Drill Charger Timer

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Project by doncharles posted 1286 days ago 2218 views 17 times favorited 23 comments Add to Favorites Watch
Drill Charger Timer
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I designed this device to time the operation of the 120V AC battery charger for my battery powered drill. I found out the hard way that the battery chargers for these batteries run HOT. If left plugged in all the time, they will burn out. These type chargers run $40.00 to $70.00. Yes, it is true that this charger will cost $30.00 to $40.00, But, it will not burn out. The timer is a spring wound timer. The timer is basically a switch that will stay on for the time set. This switch (timer) will carry an electrical load up to 1HP (745.6 Watts). I have never had a timer go bad, but if it did you can replace it for $20.00 or less. The battery charger for my 19V craftsman drill draws 65 watts.

If you send me your email address & you are a LJ & mention Timer I will email you, FREE, a PDF file that has easy to follow instructions to build this project.

NOTE: If you do not get your plans within one day, PLEASE send me another massage.

-- doncharles AKA Don

23 comments so far

View RonPeters's profile


708 posts in 1484 days

#1 posted 1286 days ago

I use the same setup to run an IR heater element and another for my glue pot. 1 hour is plenty of time to heat either. If I forget to turn it off, no problem…

-- “Once more unto the breach, dear friends...” Henry V - Act III, Scene I

View woody57's profile


645 posts in 2031 days

#2 posted 1286 days ago

that’s a great idea
why didn’t I think of that?

-- Emmett, from Georgia

View Mike Gager's profile

Mike Gager

615 posts in 1871 days

#3 posted 1286 days ago

dang thats a good idea! im always forgetting to unplug my chargers!

View Brad_Nailor's profile


2531 posts in 2561 days

#4 posted 1286 days ago

That is an ingenious idea to make battery charging safer. I have read quite a few articles about guys setting their houses on fire from battery chargers..especially these new Lithium Ion batteries. This is a great, mechanical, set it and forget it set up. Thanks for sharing.


View bigike's profile


4031 posts in 1892 days

#5 posted 1286 days ago

wow nice setup. Can you blog about how you made this little devise? I think it would help alot of LJers including me.

-- Ike, Big Daddies Woodshop,

View Page2171's profile


34 posts in 1289 days

#6 posted 1286 days ago

That’s a great idea!. Not only does it make charging safer and extend the life of the charger, but it also saves energy.

-- Brian in Leesburg, GA

View Jeremy Greiner's profile

Jeremy Greiner

568 posts in 1376 days

#7 posted 1286 days ago

Check the manual for your battery chargers .. some do this automatically. Although most do not.

-- Easy to use end grain cutting board designer:

View blackcherry's profile


3148 posts in 2427 days

#8 posted 1286 days ago

This is so cool, and will probably give you a pm on the infor. thank for posting and sharing BC

View lightweightladylefty's profile


2600 posts in 2316 days

#9 posted 1286 days ago


This looks like a great idea, but I’m just a little confused. Why can’t I just plug my rechargeables into the timer I use on my lights to automatically turn my charger off?


-- Jesus is the ONLY reason for ANY season.

View doncharles's profile


16 posts in 1287 days

#10 posted 1286 days ago

The lamp timer may work fine, but be careful not to overload it

-- doncharles AKA Don

View NormG's profile


4002 posts in 1608 days

#11 posted 1286 days ago

Wonderful solution

-- Norman

View tommyd's profile


77 posts in 1736 days

#12 posted 1286 days ago

Nice Idea, but couldn’t you just plug you charger into an ordinary light timer and when you charge your battery set timer on for as long as you want it to charge?

-- Life is too short for negative drama & petty things. So laugh insanely, love truly and forgive quickly!

View Schwieb's profile


1482 posts in 2065 days

#13 posted 1285 days ago

I have often wondered why someone hasn’t made a device like this or built it into the charger. Leaving them on all the time is just part of the phantom power consumption that goes on in our homes. All those little transformers for cell phones, cameras, printers, calculators, etc. etc.

-- Dr. Ken, Florida - Durch harte arbeit werden Träume wahr.

View Tim29's profile


307 posts in 1754 days

#14 posted 1285 days ago

wow, that is a great idea!!!

-- Tim, Nevada MO

View stumpybear's profile


50 posts in 1459 days

#15 posted 1285 days ago

Great Idea!!!

-- Stumpybear,Petersburg PA

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