Along with some other projects I was thinking....
Can you take out the battery section of an LED flashlight and run it off a 12V battery. PROVIDED you regulate the DC power supply from 12V to whatever the flashlight was originally intended for?
Why? Cause those special batteries are expensive as and last maybe an hour on full. I want to be able to spotlight all night.
So my plan is to buy a half decent flashlight with a decent LED and reflector. Remove the battery pack, so essentially I have a hollow tube and fit a DC-DC regulator to a normal 12V 7AH SLA battery and in theory, have 5hours run time.
You can buy some pretty simple DC-DC regulator circuit boards on eBay rated to 2A-3A max for next to nothing. Adjustable outputs too. Something like a switching step-down regulator here may work?
http://www.ebay.com/itm/AX3022-Base...ltDomain_0&hash=item19d4245cff#ht_3677wt_1159
Has anyone done this?
Can anyone see any problems with this?
Appreciate some input.
Can you take out the battery section of an LED flashlight and run it off a 12V battery. PROVIDED you regulate the DC power supply from 12V to whatever the flashlight was originally intended for?
Why? Cause those special batteries are expensive as and last maybe an hour on full. I want to be able to spotlight all night.
So my plan is to buy a half decent flashlight with a decent LED and reflector. Remove the battery pack, so essentially I have a hollow tube and fit a DC-DC regulator to a normal 12V 7AH SLA battery and in theory, have 5hours run time.
You can buy some pretty simple DC-DC regulator circuit boards on eBay rated to 2A-3A max for next to nothing. Adjustable outputs too. Something like a switching step-down regulator here may work?
http://www.ebay.com/itm/AX3022-Base...ltDomain_0&hash=item19d4245cff#ht_3677wt_1159
Has anyone done this?
Can anyone see any problems with this?
Appreciate some input.
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