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Foursun
Foursun 12V 200Ah LiFePO4 Battery with Low-Temp BMS Protection

Foursun 12V 200Ah LiFePO4 Battery with Low-Temp BMS Protection

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$312.99at AmazonObserved at 7:36 PM

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Our take on the Foursun 12V 200Ah LiFePO4 Battery with Low-Temp BMS Protection

The Foursun 12V 200Ah is a lithium iron phosphate deep-cycle battery rated at 2,560 Wh and over 4,500 cycles, aimed at RV, solar and off-grid banks. Its built-in BMS adds low-temperature charge cutoff plus the usual overcharge, over-discharge and short-circuit protection. It can be wired in series or parallel to build larger 12V, 24V or 48V systems. At $197 at eBay as of November 5, 2026, it sits at the low end of what 200Ah LiFePO4 batteries typically cost.

Best forRV and van house batteriesSmall solar and off-grid storageTrolling motor and marine useCabin or shed backup power
Pros
  • 200Ah (2,560Wh) capacity in a single 12V case
  • Rated for over 4,500 charge cycles
  • Low-temperature charge protection in the BMS
  • Series and parallel wiring for 24V or 48V banks
  • $197 at eBay as of November 5, 2026 is cheap for this capacity
Cons
  • Lesser-known brand with a thin track record
  • No Bluetooth or app monitoring mentioned
  • BMS current limits cap how big an inverter it can feed
  • Cold-weather cutoff stops charging, so winter solar yield drops

Foursun 12V 200Ah LiFePO4 Battery with Low-Temp BMS Protection prices at every store

  • AmazonNew

    Availability unknown

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    $312.99Free shippingObserved at 7:36 PM
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  • eBayCheck price at eBay

Foursun 12V 200Ah LiFePO4 Battery with Low-Temp BMS Protection price history

Lowest price we've seen: $312.99 on Nov 6 at Amazon. Tracked across 1 store since Nov 6.

Specifications

Balanced Capacity
200 Ah (2560 Wh) for common mobile applications.
High Cycle Life
Also rated for over 4500 cycles.
Comprehensive BMS
Integrated management system with all relevant protective features.
Flexible Configuration
Supports series and parallel connections for system expansion.

Questions and answers

Is $197 a good price for a 200Ah LiFePO4 battery?
Yes. 200Ah LiFePO4 batteries commonly sell for well above $300, so $197 at eBay as of November 5, 2026 is near the bottom of the market. Two stores list it new, so compare both before buying.
Can I run it in series for 24V or 48V?
Foursun says it supports series and parallel connections, so four units can make a 48V 200Ah bank. Use identical batteries of the same age and charge them fully before wiring.
What does the low-temp BMS protection do?
It blocks charging when the cells get near freezing, which prevents lithium plating damage. Discharging in cold weather still works, but charging waits until the battery warms up.
How many cycles will it last?
Foursun rates it at over 4,500 cycles. At one full cycle a day that is roughly 12 years, though real life depends on depth of discharge and temperature.
What size inverter can it power?
A 200Ah 12V battery gives about 2,560Wh, enough for a 1,000–2,000W inverter for short runs. Check the BMS continuous current rating before sizing a large inverter.
What comes in the box?
Expect the battery itself, typically with bolt-on terminals. Chargers, mounting hardware and cables are usually sold separately, so confirm with the seller.
Where is the Foursun 12V 200Ah LiFePO4 Battery with Low-Temp BMS Protection cheapest?
At Amazon, for $312.99, as of our latest check.
Where can I buy the Foursun 12V 200Ah LiFePO4 Battery with Low-Temp BMS Protection?
2 stores we checked sell it, including Amazon, eBay.

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Buying guides that pick the Foursun 12V 200Ah LiFePO4 Battery with Low-Temp BMS Protection

  • Best 12V LiFePO4 deep cycle batteries for RV, solar and trolling motor use