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⚡ Power your dual-battery system with unstoppable reliability!
The MaySpare 80-Amp 12V Continuous Duty Solenoid Battery Isolator and Starter Relay is a robust, high-performance electrical switch designed for dual battery management. Featuring an 80A continuous current rating, 500A surge capacity, and a remarkable 100,000 mechanical cycle lifespan, it ensures dependable operation in demanding automotive and power applications. Constructed with copper contacts and silver pins for optimal conductivity, it comes complete with installation hardware for seamless integration.
| ASIN | B07MV4WJ7K |
| Best Sellers Rank | #39,935 in Automotive ( See Top 100 in Automotive ) #18 in Automotive Replacement Starter Solenoids |
| Brand | MaySpare |
| Brand Name | 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 |
| Customer Reviews | 4.4 out of 5 stars 465 Reviews |
| Manufacturer | May Spare Parts |
| Maximum Switching Current | 1 Amps |
| Minimum Switching Voltage | 13 Volts (DC) |
| Model | US-4t500A |
| Mounting Type | Screw Mount |
| Operation Mode | Continuous Duty |
| Part Interchange Info | SGP38,6C017,120-901,120-105751,120-105751-6,120-901S1 |
| Part Number | US-4t500A |
| 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
B**R
Good product
Came quickly and same dimensions as OEM.
J**K
Great quality product
Great product
P**X
Cheap
Don't last
D**D
Work for glowplugs
Worked for 1984 ranger 2.2 diesel
J**R
Definitely not for continuous duty
Might work as an intermittent solenoid, but it’s definitely not for continuous duty. I tested it with no load, after 15 minutes it was so hot you couldn’t pick it up. Boxed them back up and sent them back to China.
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.
P**G
Good value
Has so far worked just fine.
C**N
corrosion of connectors
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
This unit comes with positive and negative post
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**.
Exactement
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
On time as advertised.
The item arrived on time and as decribed.
Trustpilot
3 weeks ago
2 months ago