Attwood Battery Maintenance Charger
Attwood Battery Maintenance Charger
Attwood Battery Maintenance Charger
Attwood Battery Maintenance Charger

Attwood Battery Maintenance Charger MPN - 11900-4

$46.51
$51.16
$46.51

MPN : 11900-4

SKU: 52331
Availability: In stock
Product type: Winterizing | Battery Management,Automotive/RV | Accessories,Electrical | Battery Chargers
Please hurry! Only 5 left in stock
Subtotal: $46.51
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Fully automatic 1.5 A maintenance charge for 12 V batteries
Short-circuit and reverse-polarity protection
LED status indicators; water resistant (store listing)
Attwood Battery Maintenance Charger

Attwood Battery Maintenance Charger MPN - 11900-4

$51.16 $46.51
Attwood Battery Maintenance Charger
Attwood Battery Maintenance Charger

Attwood Battery Maintenance Charger MPN - 11900-4

$51.16 $46.51

    The Attwood Battery Maintenance Charger, MPN 11900-4, keeps a single 12 V battery charged while a boat, RV or vehicle is stored. Our store listing describes it as a fully automatic charger that delivers a 1.5 A maintenance charge, so it is meant for keeping a battery topped up rather than recharging a deeply discharged one quickly.

    The listing describes it as water resistant, with LED status indicators and protection against short circuits and reverse polarity. Our catalog data lists a 120 V AC input and a single charging bank.

    Attwood's own product page could not be reached when this content was prepared, so charging stages, battery types, connection method and warranty are not listed here. Contact us if you need those details before ordering.

    Clear Product Details

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    Surface Guidance

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    Installation & Compatibility Guides

    Check Both Connections and the Electrical Rating

    The 11900-4 is a 1.5 A maintenance charger for one 12 V battery. Check these six points before you buy.

    1. Identify the Accessory Function

      This is a maintenance charger. It keeps a battery topped up; it is not a fast charger or an inverter.

    2. Check Both Connection Ends

      It plugs into a 120 V outlet and connects to one 12 V battery.

    3. Verify Electrical Ratings

      The charge output is 1.5 A for 12 V batteries.

    4. Measure the Required Length

      Check that the AC cord and battery leads reach between outlet and battery.

    5. Review Environment and Orientation

      Our listing describes it as water resistant. Keep it clear of standing water.

    6. Confirm Contents and Installation

      Follow Attwood's instructions for connection and mounting. Ask us if you need details first.

    Maintenance Charger or Full Battery Charger?

    A maintenance charger supplies a low current to keep a stored battery full and offset self-discharge. A full battery charger delivers higher current to recharge a discharged battery in a reasonable time.

    At 1.5 A, the Attwood 11900-4 suits storage and top-up use. For faster charging or multiple banks, compare the battery chargers in our Charger/Inverter Combos collection.

    Find the Right Electrical Accessory

    Use these collections to compare electrical and power accessories and related equipment. A collection link is for browsing and does not confirm compatibility.

    2. Explore Power Inverters

      Review this related shopping category if your project also involves power inverters. Check each item separately for suitability; this link does not establish a compatible pairing.

      Browse Power Inverters

    3. Explore Automotive & RV Accessories

      Return to the parent collection to find a different product family for your maintenance, replacement or upgrade task.

      Browse Automotive/RV

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    Frequently Asked Questions

    What does the Attwood 11900-4 do?
    It keeps one 12 V battery topped up with a 1.5 A maintenance charge.
    Can it recharge a flat battery?
    It is a 1.5 A maintenance charger, so recharging a deeply discharged battery would be slow. Use a higher-output charger for that.
    Is it automatic?
    Our store listing describes it as fully automatic.
    What protection does it have?
    Short-circuit and reverse-polarity protection, according to our store listing.
    What power does it need?
    Our catalog data lists a 120 V AC input.
    Is it waterproof?
    Our store listing describes it as water resistant, not waterproof.
    Which battery types does it charge?
    Attwood's page could not be reached to confirm battery types. Contact us before using it with lithium batteries.
    Can it charge two batteries?
    No. It has a single charging bank.

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