Is 48v nominal? Really more like 56v or more while charging 4 - 12v lead acid batteries in series?

Dear Addison,No. Please note that the working voltage of this switch is 12V-48V DC. Hope this will be helpful to your purchase.

Can you put two lines going out of the switch? I have two different bus bars and would like the on/off switch to turn both off at the same time.

No. Use a 1.2, both, off swihch. It is made to switch two batteries, but you can simply use it backwards to do what you want. https://www.amazon.com/Kohree-1-2-Both-Off-Disconnect-Vehicles-Waterproof/dp/B08MT19MS2/ref=sr_1_10?dchild=1&keywords=kohree+battery+switch&qid=1622817696&sr=8-10

Can you put the single on/off switch on two batteries in series? Just need to shut off both and turn back on both at the same time.

You could but don’t know why. If you want 12 v and you have two 6v batteries in series to make 12v then the two 6v can be cabled together all the time and the switch is used to disconnect both batteries at once.

Can you remove the red knob itself?

Dear Harri,No, it can’t be removed. The red knob is for On/Off control. Hope this information can be helpful to your purchase. If you have any question, please feel free to contact us through sending us Amazon messages.

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Kohree Battery Disconnect Switch 12V, 12V-48V Battery Shut Off Kill Isolator- Waterproof Marine Cut Off Switch for RV, ATV, Car, Marine, Boat, with 4 Mounting Bolts, 275 Amps, On/Off

Kohree Battery Disconnect Switch 12V, 12V-48V Battery Shut Off Kill Isolator- Waterproof Marine Cut Off Switch for RV, ATV, Car, Marine, Boat, with 4 Mounting Bolts, 275 Amps, On/Off

Product ID: 170846217

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Details

Operation Mode
ON-OFF-ON
Current Rating
455 Amps
Operating Voltage
48 Volts
Contact Type
Normally Open
Connector Type
Screw in
Brand
Kohree

🌊Waterproof marine-grade design

🔋275A continuous power

🔧4 mounting bolts for secure fit

Description

🔋 Cut the power, not the adventure – stay charged, stay safe!

SAFETY FIRST - CE certified with insulated terminals and removable side plates to prevent shorts
POWER THAT LASTS - Handles up to 275A continuous current for heavy-duty performance
EFFORTLESS CONTROL - Clear On/Off color-coded labels for quick, intuitive switching even at night
BUILT FOR THE ELEMENTS - Waterproof ABS housing ensures reliable operation in marine and outdoor environments
UNIVERSAL COMPATIBILITY - Works seamlessly with 12-48V systems across RVs, ATVs, boats, and more

The Kohree Battery Disconnect Switch is a rugged, waterproof 12V-48V isolator designed for RVs, ATVs, boats, and cars. With a robust 275A continuous current rating, clear On/Off indicators, and secure mounting hardware, it prevents battery drain and electrical hazards while ensuring easy operation in any environment.

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