12V

    SKU: PES-ESS-BTS-0239
    MPN NO

    DEKA 8G27-HFL

    MK Battery
    $324.46 USD
    $324.46 USD
  • Top Rated
    Generac Sure Start 208/230v (08-16) RLA | Portlandia Electric Supply

    Generac Sure Start 208/230v (08-16) RLA

    SKU: PES-ESS-BTS-0270
    MPN NO

    8007

    Generac
    $431.19 USD
    $431.19 USD
  • Top Rated
    Generac Demo PWRcell Inverter APKE00027 mounted on a wall, connected to solar panels for residential energy backup.

    Generac PWRcell Inverter Display Model APKE00027 for Solar Training & Exhibitions

    SKU: PES-ESS-BTS-0238
    MPN NO

    APKE00027

    Generac
    $197.94 USD
    $197.94 USD
  • Top Rated
    Generac Demo PWRcell Energy Storage System - APKE00026 | Portlandia Electric Supply

    Generac Demo PWRcell Energy Storage System - APKE00026

    SKU: PES-ESS-BTS-0237
    MPN NO

    APKE00026

    Generac
    $768.95 USD
    $768.95 USD
  • Top Rated
    Generac Single Phase Inverter UL1741SB mounted on a wall with solar panels in the background, showcasing a modern residential solar setup.

    Generac 7.6kW 1Ã PWRcell INVERTER W/ CTS UL1741SB Compliant - XVT076A03-SB

    Sale
    SKU: PES-ESS-BTS-0236
    MPN NO

    XVT076A03-SB

    Generac
    $3,551.88 USD
    $3,989.35 USD $3,551.88 USD
    Sale

Batteries & Energy Storage Solutions

Store your solar energy and keep the power on with batteries and energy storage systems from PES Supply. Our inventory covers every chemistry and capacity—from LiFePO4 lithium batteries and sealed lead-acid to AGM and gel batteries. Power your off-grid cabin, whole-home backup system, or commercial microgrid with reliable storage from EG4, Fortress Power, BYD, SONNEN, Victron Energy, and more.

Find the Right Battery

  • LiFePO4 lithium batteries – 5kWh, 10kWh, 14kWh, and 19kWh options
  • AGM & gel sealed lead-acid for budget-friendly backup
  • Server-rack batteries like EG4 LifePower and server rack modules
  • Modular stackable systems for scalable capacity
  • Battery accessories – cables, busbars, shunts, and BMS

Lithium iron phosphate (LiFePO4) batteries offer 6,000+ cycle lifetimes, built-in BMS protection, and safe operation in any orientation. Choose the right voltage (12V, 24V, 48V) and capacity for your inverter and load profile. Our team can help you size a bank for any 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.