Fox ECS 4.14kWh HV Battery (Master)

Marsoni

M251S

$535.00

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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Exchange/Return Notes

We offer a 30-day return/exchange service after receiving.
Final sale items are not eligible for returns or exchanges.
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This product is great to have around in your car. This makes it easier for solving the problem of a flat tire. I mean! In my case! I rather use this method first instead of having to remove the tire and having to go through the spare tire dilema. For a temporary solution,this kit is perfect. And in some cases! It can serve as a permanent solution. This kit is great to have in your trunk. 👍🏻👍🏻👍🏻

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Reviewed in the United States on October 9, 2025

Verified Purchase

Mr. Jumps

Los Angeles, US

★★★★★ 5

Gets the job done.

Got 2 flats at the same time in freezing cold weather. Jack failed, but this product didn't.

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on April 11, 2026