Nilight 90804A Battery Disconnect Switch, 350 A, 32V DC

The Nilight 90804A battery disconnect switch is a four-position selector for systems using two battery banks. Its 1-Both-2-Off settings can select either bank, combine them, or disconnect them, while the listing gives separate continuous, intermittent, and cranking current ratings.

At a glance

Four selector positions are described for choosing battery 1, battery 2, both banks, or off.
The listing specifies 350 A continuous, 600A for up to 5 minutes, and 1200A for up to 30 seconds, with a maximum operating voltage of 32V DC.
Manufacturer claims a make-before-break contact design for switching between banks without interrupting power.
The listing describes surface, front-panel, or rear-panel mounting options, but the technical details specifically list Surface Mount.

Price

$28.89Save 15%

Reference price: ~~$33.99~~

Price checked: Nov 14, 2026

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Pros and cons

Pros

The four-position selector provides separate-bank, combined-bank, and off settings in one switch.
Separate current ratings clarify the stated continuous and time-limited operating ranges.
The listing names marine, RV, off-road, and other vehicle applications.

Technical specifications

21 specifications

Identity and ratings
Brand	Nilight
Model	90804A
Operation mode	1-Both-2-Off
Number of positions	4
Continuous current rating	350 A
Intermittent current rating	600A for up to 5 minutes
Cranking/peak current rating	1200A for up to 30 seconds
Maximum operating voltage	32V DC

Electrical and mounting details
Contact type	Normally Open
Connector type	Crimp
Terminal	Screw
Circuit type	2-way
Mounting type listed	Surface Mount
Dimensions listed	5 x 2 x 2 inches

Materials and protection
Material listed	Acrylonitrile Butadiene Styrene
Contact material	Copper
International protection rating	IP00
Specification met	CE
Upper temperature rating	176 °F

Compatibility claims
Compatible vehicle types	marine boat car rv truck
Compatible devices	marine yachts, RVs, motorhomes, travel trailers, 4x4 off-road trucks, modified vehicles, and ATVs/UTVs

What to know before buying

The listing says to shut down the engine and all power loads before moving the switch, warning that switching with the engine running can cause voltage spikes and damage the alternator.

Listing details to confirm

Mounting claims are not fully aligned: the feature text lists surface, front-panel, and rear-panel options, while the technical field lists only Surface Mount. The connector is described as Crimp, while the terminal is Screw. The details give the contact material as Copper, while the feature text specifies tinned copper studs. Confirm the mounting and connection arrangement for the intended installation.

What’s in the box

Battery disconnect switchIncluded
4 heavy-duty mounting screwsCheck selected pack

Check which accessories are included in your selected pack before buying.

Who is it for?

A good fit for

Owners of a two-battery vehicle or boat system who want selectable battery 1, battery 2, both, and off positions.
Installations whose required voltage and current ratings fit the listing's stated limits and operating durations.

Less suited to

Buyers who need a confirmed waterproof or dust-resistant switch. The listed protection rating is IP00.
Anyone intending to change switch positions while the engine or connected loads are running.

Nilight 90804A Battery Disconnect Switch, 350 A, 32V DC · photo 2 — Additional product photo 2

Customer reviews on Amazon

5 / 5 · 1 ratings

5 stars100%100%
4 stars0%0%
3 stars0%0%
2 stars0%0%
1 star0%0%

The supplied rating is entirely five-star but comes from a single rating, so it offers very limited evidence about reliability or customer experience. No written customer feedback is provided. Buyers should assess compatibility and the stated installation cautions directly rather than treating the rating as confirmation of performance.

Frequently asked questions

What do the 1-Both-2-Off positions do?

The listing describes selecting battery 1, battery 2, both banks together, or off.

What are the current ratings?

The stated ratings are 350 A continuous, 600A for up to 5 minutes, and 1200A for up to 30 seconds. The maximum operating voltage is 32V DC.

Can the switch be moved while the engine is running?

The listing says to shut down the engine and all power loads before changing positions, warning that switching while the engine is running can cause voltage spikes and alternator damage.

Is the switch waterproof?

Waterproofing is not established by the supplied details. The listed protection rating is IP00, so do not treat the switch as water-resistant based on these claims.