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MVL Lester Electrical 04127S Ammeter P11737640MVL-LES04127S https://cdnimages.opentip.com/full/MVL/MVL-LES04127S.jpg Lester Electrical 04127S Ammeter Manufacturer Part Number: 04127SAMMETER More Information Customer Sku LES04127S Customer SKU 62404127S Weight 0.150000 11737640 0.1800lbs 0.00 0.00 0.00
Lester Electrical
38.2800 2027-01-07 17 In Stock
customer review - by , December 12, 2025
5/ 5stars
Easy to install, added second meter for other voltage battery. Not happy with display on new meter. 2 year old meter looks better. I see it the same as my camera does.
customer review - by , December 12, 2025
5/ 5stars
SIMPLE to wire! My only NEGATIVE CONCERN is that the connection-block on the meter; has the positive and negative terminals NEXT to each other., meaning that if either power-wire came loose, they would SHORT! Suggestion: place an in-line 0.25 A fuse in the positive power wire, powering your meters.
customer review - by , November 11, 2025
5/ 5stars
I had a screen that was very dim, you had to look at it for 10-15 seconds to read the meter. Seller replaced it fast. Thanks Would recomend working with him.
customer review - by , July 7, 2025
5/ 5stars
Me ayuda a monitorear el voltaje de mis acumuladores.
customer review - by , June 6, 2025
4/ 5stars
The item is a part of my small sole charging system. It was a good value for the price.
customer review - by , April 4, 2025
4/ 5stars
It was a lot of work to wire this thing up. Do yourself a favor and buy the proper length of this: 20 Gauge 4 Conductor Electrical Wire Oxygen-Free Copper Cable 25FT/7.7M Flexible Low Voltage Cable for LED Strips Lamps Lighting Residential Wiring Car Circuit (20/4AWG-25FT) I bought 25 feet to wire from my entertainment console to the battery on my 21-foot travel trailer. It will save you a bunch of $$ and the labor of routing a bunch of individual wires. I only used 3 conductors because I had 12v DC at my power inverter where I mounted it. It immediately powered up and gave proper readings. I monitored current draw as I turned on lights and started appliances. It seems to track current draw accurately. Programing is easy by following instructions. Time will tell if it's reliable, but for now, I'm loving it.
customer review - by , March 3, 2025
5/ 5stars
Figured I'd save someone the grief of finding out the hard way what I did. You cannot back-feed charging current through this, it will stop working forever. Until that little oops it seems like a nice unit. It was easy to install, and the size is perfect for what I needed. It would have been nice if this warning had been in the instructions somewhere though, I would have wired it differently.
customer review - by , March 3, 2025
5/ 5stars
Measured 28 or so amps from solar panels with clamp meter and this meter read 18 or so amps, double check hookup several times, volts seem to be right.
customer review - by , March 3, 2025
5/ 5stars
Works, would be better if it were water proof. I use it on my RV batteries located on the outside of the RV.
customer review - by , March 3, 2025
5/ 5stars
What I use for battery capacity tests on YT. Works great. Accurate. No complaints. Good value.

Lester Electrical 04127S Ammeter

stars Rating 4.5 | 69 reviews
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SKU: MVL-LES04127S
Price:
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Quantity:
17 In Stock
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Product Description

Manufacturer Part Number: 04127S

AMMETER

warning tips WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to www.p65warnings.ca.gov.

Product Warranty

This item has 60 days warranty.
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Customer Reviews
By James Sanborn
Date: December 12, 2025
Easy to install, added second meter for other voltage battery. Not happy with display on new meter. 2 year old meter looks better. I see it the same as my camera does.
Rating: 5 stars [5 of 5 Stars!]
By spot light
Date: December 04, 2025
SIMPLE to wire! My only NEGATIVE CONCERN is that the connection-block on the meter; has the positive and negative terminals NEXT to each other., meaning that if either power-wire came loose, they would SHORT! Suggestion: place an in-line 0.25 A fuse in the positive power wire, powering your meters.
Rating: 5 stars [5 of 5 Stars!]
By Wayne
Date: November 15, 2025
I had a screen that was very dim, you had to look at it for 10-15 seconds to read the meter. Seller replaced it fast. Thanks Would recomend working with him.
Rating: 5 stars [5 of 5 Stars!]
By Jose Luis Garcia Villalona
Date: July 03, 2025
Me ayuda a monitorear el voltaje de mis acumuladores.
Rating: 5 stars [5 of 5 Stars!]
By Roby
Date: June 08, 2025
The item is a part of my small sole charging system. It was a good value for the price.
Rating: 4 stars [4 of 5 Stars!]
By DonnE
Date: April 05, 2025
It was a lot of work to wire this thing up. Do yourself a favor and buy the proper length of this: 20 Gauge 4 Conductor Electrical Wire Oxygen-Free Copper Cable 25FT/7.7M Flexible Low Voltage Cable for LED Strips Lamps Lighting Residential Wiring Car Circuit (20/4AWG-25FT) I bought 25 feet to wire from my entertainment console to the battery on my 21-foot travel trailer. It will save you a bunch of $$ and the labor of routing a bunch of individual wires. I only used 3 conductors because I had 12v DC at my power inverter where I mounted it. It immediately powered up and gave proper readings. I monitored current draw as I turned on lights and started appliances. It seems to track current draw accurately. Programing is easy by following instructions. Time will tell if it's reliable, but for now, I'm loving it.
Rating: 4 stars [4 of 5 Stars!]
Items 1 - 6 of 65 reviews
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