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Thanks for the info. I think I'll give the 670ma AC power supply a try. So in theory, the batteries will only receive 335ma after the diode blocks half the input?
Thanks. Just thought I'd post an update. I decided to buy another of these cordless vacuum cleaners that uses exactly the same 3.6 volt Ni-Cad battery and I noticed that the power supply with this one is 4.4 volts DC, not 9 volts AC like the previous one I bought.
The charging dock is exactly...
I connected up the 9 VAC 300ma transformer and left the vacuum cleaner charging for 8 hours. Works perfectly! The battery in the vacuum cleaner barely gets warm which is exactly what I was hoping for.
The instructions that came with the vacuum cleaner say that the original 500ma charger would...
I'll have to experiment with a few power supplies if the AC one doesn't work. I did notice that when I connected 2 x 1.5 volt AA batteries to the motor in series it would turn, albeit quite slowly, though when I tried connecting a 6 volt DC 1 amp power supply nothing really happened apart from a...
I think I'll give the 300ma power supply a try. If it doesn't recharge the battery then I'll try using it to directly power the motor. I never thought about using it as a corded vacuum!
Thanks for the replies. Yes, it's a Dustbuster :D
I feel a bit nervous about opening the psu as it's a sealed unit, though I've just found a 9 VAC 300ma power supply that might do the job. Do you think that 300ma will be enough and would the batteries explode or catch fire if left to charge for...
Hi. I've just bought an old handheld vacuum cleaner that uses a 9 VAC 5 watt power supply to recharge its built in 3.6 volt Ni-Cad battery. Trouble is the power supply was made for 110/120 volts mains power and I need a 220/240 volt power supply but can't find an 9 VAC anywhere, only DC power...
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