Bought mainly for cordless car and house clean up but the small non-QR 20v batteries only last 5-7 minutes. Can it work longer on any battery?

I am re-answering this question. BUY THIS VACUUM CLEANER. I do NOT work for nor am I affiliated with DeWalt in ANY way (other than buying the product). If your battery only lasts 5 - 7 minutes then throw away your garbage battery. You need to use a REAL battery (3 mAh or greater).

Can i use the 18v XRP or or 18v li-on batteries with DEWALT DCV581H

This is the DCV581H.... 20V/CORD OPERATION ONLY. The old model was the DCV580 which did also work with the old 18v batteries. This one does not.

Air flow: 33.55 CFMHP peak: 1.85 (per an external website) I don't usually see HP rating for a battery powered vacuum

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Description

🔧 Clean smarter, not harder — the cordless shop vac that keeps up with your hustle!

POWER YOUR WAY - Switch seamlessly between 20V MAX battery or AC outlet for ultimate jobsite flexibility.
HEAVY DUTY HOSE - 5 ft. crush-resistant, flexible hose built to withstand tough worksite conditions.
MASSIVE 2 GALLON TANK - Handle big messes without constant emptying—perfect for wet or dry debris.
ON THE GO CONVENIENCE - Integrated accessory storage and lightweight design make transport and setup a breeze.
EFFORTLESS FILTER CARE - Easily accessible HEPA filter rinses clean for long-lasting performance and less downtime.

The DEWALT DCV581H Shop Vacuum offers professional-grade wet and dry cleanup with dual power options—cordless 20V MAX battery or corded AC. Its 2-gallon capacity and heavy-duty 5 ft. hose tackle large debris effortlessly, while the washable HEPA filter ensures lasting performance. Designed for portability and convenience, it’s the ultimate tool for busy pros who demand flexibility and durability on the job.

Specifications

Brand	DEWALT
Special Feature	Portable
Filter Type	HEPA Filter
Included Components	5' Heavy-Duty Crush Resistant Hose (1-1/4" Diameter), Battery & Charger Sold Separately, Crevice Tool, Filter, Gore Wet/Dry HEPA Filter (DCV5801H), Wide Nozzle Tool Attachment
Is Cordless?	No
Capacity	2 Gallons
Wattage	200 watts
Hose Length	5 Feet
Recommended Uses For Product	Hard Floor, Bare Floor, Garage
Form Factor	Cannister
Color	Black, Yellow
Model Name	20VMAX WET/DRY VAC
Product Dimensions	17.3"L x 12.3"W x 1.9"H
Battery Description	Lithium-Ion
Noise Level	80 dB
Manufacturer	DEWALT
Number of Items	1
Controller Type	Push Button
Motor Horsepower	0.269 horsepower
Control Method	Touch
Style	Wet/Dry Vac Only
Connectivity Technology	Wireless
Portable	Yes
Number of Handles	1
Number of Power Levels	2
Series Number	581
Indoor/Outdoor Usage	Indoor
Finish Type	Brushed
Global Trade Identification Number	00885911244848
UPC	885911244848
Part Number	DCV581H
Item Weight	1 pounds
Item model number	DCV581H
Is Discontinued By Manufacturer	No
Size	One Size
Finish	Brushed
Material	Blend
Pattern	Solid
Shape	Rectangular
Volume	2 Liters
Horsepower	1.85
Item Package Quantity	1
Special Features	Portable
Usage	Dual action
Batteries Included?	No
Batteries Required?	Yes
Description Pile	Lithium-Ion
Warranty Description	3 years.

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