can it run on AC power? We need the unit be on all the time.

Yes if you plug the battery charger in to the unit, it will work.

Out of the box i charged the battery for over 8 hours. once i unplugged the unit it automatically turns off. what am i missing?

There is a plastic sticker over the battery terminals. You gave to pull this off for the battery to actually charge. The instructions do not mention this, and it’s not obvious. You need to open the battery compartment, remove the battery, remove the sticker, reinstall, THEN charge.

On my huepar b03cg, the battery compartment cover is sealed. how does it open? i am trying to pry it open with my fingers. does it need a screwdriver?

There’s a clip that holds the cover on. It’s a little finicky but you just need to pry it a little and the battery cover will open

Will the levels still work (self-level function) if the unit is placed upside down to be close to the floor?

I just tested it and it does not work upside-down. You could always measure down from the line when working near the floor.

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Description

🎯 Level Up Your Precision Game with Huepar’s 360° Laser Mastery!

ADAPTIVE LEVELING MODES - Seamlessly switch between self-leveling and manual modes with audible alerts for off-level conditions, giving you full control and confidence on any surface or angle.
PRECISION IN EVERY PLANE - Three 360° high-brightness green laser planes deliver unmatched accuracy within ±1/9 inch at 33 feet, ensuring flawless alignment for your projects.
POWER THROUGH YOUR WORKDAY - Equipped with a robust 5200mAh rechargeable battery and versatile Type-C charging, enjoy up to 8 hours of uninterrupted laser leveling—no downtime, just productivity.
BUILT TO ENDURE TRANSPORT - Rugged TPR rubber housing with 51-inch drop protection plus IP54 rating means this laser thrives in tough environments, all packed in a sleek hard carry case for on-the-go pros.
EXTENDED REACH WITH PULSE MODE - Activate pulse mode for enhanced visibility outdoors or large spaces, extending your working range up to 200 feet when paired with a Huepar receiver—never miss a line.

The Huepar Laser Level B03CG Pro offers professional-grade 3-plane 360° green laser lines with ±1/9 inch accuracy at 33 feet, powered by a long-lasting 5200mAh rechargeable battery. Featuring self-leveling and manual modes, pulse mode for extended outdoor range, and rugged IP54-rated durability, it’s designed for construction pros and meticulous picture hangers alike. Complete with a magnetic pivot base, target plate, and hard carry case, backed by a 5-year warranty and lifetime support.

Specifications

Brand	Huepar
Material	‎ABS+TPU
Color	Green Beam-b03cg Pro
Style	B03CG
Operation Mode	‎Self-Leveling, Manual Leveling, Pulse Mode
Manufacturer	Leiwotec
Part Number	B03CG-2
Item Weight	3.59 pounds
Package Dimensions	11.26 x 8.27 x 4.69 inches
Item model number	B03CG 3D Laser Level
Batteries	1 Lithium Ion batteries required.
Size	‎3x360°
Power Source	Battery Powered
Voltage	3.7 Volts
Wattage	19.24 Watt-hours
Special Features	green-line, self-leveling
Included Components	1 x Huepar B03CG Pro Laser Level, 1 x Rechargeable Lithium Battery 3.7V / 5200mAh, 1 x Type-C Power Cord, 1 x Power Adapter, 1 x 360° Magnetic Pivoting Base, 1 x Green Laser Target Plate, 1 x Multilingual User Manual, 1 x Hard Carry Case
Batteries Included?	No
Batteries Required?	No
Battery Cell Type	Lithium Ion

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