Does this meter handle run/start capacitors in hvac work?

Yes this meter and Fluke 324 check capacitance, but the Fluke 324 will NOT check Max amperage nor starting amperage of an air conditioning compressor like this meter does. The Fluke 325 does but is almost $300.

How small of DC current can this measure? 5mA and lower?

I'm afraid not. According to the instruction manual, in the lowest DC current range (60.00A) the resolution is 10mA. The accuracy is +/-(2.0% + 8 digits).

Unfortunately Klein has outsourced its electronics. The multi meters are made in China. Most hand tools are still made in USA. They are tested and approved by ETI for distribution in America. But I am very disappointed in Klein.

With the clamp you can measure amps in DC. and up to how many amps maximum. for automotive mechanics

Maybe this is an updated version of the CL900 but the meter and specs say up to 2000 amps AC and up to 2000 amps DC using the clamp.

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Description

⚡ Clamp, Measure, Conquer — The Ultimate Pro’s Power Tool

BUILT FOR THE GRIND - IP40-rated durability and 6.6-foot drop protection mean this tool thrives where others fail—engineered for the relentless pace of professional electricians.
PRECISION MEETS POWER - Auto-ranging TRMS tech delivers pinpoint AC/DC voltage and current measurements up to 1000V—never second-guess your data again.
VERSATILITY ON DEMAND - Clamp meter plus test leads cover everything from capacitance and frequency to temperature and NCVT detection—your all-in-one jobsite companion.
WORK SMARTER HANDS FREE - Integrated worklight, side test lead holder, and optional magnetic hanger keep your hands free and your workflow uninterrupted—because multitasking is a must.
SEE CLEARLY EVEN IN THE DARK - Backlit 6000-count LCD ensures crystal-clear readings in dim environments—never miss a detail when it matters most.

The KLEIN TOOLS CL800 Digital Clamp Meter is a rugged, professional-grade electrical tester featuring auto-ranging TRMS technology for accurate AC/DC voltage and current measurements up to 1000V. It combines versatile functions including low impedance mode, capacitance, frequency, temperature, and NCVT detection with jobsite-ready durability (IP40, 6.6 ft drop protection). Enhanced by a backlit LCD, integrated worklight, and hands-free accessories, it’s designed to boost efficiency and precision for electricians and technicians who demand reliability and performance.

Specifications

Brand	KLEIN TOOLS
Power Source	Battery Powered
Style	600A AC/DC Current
Color	Multi
Item Weight	12.5 Ounces
Item dimensions L x W x H	9.09 x 3.82 x 1.54 inches
Min. Operating Voltage	9 Volts
Specification Met	Meets Relevant Industry Standards
Upper Temperature Rating	60 Degrees Celsius
Maximum Operating Voltage	1000 Volts
UPC	092644690167
Manufacturer	Klein Tools
Global Trade Identification Number	00092644690167
Part Number	CL800
Item Weight	12.5 ounces
Product Dimensions	9.09 x 3.82 x 1.54 inches
Item model number	CL800
Batteries	2 AAA batteries required. (included)
Is Discontinued By Manufacturer	No
Size	Temperature, Capacitance, Frequency/DC Current, Low Impedance
Finish	Brushed
Material	Blend
Pattern	Clamp Meter
Shape	Rectangular
Item Package Quantity	1
Number Of Pieces	1
Measurement Accuracy	‎Voltage Tester
Display Style	6000 Count LCD
Special Features	Features Low Battery Indicator and Auto Shut Off
Included Components	Carrying Case, 41'' (1041.4 mm) Test Leads, Thermocouple with Adapter, and Batteries
Batteries Included?	Yes
Batteries Required?	Yes
Battery Cell Type	Alkaline
Description Pile	2 x AAA

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