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🔋 Stay Powered, Stay Ahead — Never Miss a Beat with MaySpare's 500 AMP Battery Isolator!
The MaySpare 500 AMP Battery Isolator Relay is a robust 12V DC solenoid designed for dual-battery systems, offering 80A continuous and 500A surge current capacity. Featuring copper-silver contacts and a 100,000-cycle mechanical lifespan, it ensures reliable, long-lasting performance. The package includes all necessary terminals and insulated caps for easy installation, making it an essential upgrade for professional-grade automotive and power setups.
| ASIN | B07MV4WJ7K |
| Best Sellers Rank | #39,286 in Automotive ( See Top 100 in Automotive ) #10 in Automotive Replacement Starter Solenoids |
| Brand | MaySpare |
| Coil Resistance | 18 Ohms |
| Coil Voltage | 12 Volts |
| Connector Type | Screw |
| Contact Current Rating | 80 Amps |
| Contact Material | Copper Silver |
| Contact Type | Normally Open |
| Current Rating | 80 Amps |
| Date First Available | January 15, 2019 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 8.1 ounces |
| Item model number | US-4t500A |
| Manufacturer | May Spare Parts |
| Maximum Switching Current | 1 Amps |
| Minimum Switching Voltage | 13 Volts (DC) |
| Mounting Type | Screw Mount |
| Operation Mode | Continuous Duty |
| Package Dimensions | 3.62 x 3.11 x 2.99 inches |
| Specification Met | OEM |
| UPC | 754111153130 |
| Upper Temperature Rating | 80 Degrees Celsius |
| Wattage | 2000 watts |
A**R
good value for the money
works as described
D**N
Works great
Works great
J**K
Great quality product
Great product
B**R
Good product
Came quickly and same dimensions as OEM.
P**X
Cheap
Don't last
D**D
Work for glowplugs
Worked for 1984 ranger 2.2 diesel
T**R
Direct replacement
This replaced a similar relay in my 2000 Ford E-350-based motor home as a battery isolator. It is dimensionally identical to the failed White-Rogers unit it replaced, and only different in that it has a separate terminal for a ground wire connector, whereas the OEM unit was grounded through its frame.
B**H
Runs Hot - Not Continuous Use
I had to return it. After receiving the product I read a couple of the poor reviews. I decided to test the relay prior to installing it on my boat. Thank goodness I did. 15 minutes of use without a load I measured an exterior temperature of 170°. This product should not be used for continuous use as described. Be careful using this relay!!
P**G
Has so far worked just fine.
C**N
Works great but connectors rusted up over time and could not remove nuts to change wire, had to buy a new one because the bolt twisted loose while trying to remove nut. I suggest some grease to protect from corrosion if putting this on a vehicle.
A**X
Works great. It comes with positive and negative post to activate. The location where it is in my unit is all rusted so I did a plastic lining and required to run ground cable to the unit.
M**.
Permet de charger la batterie de mon vr via l'alternateur du camion. L'original ne fonctionnait plus à cause de la corrosion. Je n'ai pas essayé de démarré le moteur avec la batterie du vr, donc je n'ai aucune idée s'il peut suporter l'amperage surtout en température froide.
C**Y
The item arrived on time and as decribed.
Trustpilot
1 week ago
2 weeks ago