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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Laser Level 360 Self Leveling, Rechargeable 3D High Brightness Green Laser 3x360° Best Laser Leveler Tool for Construction and Picture Hanging, Strong Magnetic Bracket & Hard Suitcase -B03CG

Product ID: 179975722

Details

Brand
Huepar
Color
Green Pro
Item Weight
3.61 Pounds
Material
ABS+TPU
Style
B03CG

📏±1/9 inch accuracy at 33ft

🔋5200mAh battery, 8h runtime

🟢3x360° high-brightness green lasers

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€ 267.84

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Sold byAmazon CyprusDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🛠️ Level Up Your Game with 360° Precision and Power!

UNSTOPPABLE POWER PLAY - 5200mAh rechargeable battery fuels up to 8 hours of continuous, high-brightness laser work—no downtime, no excuses.
360 VISIONARY COVERAGE - Three full 360° laser planes cover every angle—horizontal and vertical—so you never miss a line.
SMART MODES FOR SMART PROS - Switch effortlessly between self-leveling, manual, and pulse modes to conquer any environment, indoors or out.
BUILT FOR THE BOLD RUGGED - IP54 waterproof, dustproof, and drop-resistant with a tough TPR grip and hard carry case—ready for any job site challenge.
PRECISION THAT COMMANDS RESPECT - Achieve pinpoint accuracy within ±1/9 inch at 33 feet—because your projects deserve perfection.

The Huepar B03CG Pro Laser Level delivers professional-grade accuracy with three 360° green laser planes, rechargeable 5200mAh battery offering up to 8 hours runtime, and robust IP54-rated durability. Designed for construction pros and precision enthusiasts, it features versatile self-leveling and manual modes, pulse mode for extended range, and a magnetic pivoting base—all packed in a rugged hard case for ultimate portability and protection.

Specifications

ASIN	B081YYWYBC
Best Sellers Rank	#7,032 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #11 in Line Lasers
Brand Name	Huepar
Color	Green Beam-b03cg Pro
Customer Reviews	4.5 4.5 out of 5 stars (2,251)
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
Item Type Name	3 x 360° Self Leveling Green High Brightness Cross Line Laser Level
Item Weight	3.61 Pounds
Level Measurement Type	laser
Level Measurement Units	feet, inch
Manufacturer	Leiwotec
Manufacturer Part Number	B03CG-2
Material Type	ABS+TPU
Model Number	B03CG 3D Laser Level
Operation Mode	Self-Leveling, Manual Leveling, Pulse Mode
Style Name	B03CG
Unit Count	1.0 Count

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