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12V 400Ah LiFePO4 Battery Built-in 200A BMS | 5120Wh Rechargeable Lithium Iron Phosphate Battery 15000+ Cycles for RV Solar Off-Grid ,Home Energy Storage
✅ In stock
📉 Price recently dropped
C
Grade
Analysis Confidence
59%
⚠️ Price may have changed. Last updated 24+ hours ago — confirm on Amazon.
Check Deal at Amazon
Price verified Aug 4, 2026 4:39 AM · Prices & availability subject to change
Is This a Good Price on Amazon?
🙂 Fair Price- 🙂Verdict: Fair Price. Small discount vs history. Consider waiting for a better drop.
- 🏷️The retail sticker price has been slashed by 45% — a steep markdown from the official listing.
- 📉This is the most affordable price seen in roughly three months — a solid near-term opportunity.
- 📈The direction is downward at the moment; if that holds, an even better price may surface — though timing the market is never certain.
How We Scored This Deal
Price Competitiveness
12.39/28
Recent Value
0/22
Market Standing
15.97/20
Deal Strength
7/20
Momentum
10/10
📝 Product Overview
🏪 Sold by
Dumfume-US
🚚 Shipping
Free Shipping
Product Details
✓The lithium iron phosphate (LiFePO4) battery adopts Grade A cells: The 12V 400Ah lithium iron phosphate (LiFePO4) battery boasts exceptional quality, enabling 4,000 to 15,000 charge-discharge cycles (with 10 years lifespan), far surpassing the 300–500 cycles (and only 3-year lifespan) of lead-acid batteries. Our 12V 400Ah lithium battery weighs just 86.2 pounds, which is only 1/3 the weight of an equivalent-capacity lead-acid battery.
✓200A BMS Comprehensive Protection：The 12V 400Ah LiFePO4 battery Built-in 200A BMS safeguards against overcharge, over-discharge, overcurrent, and short circuits. Advanced temperature control automatically cuts off charging/discharging in extreme heat/cold. Combined with low self-discharge (<3% monthly), this ensures safety and extends battery life in harsh conditions.
✓Expandable Energy System：Our 400ah lifepo4 battery Can Connect 4 units via 4S4P configuration for 51.2V 1600Ah (81.92 kWh) capacity, supporting 48V solar inverters and whole-home backup. Low self-discharge ensures readiness for seasonal use.Battery performance requires temperatures of 5°C or higher. Please verify suitability before purchase. Return shipping for low-temperature charging issues is not covered.
✓12V 400Ah Lithium iron phosphate battery dimension is: 20.87×10.43×8.66inch(with handle), weighs 82.67lbs. Note：Under Various Temp/Humidity Measurement Methods And Instruments, Voltage And Current May Deviate By 1%~5%. Charge/Discharge Battery Once Every 6 Months To Prevent Damage From Disuse.Please Feel Free To Contact Us If You Encounter Any Problems During Use!
✓Wide Application: Our 12V 400Ah LiFePO4 battery is ideal for RVs, camping, solar home systems, Outdoor Lighting, and off-grid applications. Additionally, the battery casing features IP65-rated waterproof protection, and the built-in side handles allow for easy portability—no worries about indoor or outdoor installation. This battery supports 100% SOC (State of Charge) & DOD (Depth of Discharge), delivering significantly extended lifespan compared to traditional lead-acid batteries.
⚙️ Specifications
Brand
dumfume
Voltage
12.8 volts
Item Weight
37.5 kg
Manufacturer
dumfume
Item model number
12v 400ah
Manufacturer Part Number
S95378-PRO
ASIN
B0FK5732FP
Customer Reviews
4.5
Best Sellers Rank
See Top 100 in Health & Household
Date First Available
July 28, 2025
Size
12V400AH(20.87×10.43×8.66)
