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Fox ECS 4.14kWh HV Battery (Master)

Marsoni M251S
Sale price$535.00
Pay 4 payments of $133.75 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
Fox ECS 4.14kWh HV Battery (Master)Part No: FE HV ECM 4300 Storage Systems Li ion Battery Pack 4. 14kWh Capacity Scalable to 29. 03Wh 90% Depth of Discharge Wide Temperature Tolerance Easy Installation CAN RS485 Communication High Voltage Don't forget: You must register your install with Fox online to activate the 10 year product warranty, otherwise it's 5 years as standard. This battery requires a MINIMUM of 2 modules to work (Master + Slave), This battery can have a MAXIMUM of 7
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4.1 ★★★★★
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Carlos G
Belleville, US
★★★★★ 5
Recommended
Excellent quality, a synthetic mixture that I will no longer use another brand for my car. I removed a little noise that I had
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 30, 2025
B
Verified Purchase
beachboy
Alexandria, US
★★★★★ 5
Buy it !
I run this in our 2010 PT Cruiser Classic, you can hear the difference, pricey but worth it, will buy again.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 9, 2026
B
Verified Purchase
Briwurm de Mesa
Los Angeles, US
★★★★★ 5
Nice item
Great product thank you
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 23, 2026
J
Verified Purchase
Janeth B
Los Angeles, US
★★★★★ 5
Great
I recently used this motor oil for my car, and I’m very satisfied with the results. The engine runs smoother and quieter, and I noticed improved performance almost immediately. It provides excellent protection, especially during longer drives, and helps maintain steady engine temperature.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 8, 2025
G
Verified Purchase
Gustavo Gonzalez
Chelsea, US
★★★★★ 5
As expected it
Great brand, engine smoothness, value for money
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Reviewed in the United States on January 24, 2026

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