I cannot remove the nozzle from my dust buster VH781

You don't need an actual charger that says Dust Buster on it. You can use any charger of the same voltage from some other gadget. Most are 9 volt. Not all, but many are. Just look on the dust buster tag & see what it requires. Some stores like Radio Shack even sell the charger with several adapters..One sure to fit your Dust Buster. Good Luck. This is a pic of one that is $13 at Walmart.

Not sure if this will help
Black Decker DustBuster 14 4V Cordless Hand Vacuum Pep Boys

Yes if you can get one
http://www.ereplacementparts.com/black-and-decker-chv1560-dustbuster-parts-c-4167_8887_8894.html

Response by small6363 was right on target. All the reviews and comments I had read up to this point for my Dustbuster CHV9600 indicated the battery could not be replaced. I am so glad this link was here.I have ordered the part and will follow the other posters' cautions about reassembling the product. I could not be happier as I could not find the model anymore and it is my favorite purple color. Thanks again small6363. You are a life saver.

Sorry to say but the battery pack is 3/4 the price of a newer dust buster. The other solution is the have some one rebuild it. But I would buy a new one. Don't waste you time.

I am not certain about this specific battery, however, if many batteries are unused for a long period of time, they can not be rejuvenated.
Try the switch in each position for 24 hours and if there is no action, it is probably not worth repairing.
Gary

In most cases the battery has lugs on it that are part of the battery and it is difficult to find a battery that is a direct replacement.

Hi I know what you mean! My B&D dust buster used to do this too. The hi power boost means that it can only be used for a limited amount of time. Due to the age of the dust buster though its a sign that the battery is on its way out and regardless of whether or how long its been used or not used, batteries can lose power regardless.
Try to let the dust buster completely lose power and then charge it up for its initial burn in period of 14 hours. Also clean the connection metal strips or hole with a dry cotton bud incase there's any static or dust. Then see if it lasts longer. If the turbo mode or speed 2 is still short, then the battery is dying out.
I don't know where you are but in the UK its hard to get battery replacements for B&D products. You could check your local seller where you are if they have battery replacements but at the cost of current dustbusters it may make more economic sense to consider buying a new dustbuster.

http://geeksquad.fixya.com/ThreadView.aspx?prdid=0&thid=859375
Generic problem for all Vacuums
DUST BUSTER 7.2 POWER LASTS FOR
Posted by bettedxx on July 31, 2008
DUST BUSTER 7.2 -- POWER LASTS FOR UNDER ONE MINUTE??
Hello,
I would advise you to ALWAYS to FIRST UNPLUG YOUR VACUUM before beginning any service procedure. The problem that people have with dustbusters is that when they 1st get them they need to say train the dustbusters to extend the battery life, the process is simple – when you 1st buy the dustbuster then you charge it up the 1st time and then you turn it on and drain the battery down to nothing, and then recharge the dustbusters again, and by doing that you have a larger battery life and it will run longer – but dustbuster and vacuums like that do not tell you and when people buy the item they just turn it on for a minute or two and then the battery does not get a “memory” as per how long it should run. By doing this the dustbuster will last and run longer and will have fewer problems. So if you need further assistance, please feel free to contact your local vacuum cleaner dealer in your area or in the yellow pages, or contact the factory phone number or website to further assist you with your questions.
Thanks, Don the Vac Man
Go Ahead. Use Us.

http://www.geeksquad.fixya.com/ThreadView.aspx?prdid=0&thid=543675
Generic problem for all Vacuums
The dustbuster part of my
Posted by nrosener on Apr 25, 2008
The dustbuster part of my Electrolux pronto 2 in 1 keeps getting stuck. I cannot eject it out of the main piece in order to use it on its own.

Hello,
I would advise you to ALWAYS to FIRST UNPLUG YOUR VACUUM before beginning any service procedure.
Sorry you are having a problem, I would suggest that you take it to an Electrolux dealer or try you local vacuum cleaner dealer in your area, all it may need is a slight adjustment to the back of the dustbuster or the part that releases the Electrolux dustbuster, it may be to tight and would need and adjustment or replacement in order for the item to release properly. So If you need further assistance, please feel free to contact your local vacuum cleaner dealer in your area or in the yellow pages, or contact the factory phone number or website to further assist you with your questions.
http://electrolux.com Customer Service
Electrolux Home Care Products – North America
PO Box 3900 Peoria, IL 61612
1-800-896-9756
Thanks, Don – The Vac Man
Go Ahead. Use Us.