How can the shunt be connected from the negative side of the battery and the positive side of the motor as instructions indicate?

Btw, the posted answer that the shunt's main terminals can be connected via the engine's negative wires to the battery's negative post can have issues. If the alternator does have an independent negative wire (instead of grounding to the engine directly) then you could put the shunt in series with this negative wire. Do not wire the shunt from the engine itself (i.e. a grounding stud) to the negative post of the battery. If done this way, the heavy starting current (when cranking the engine) would flow through the shunt and that would be a big problem. Stick with wiring the shunt in series with the alternator's positive output wire.

This doesn't come with any instructions. how do i hook it up? how do i attach the shunt?

Well I will tell you how I hooked mine up. PositIve from battery to one side of shunt it does not matter what side and the other side goes to my inverter. Now the two screws on the shunt and the two studs on the back of the meter you need to have two smaller wires of equal lengths and hook up the meter to the shunt. Before you hook up the two little wires zero out your meter that little screw on front of meter turn it slow so the needle points to zero. Now hook up your two small wires. If you hook up wires wrong your needle will go backwards, just reverse them so the needle points to zero. Now my amp meter shows me how many amps I am pulling from my batteries- mike- fridge-exc. Hope it helped you.

Can this be used on a 48 volt battery system?

Yes it can. This meter measures current not volts.

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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BAOMAIN DH-670 DC 0-100A 75mV Analog Panel Amp Ammeter with Shunt | DC 0-100A 75mV panel ammeter with external shunt included. Class 2.0 accuracy with clear dial.

Product ID: 29935574

Details

Brand
Baomain
Item Weight
120 Grams
Item dimensions L x W x H
3.86 x 4.96 x
Material
Plastic
UPC
711811448553

⚡100A DC current range

📏Compact 70x60mm face size

🔧75mV precision shunt included

214 Lei

Duties & taxes included

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Sold byAmazon RomaniaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚡ Stay ahead with precision power insights!

DURABLE LIGHTWEIGHT - Robust plastic build weighing just 205g ensures longevity without bulk.
COMPACT SLEEK DESIGN - Fits seamlessly into any control panel with a slim 3.5cm depth and a clear 2.8x2.4 inch display.
FINE TUNE DIAL CONTROL - Easily calibrate readings with the built-in adjustment button for pinpoint accuracy.
TRUSTED BY PROFESSIONALS - Highly rated for marine and automotive use, delivering dependable performance every time.
PRECISION CURRENT MONITORING - Accurately measures DC current up to 100A for reliable system diagnostics.

The Baomain DH-670 is a high-precision analog ammeter designed to measure DC currents up to 100A. Featuring a compact 70x60mm display and a 75mV shunt for accurate readings, it offers easy calibration via a fine-tuning dial. Lightweight and durable, this panel meter is ideal for automotive and marine applications, trusted by professionals for reliable current monitoring.

Specifications

ASIN	B01FAVYELY
Best Sellers Rank	#203,458 in Automotive ( See Top 100 in Automotive ) #22 in Automotive Replacement Amp Meter Gauges
Brand	Baomain
Date First Available	May 7, 2016
Is Discontinued By Manufacturer	No
Item Weight	4.2 ounces
Item dimensions L x W x H	3.86 x 4.96 x 2.24 inches
Item model number	DH-670
Manufacturer	Baomain
Material	Plastic
Product Dimensions	3.86 x 4.96 x 2.24 inches
UPC	711811448553

Reviews

W**N

Quality meter

Worked perfectly for my project.

15.10.2025

V**C

Good value

For the money, the meter and it's shunt are of quite good quality and seem accurate when compared / checked with amp readings taken with good quality test ampere meter. I bought two to monitor twin marine engine alternators. All good.

8.02.2022

E**R

100 amps meter

26.12.2025

H**N

accurate and easy to install

Inexpensive, works great. Requires a box for mounting the meter.

19.03.2021

O**O

Medidor de I dc.

Me agrada la versatilidad, lo fácil de adaptar a cualquier case y lo fácil de armar. Buena exactitud. Muy útil. Recomendado. I like the versatility, how easy it is to adapt to any case and how easy it is to put together. Good accuracy. Very useful. Recommended.

2.06.2019

B**I

Works great

28.12.2024

W**R

Ridiculous that there is no reasonable way to mount the shunt provided.

There is no reasonable way to mount the shunt provided. It should be on an insulated mounting block provided with mounting screw holes, but it isn’t. Somebody saved $.25 in manufacture, and I will have to spend an hour jury-rigging a safe mount.

19.05.2022

J**.

Nice looking , inexpensive. No external power needed as with digital meters.

Very nice meter for the price . I think they should have included 2 24" inch wires needed to connect the shunt to the meter. No way for them to know the length needed for your application, but I could have tested the meters, I bought two, for accuracy.

2.07.2021

W**E

Works good

6.07.2019

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214 Lei

Duties & taxes included

In stock

Sold byAmazon RomaniaDelivered 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 Romania.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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