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Deal.ai › Batteries & Chargers
Xantrex
Xantrex 36V 50Ah Lithium-Ion Battery

Xantrex 36V 50Ah Lithium-Ion Battery

Best price now

$1,149.99at West MarineChecked Nov 9

Prices are checked against each store and labelled with when. Store links may earn us a commission. Price via Klarna.

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Price facts

  • Last seen at $1,149.99 at West Marine on Nov 9.

    • Our take on the Xantrex 36V 50Ah Lithium-Ion Battery

    The Xantrex 36V 50Ah battery is a LiFePO4 (lithium iron phosphate) pack rated at 36 volts and 50 amp-hours, roughly 1.8 kWh of usable energy. LiFePO4 chemistry is the draw: it holds up to far more charge cycles than lead-acid, keeps its voltage steadier under load, and weighs much less for the same capacity. It suits owners of 36V electric outboards, trolling motors, golf carts and off-grid or marine DC systems who want a drop-in lithium upgrade. Against generic 36V lithium packs it trades the lowest price for a known power-electronics brand, though Xantrex's strength is inverters and chargers, not battery cells.

    Best for36V electric outboard and trolling motor ownersMarine and off-grid DC power systemsGolf cart and utility vehicle upgradesBuyers replacing lead-acid with lithium
    Pros
    • LiFePO4 chemistry is safer and longer-lived than typical lithium-ion
    • Steady voltage under load, so motors run at full power longer
    • Much lighter than an equivalent lead-acid bank
    • 50Ah gives about 1.8 kWh at 36V
    • Matches Xantrex inverters and chargers
    Cons
    • Needs a lithium-compatible 36V charger; many lead-acid chargers will not do
    • Cold-weather charging must be limited unless the BMS handles it
    • Few independent test results compared with big battery-only brands
    • Check the BMS current rating against your motor's peak draw

    Xantrex 36V 50Ah Lithium-Ion Battery prices at every store

    • West MarineNew

      In stock

      $1,149.99Checked Nov 9
      Visit West Marine

    Store links may earn us a commission. Price via Klarna.

    Xantrex 36V 50Ah Lithium-Ion Battery price history

    Lowest price we've seen: $1,149.99 on Nov 10 at West Marine. Tracked across 1 store since Nov 10.

    Specifications

    Battery Technology
    LiFePO4Source
    Type
    BatteriesSource
    Power Max (Ah) (Ah)
    50.0Source
    Batteries
    Other BatteriesSource
    Input Voltage (V)
    36.0Source

    Questions and answers

    What can a 36V 50Ah battery run?
    About 1.8 kWh, enough for a day of trolling motor use, a small 36V outboard, or modest off-grid loads. Continuous draw is limited by the built-in BMS, so check its amp rating against your motor.
    Is LiFePO4 better than lead-acid here?
    Yes for most users. It delivers more usable capacity, holds voltage under load, lasts many more cycles and weighs far less. The trade-off is a higher upfront cost and the need for a lithium-compatible charger.
    Can I charge it with a normal 36V charger?
    Only with one rated for lithium/LiFePO4 charging, typically 42–43.8V absorption. A lead-acid charger can overcharge or fail to fully charge it.
    Can it be charged in cold weather?
    Charging below freezing damages LiFePO4 cells. Unless the BMS blocks cold charging, wait until the pack warms above 0°C (32°F) before plugging in.
    Does it replace a 36V lead-acid bank directly?
    Physically it drops in, but confirm your charger and motor's current draw suit lithium. Many owners also add a lithium profile or DC-DC charger.
    Where is the Xantrex 36V 50Ah Lithium-Ion Battery cheapest?
    At West Marine, for $1,149.99, as of our latest check.