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Humsienk
Humsienk 12V 200Ah Plus LiFePO4 Battery

Humsienk 12V 200Ah Plus LiFePO4 Battery

Best price now

$500.00at eBayObserved at 7:37 PM

Compared across 2 stores. Prices are checked against each store and labelled with when.

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Our take on the Humsienk 12V 200Ah Plus LiFePO4 Battery

The Humsienk 12V 200Ah Plus is a lithium iron phosphate (LiFePO4) deep-cycle battery rated at 2,560Wh, with a 200A battery management system and IP65 water resistance. It is built for off-grid solar, RV and marine house banks, and can be wired in series and parallel up to a 4S4P bank of about 40.96kWh. Its best new price is $322.99 at eBay as of November 5, 2026, with 2 stores listing it new.

Best forOff-grid solar and cabin power banksRV and van house batteriesTrolling motor and marine useDIY 48V battery bank builders
Pros
  • 2,560Wh from a single 12V battery
  • 200A BMS allows high continuous draw
  • IP65 rated for damp marine and outdoor installs
  • Series and parallel expansion up to 4S4P
  • LiFePO4 chemistry is safer and longer-lived than lead-acid
Cons
  • Heavy at about 26.4 kg, awkward to move alone
  • Needs a LiFePO4-compatible charger and low-temp care
  • Series-parallel banks require matched batteries and careful balancing
  • Only 2 new listings, so price competition is thin

Humsienk 12V 200Ah Plus LiFePO4 Battery prices at every store

  • eBayNew

    In stockSold by humsienk_us

    $500.00Free shippingObserved at 7:37 PM
    Visit store
  • WalmartNew

    Out of stockSold by HumsiENK

    $349.99Free shippingObserved at 7:37 PM
    Visit store

Also available at

  • eBayCheck price at eBay

Humsienk 12V 200Ah Plus LiFePO4 Battery price history

Lowest price we've seen: $349.99 on Nov 6 at Walmart. Tracked across 2 stores since Nov 6.

Specifications

Size
L521 × W238 ×H 221 mm / Weight：26.4 kg
Massive 2560Wh Capacity
Over 24 hours of runtime, easily powering high-demand appliances
Expandable 4S4P System
Up to 40.96kWh energy capacity and 51.2kW output power
Weight
31 Kg 31 Kg 50 Kg 43.75 KgSource
BMS
200A 200A 100A 100ASource
Output Power
2560W 2560W 5120W 5120WSource
IP Rating
IP65 IP65 IP65 IP20Source

Questions and answers

Is $322.99 a good price for this battery?
At $322.99 at eBay as of November 5, 2026, you pay about $0.13 per watt-hour, which is competitive for a 200Ah LiFePO4 battery with a 200A BMS and IP65 rating. Only 2 stores list it new, so compare both before buying.
Can I run a 2,000W inverter from it?
Yes. The 200A BMS supports roughly 2,560W of continuous output at 12V, so a 2,000W inverter is within range. Keep cable gauge and fuse sizing matched to the current draw.
Can I wire several together for 48V?
Yes. Up to four can go in series for 48V and up to four strings in parallel, for a 4S4P bank of about 40.96kWh. Use identical batteries, equal cable lengths and a balancer.
Is it safe for a boat or outdoor install?
The IP65 rating covers dust and water jets, which suits marine and outdoor enclosures. It is not meant for submersion, and charging below freezing should be avoided.
What charger do I need?
Use a LiFePO4-specific charger set to 14.2–14.6V absorption and about 13.5–13.8V float. A lead-acid profile can shorten the battery's life.
What is in the box?
Expect the battery itself; terminals and mounting hardware vary by seller, so confirm with the listing before ordering.
Where is the Humsienk 12V 200Ah Plus LiFePO4 Battery cheapest?
At eBay, for $500.00, as of our latest check.
Where can I buy the Humsienk 12V 200Ah Plus LiFePO4 Battery?
2 stores we checked sell it, including Walmart, eBay.

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