Is there a way to confirm it's v2 with sine wave and not v1?

In the description on my order it is listed as V2. On a scope, with the meter open circuit, the test waveform is a rounded square wave. When connected to a 100 ohm resistor, the waveform is more of a triangle wave. When connected to a capacitor, it is somewhere between a triangle and a sine wave.

can this meter perform a leak test on motor start capacitors?

No. This meter is for one test only - ESR of a capacitor. It does not perform any other tests.

Values in 35v and higher columns decrease as you go down, columns for 10,16,25v decrease, then go back up. is this a typo? hint: look for ".12"

Better to use on of the ESR charts you can find online, not the one printed on the case (whether it's right or wrong)

what is better about v2 (version 2) of this MESR-100 meter for the extra $10 it costs over the original version?

Compare MESR100 old V1 and new V2 Improvement: For an extra $10 I would get version 2 which is what I have now. 1) Change square wave to sine wave 100 KHz, reduce square wave’s high frequency component, and affect the reading passing the test leads and capacitor. 2) Higher Resolution up to 0.001 ohm. 3) 128X64 dot matrix LCD, with more larger value display and information 4) Embedded 25V capacitor table at LCD, auto display the capacitor is good or bad reference to common 25V electrolytic capacitor. 5) New plastic case, curve design for hand carrying. New stand for 60 degree stand on desk. 6) Use 2X AA battery, more convenience and longer battery life than 9V battery. 7) Support external USB power, using standard micro-USB port.

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Signstek MESR-100 V2 Auto Ranging in Circuit ESR LCR Meter Capacitor/Low Ohm Meter Up to 0.01 to 100R, Support in Circuit Testing

Product ID: 316491826

Details

Brand
Signstek
Colour
black
Item weight
0.5 Pounds
Power source
Battery
Style
Modern

⚡100kHz sine wave test signal

📊0.001Ω high resolution

🔋80+ hours battery life

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Sold byAmazon SenegalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔧 Diagnose like a pro, fix with confidence — never miss a faulty cap again!

NEXT LEVEL ACCURACY - High resolution down to 0.001Ω ensures reliable ESR readings for confident repairs.
POWER YOUR WORKFLOW - Runs on 2 AA batteries or USB power for extended, hassle-free use on the go.
ERGONOMIC PORTABLE - Sleek curved case with a 60° desk stand designed for comfort and convenience.
CRYSTAL CLEAR DISPLAY - 128x64 dot matrix LCD shows large, easy-to-read values and capacitor health status.
PRECISION IN CIRCUIT TESTING - Detect bad capacitors without desoldering using ultra-low 15mV test voltage.

The Signstek MESR-100 V2 is a professional-grade ESR LCR meter designed for in-circuit capacitor testing. Utilizing a 100kHz sine wave signal, it accurately measures equivalent series resistance (ESR) with a resolution as fine as 0.001Ω. Its low test voltage (<15mV) prevents semiconductor activation, enabling safe, non-destructive diagnostics on TV, LCD, and audio boards. Featuring a large 128x64 dot matrix LCD with embedded capacitor health references, it supports both battery and USB power for extended field use. Ideal for electronics repair professionals seeking fast, reliable capacitor condition assessment without desoldering.

Specifications

ASIN	B00GYSFOM6
ASIN	B00GYSFOM6
Best Sellers Rank	#102,355 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #10 in Ohmmeters
Brand Name	Signstek
Color	black
Customer Reviews	4.4 4.4 out of 5 stars (680)
Customer reviews	4.4 4.4 out of 5 stars (680)
Date First Available	4 March 2015
Is Discontinued By Manufacturer	No
Item Weight	0.5 Pounds
Item model number	US-171024-02
Manufacturer	Signstek
Manufacturer	Signstek
Maximum Operating Voltage	100 Volts
Measurement Type	LCR Meter
Minimum Operating Voltage	15 Millivolts
Model	US-171024-02
Package Dimensions	16.89 x 9.5 x 4.9 cm; 226.8 g
Part Number	US-171024-02
Power Source	Battery Powered
Specification Met	IEC 61010-1
Style Name	Modern
UPC	710219731090
Unit Count	1 Count

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