Do you need a switch inline to prevent the voltmeter from being constantly on when vehicle not in use?

Yes, need one, usually connected to the car battery, but it is connected indirectly.

will this go to 16.5 volts ? Thank You

No it will not. This voltmeter monitors automotive battery voltage and anytime voltage is above 14.7 volts the indicator will blink and a buzzer will sound warning of voltage too high.

what is the mAmp drain ?

The current drain is not the problem. The problem is that they are utter junk. I had 3 sets of these all fail within a short time, in the same manner (died to show a constant 5.5v in a 12v system) - the original set, and two warranty replacement sets. I finally gave up on them, even as warranty replacements. Bought replacements from PowerWerx, and they've been going fine for over a year, with no discernible issues. Slightly more expensive, but you get what you pay for.

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Frienda 2 Pcs Battery Voltage Meter Waterproof Dc 12v LED Voltmeter Battery Monitor with Terminals Universal Round Tester with Blue Light for Car Motorcycle Boat

Frienda 2 Pcs Battery Voltage Meter Waterproof Dc 12v LED Voltmeter Battery Monitor with Terminals Universal Round Tester with Blue Light for Car Motorcycle Boat

Product ID: 338453346

Details

Brand
Frienda
Item Weight
1.92 ounces
Item dimensions L x W x H
5.31 x 3.54 x
Material
Acrylonitrile
Number of Items
2

💧IP65 waterproof for all-weather use

🔋Accurate 12V voltage readout ±0.1V

🚨Smart buzzer alarm for low voltage alert

13143 Ft

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Sold byAmazon HungaryDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔋 Power up your ride with precision and style — never get caught off guard again!

ALL WEATHER DURABILITY - IP65 waterproof and flame-retardant ABS housing ensures reliable performance rain or shine, on road or sea.
SLEEK BLUE LED DISPLAY - Modern, bright blue digital panel adds a tech-savvy vibe to your dashboard while keeping you informed at a glance.
UNIVERSAL COMPATIBILITY - Seamlessly fits cars, motorcycles, boats, RVs, and more — your go-to voltage monitor for every ride.
INTELLIGENT SAFETY ALERTS - Integrated buzzer alarm warns instantly when voltage drops below 11V, protecting your vehicle’s battery health.
PRECISION VOLTAGE MONITORING - Stay ahead with real-time, ultra-accurate battery voltage readings to avoid unexpected breakdowns.

The Frienda 2 Pcs Battery Voltage Meter is a compact, IP65 waterproof digital voltmeter designed for 12V vehicles including cars, motorcycles, and boats. Featuring a bright blue LED display, it provides precise voltage readings with ±0.1V accuracy and includes a smart buzzer alarm that activates when voltage falls below 11V. Built with flame-retardant ABS and reverse polarity protection, it ensures durability and safety in diverse environments, making it an essential tool for proactive battery monitoring.

Specifications

ASIN	B096XNHH5Y
Best Sellers Rank	#1,218,395 in Automotive ( See Top 100 in Automotive ) #319 in Automotive Voltmeter Gauges
Brand Name	Frienda
Customer Reviews	4.5 4.5 out of 5 stars (207)
Included Components	4 x Waterproof LED DC digital display voltmeters
Item Dimensions	5.31 x 3.54 x 1.57 inches
Item Weight	1.92 ounces
Manufacturer	Frienda
Material Type	Acrylonitrile Butadiene Styrene (ABS)
Number of Items	2
Part Number	CK-Frienda-11510
Unit Count	2 Count

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13143 Ft

Duties & taxes included

In stock

Sold byAmazon HungaryDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Hungary.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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