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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DEWALT 18/20V Max Vacuum, Wet/Dry (DCV581H)

Product ID: 745160974

Details

Brand
DEWALT
Filter type
HEPA Filter
Power source
Battery Corded
Special features
filter
Surface recommendation
All floors

🌀31 CFM max suction power

🔋Dual power: Corded & 18/20V MAX cordless

🦠HEPA filter traps 99.97% of dust

Description

🧹 Clean smarter, not harder — the cordless vacuum that means business.

BUILT TO LAST - Crush-resistant 5ft hose and durable design built for heavy-duty, professional use.
ECO SMART FILTER - Washable and reusable HEPA filter reduces waste and keeps performance peak with easy maintenance.
COMPACT PORTABLE - On-board storage for hose and accessories means you’re always ready to tackle messes on the go.
PRO GRADE FILTRATION - HEPA-rated filter captures 99.97% of microscopic dust and allergens, keeping your workspace pristine.
ULTIMATE FLEXIBILITY - Switch seamlessly between corded and cordless modes for uninterrupted cleaning anywhere.

The DEWALT DCV581H 18/20V MAX Wet/Dry Vacuum offers professional-grade cleaning with dual power options—corded or cordless via 18V/20V MAX batteries. Featuring a HEPA-rated filter that traps 99.97% of dust particles, a durable crush-resistant 5-foot hose, and a 2-gallon tank, it’s engineered for versatility and longevity. Compact with on-board storage and washable filters, it’s the perfect tool for millennial pros who demand efficiency and reliability in every cleanup.

Specifications

ASIN	B00DD1UQ3Y
Battery Description	Lithium-Ion
Best Sellers Rank	#36,047 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #85 in Wet-Dry Shop Vacuums
Brand	DEWALT
Brand Name	DEWALT
Capacity	2 gallons
Color	One Color
Connectivity Technology	Wireless
Control Method	Touch
Controller Type	Push Button
Customer Reviews	4.5 out of 5 stars 8,374 Reviews
Filter Type	HEPA Filter
Filter type	HEPA Filter
Finish Types	Brushed
Form Factor	Cannister
Global Trade Identification Number	00885911244848
Hose Length	5 Feet
Included Components	Crevice Tool, HEPA Filter, Nozzle
Indoor Outdoor Usage	Indoor
Is Product Cordless	Yes
Item Dimensions L x W x H	43.9L x 31.2W x 4.8H centimeters
Item Type Name	SHOP VAC
Item Weight	454 g
Manufacturer	Dewalt
Maximum Suction	31 Feet
Model Name	20VMAX WET/DRY VAC
Model Number	DCV581H
Noise Level	80 Decibels
Number of Handles	1
Number of Items	1
Number of Power Levels	2
Other Special Features of the Product	Washable/reusable filter
Portable	Yes
Power Source	Battery Powered, Corded Electric
Power source	Battery Powered , Corded Electric
Recommended Uses For Product	Hard Floor, Bare Floor, Garage
Series Number	581
Special features	Washable/reusable filter
Style Name	Vacuum
Surface Recommendation	All floors
Surface recommendation	All floors
UPC	885911244848
Unit Count	1 Count
Voltage	20 Volts
Wattage	200 watts

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