hey everyone, i was just wondering if there's a way to not use the batteries on this light that i have and use an adapter of some sort, or would i even need an adapter? I think it's an LED light that changes colour and i would like to keep it up permanently. I'm not sure what batteries it uses, but the back of them says LR44 button cell. Thanks in advance everyone!
how to not use the batteries in my light
Feb 27, 2007
7 Replies
How many batteries does it use? I think the LR44 is a 2V battery, so if it uses two LR44's you would need a 4V DC wallwart type of adapter, with a current of 100 milliamperes or more to power the light.
H. R. (Bob) Hofmann
Just popped in to the Radio Shack website. They sell a 300 milliamp regulated wallwart with switchable output voltage from 1.5 to 12 volts for $18 or so. Of course with those, you gotta be careful you don't accidentally switch it to a higher voltage than your device can tolerate.
Jerry
My local Dollar and More store sells those for $8. They also sell a 2.1 amp digital camera model (with specific voltages) for the same!
Also note that these are often not regulated. So, the actual output voltage at any given setting will depend significantly on the load. If being used to power s decive that expects a fixed voltage, start low while measuring the voltage and then work up grom there.
Or, get a regulated adapter.
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That's what I do. Start off low and crank it up until it works/charges.
.
"hr(bob) snipped-for-privacy@att.net" wrote in news: snipped-for-privacy@8g2000cwh.googlegroups.com:
LR44s are 1.5V. Those LED lights use THREE LR44s,for a total of 4.5v
Jim Yanik
jyanik
at
kua.net
Thanks for all the suggestions everyone! Yup it does use 3 LR44 batteries. I actually have some adapters lying around with adjustable voltage, do i just cut the wires, set the appropriate voltage, and attach the 2 ends to the + and - in the battery compartment with electrical tape? Would that be a waste though? Maybe i should go check out my local dollar store to see what they got. Sorry I don't usually do these types of stuff so it might not sound like i know what i'm doing, thanks again!
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