12 volt rechargeable drill

bob26

bob26

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Sussex-by-the-sea
www.tridentlottie.com
I have a 12 volt rechargeable drill.

Has anyone had any experience of trying to recharge such a thing on board - using 12 volt battery/alternator of boat engine?

The transformer and battery charge connector are separate so physically would be quite simple to connect drill battery to engine battery.



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We use to recharge a 12 v video camera by the same method, worked better than the ordinary charger ! but took all day. advisable to have a diode in the charge line for when you forget to disconnect it when stopping the engine, oh & a fuse.

good luck


<hr width=100% size=1>David
<A target="_blank" HREF=http://www.euroboating.net>http://www.euroboating.net</A>
 
I thought, as you seem to suggest, that a 12 volt drill set would charge from the boat system. Wrong. My set refuses to charge unles someting like 15-16volts is available. I now charge the drill at home or using the 230v inverter onboard.

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I thought, as you seem to suggest, that a 12 volt drill set would charge from the boat system. Wrong. My set refuses to charge unless someting like 15-16volts is available. I now charge the drill at home or using the 230v inverter onboard.

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That's interesting Colin...I also have a 9v Bosch rechargeable drill. Perhaps that#s the one I should be recharging from the 12 volt system!! The output from the mains charger is said to be 11.6v for a 9.6volt drill. The charger for the 12volt drill is rated at 16volts output.

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I've opened a 12v rechargable drill, soldered two core cable to the positive and negetive terminals, ( red +, black - ), put crocodile clips on the other end. I now just have to clip on to the boat battery when I need to use the drill.

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G'day Bob26,

I had a spare battery with my rechargeable drill and pulled the guts out of it, and it now has a 12 metre lead with 12 volt plug to the boat's battery bank, works very well.

So, if you have an old battery drill and they want a fortune to replace the original battery, consider a direct link, of course it will have to be close to a 12 volt model, keep this in mind when purchasing your next battery drill for use on board later.

I hope this helps. . . . . .



<hr width=100% size=1> Old Salt Oz /forums/images/icons/cool.gif Growing old is unavoidable. However, growing up is still optional.
 
Hi,
I'm interested in your approach to the 12-volt drill use 'challenge'.
(My finger has just healed after being spot-welded when I held a bare wire onto an otherwise disconnected 12v battery to power my B&D 12v drill - which got repaired a lot quicker than my flesh!)
Can you pass on any hints re wiring up the interior guts?
What I obviously didn't do was work out the polarity befoer I tried my cack-handed improvisation...

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G'day Multimal, and welcome, no doubt this being only youe second post we can look forward to many more: filling in your profile will help us all to provide you with better information tho.

The first and most important thing is the drill
(or other rechargeable Gizmo) is a 12 volt unit, if it's a 9 volt it may burn out, if 6 volt it will burn out, if it's more than 12 volts it will lack speed and power.

Having said that:-
You can open up the drill and direct wire it, see note below re knot in cable and heatshrink.

Or.

'Most' rechargeable batteries are made to come apart for battery replacement, you will find that most are soldered in, so first open the battery, un solder the old batteries and solder your lead on the main terminals, the old batteries will indicate positive and negative (in case your drill does not have reverse). Drill a small hole in the bottom of the case for the cable to run thru' and tie a single knot to prevent it pulling out; slip some heat shrink over the knot and have enough to protect the cable as it passes thru' the hole.

You can add a connector to the other end or just clips, mine is connected with 4 mm tinned wire, figure eight type.

Hope this helps.



<hr width=100% size=1> Old Salt Oz /forums/images/icons/cool.gif Growing old is unavoidable. However, growing up is still optional.
 
Gidday oldsalt, I have done what you recommend with a 7.2 volt old cordless that I had laying around and had no problems with it burning out. If it were to start happening I think you would get a warning smell first. I have mainly used it for small diameter holes though. Polarity is unimportant as the drill has a reversing switch. I have seen one connected through a dummy battery connector so that it can still be used off the boat.
Cheers.

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