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  • Generac 10000020303 Battery 12 V Lithium Ion Generac Assembly
  • Top of Generac Battery 12 V Lithium Ion Generac Assembly
  • Bottom view Generac Battery 12 V Lithium Ion Generac Assembly
  • Top of Generac Battery 12 V Lithium Ion Generac Assembly Bottom view Generac Battery 12 V Lithium Ion Generac Assembly

    Generac 10000020303 Battery 12 V Lithium Ion Generac Assembly

    Generac

    MSRP: $101.89
    Now: $69.99
    (You save $31.90 )
    This ships free!
    Affordable 2 day and overnight shipping also available at checkout
    (4 reviews) Write a Review
    SKU:
    10000020303
    Condition:
    New
    Shipping:
    Calculated at Checkout

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    Product Description

    This is the battery that fits most Generac OneWash power washers.

    If you also need the charger for this battery, it can be found here: Generac 10000020284 Charger

    For the ultimate in reliable generator power, look no further than the Generac 10000020303 Battery Lithium-Ion Assembly. This power solution is designed to deliver unparalleled reliability and efficiency. Created with the finest materials and by the trusted Generac brand, this battery provides consistent output and ensures dependable operation when you need it most.

    This battery harnesses the power of lithium-ion technology, which offers superior performance and longevity compared to traditional batteries. Experience faster charging times, longer lifespan, and more impressive energy output. Lithium-ion batteries also maximize energy utilization, delivering more power with less waste. A lithium-ion battery improves efficiency and can help prolong the life of your machine.

    Another major benefit of this battery is easy installation and compatibility with a range of models. Installation will be a breeze for beginners and professionals alike. Invest in the performance of your generator by purchasing a Generac 10000020303 Battery Lithium-Ion Assembly today.

    These batteries can only ship via UPS Ground. If you select Next Day, 2nd Day air, or 3 day air shipping, your order will be cancelled. Lithium Ion batteries cannot be shipped via Air.  We cannot ship these batteries to Puerto Rico or the Virgin Islands. 

    Generac replacement parts will also usually fit the following Generac-branded generators:

    • Honeywell
    • Guardian
    • Siemens
    • Carrier
    • Watchdog
    • Centurion
    • Eaton
    • Bryant

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    Top of Generac Battery 12 V Lithium Ion Generac Assembly
    Generac
    Generac 10000020303 Battery 12 V Lithium Ion Generac Assembly

    4 Reviews Hide Reviews Show Reviews

    • 5
      Generac Power Washer Battery

      Posted by Greg on 7th May 2025

      Easy ordering and checkout on website. My order was filled and shipped promptly. Very pleased with this company. Will definitely do business with them again.

    • 5
      battery

      Posted by Kathryn Fitzjerald on 17th Jul 2024

      it took me a long time to find your product..glad i did ,, Thank you

    • 5
      OEM Replacement

      Posted by Lonnie on 2nd May 2024

      OEM battery that came with the generator. Wanted a spare on hand so I could swap them out as needed. Works perfectly. Quick shipping and delivery.

    • 5
      worked

      Posted by Unknown on 7th Mar 2024

      The battery was as expected. The delivery time was 4 days including a weekend.

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