Ryobi Cordless Drill Charger

Here's what I do:

Put a moving coil milliammeter (multimeter) in series with an adjustable wall wart. Set the polarity for the highest current on the lowest voltage setting, then up the voltage until the current is what I consider reasonable. Let it charge overnight, adjusting the volts up as needed. Generally this will give you a full charge and will give you an idea as to what voltage charger to use.

Sounds like it would make for a long, sleepless night.

Given the OP's implied level of experience, advising him to "up the voltage until the current is what I consider reasonable" is about as useful to him in his situation as a sack of hammers.

Unless he buys your book "Reasonable currents for all situations, Vol. 3,

I cross-posted your request to a few woodworking and home-repair groups. Maybe someone who has a Ryobi 6-volt drill can look at the "brick" and give you the specs off it.

Good luck,

NiCD batteries are pretty forgiving. What I would do is use a 12V or so wall wart and put a resistor in series if necessary to limit the current. IIRC if you take the ma/hr rating of the cells and divide by 10, you get approximately the charge current you want. It's not too critical though, slower charge is easier on the batteries but takes longer.

It's a practical method. Failing that, he needs to buy the right charger.

John E. wrote in news: snipped-for-privacy@news.sf.sbcglobal.net:

Ryobi's use a really simple charger,just a wall-wart with a diode rectifier,I suspect.The transformer probably limits the charging current itself. Ryobi's are the cheapest cordless drill/drivers around.

snipped:

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Not the only one, I suspect thata Skill and Black and Decker may share that title too. Daniel Sofie Electronics Supply & Repair

John E. wrote: [quoting me]

Great. Thanks for that.

I know what you mean, the smart-ass in me had to reply to your post. My first attempt which I did not send advised him to phone Ryobi and get either the info or the location of a store where he could buy the proper charger.

Dave

I've been given or purchased cheap many an item missing its charger. This is the method I use. I usually aim for 1 or 2 hundred mA of charge current.

Before posting at s.e.r., I Googled for the item. It is sold at a few online tool dealers. None of the few links I checked gave a view of the charger, and none had any details regarding output current. I figure if I called Ryobi, the person answering the phone would know only how much extra the shipping would cost, and how to take credit card information. Home Depot is a five-mile drive. The person there would liklley not know how to read the information on the charger. Thus it seemed logical to ask here, in the belief that someone at s.e.r. actually owned one of these drills and could quickly provide the answer.

So, you've never seen a Coleman? They get my vote for the worst ever made.

There is a six volt Ryobi drill/W charger on Ebay right now.

If its the same tool, email the seller to ask the seller what the charger is rated at. I don't have an Ebay account, so I can't contact the seller.

"Michael A. Terrell" wrote in news: snipped-for-privacy@earthlink.net:

I wouldn't even know where to buy a Coleman. ;-)

a Coleman camping lantern;yes,drill/driver;no.

really,

too

of

A quick Google search for the HP62 gives the parts listing

I didn't buy them, they were given to me. Shoddy workmanship, and low quality, even for China. I got two drills, a case, a flashlight, a buffer, seven 18 V batteries and six chargers. One drill had a wire to the trigger than had never ben shoved into the slot, and the other had the shaft that held the chuck sheared off.

Ryobi Tradeline (Japanese Ryobi) tools used to be the best value for money power tools around - that is until Techtronic Industries in China bought the Ryobi power tools business which supplies US/Europe/Australasia from Ryobi in Japan. When Ryobi power tools started coming from the China factories of TTI their quality went down the tube.

LOok at the brands now owned by TTI here and weep.

Note that TTI also manufacture power tools for many other brands so it is possible that they even make for Coleman.

If you have any of the old original manufacturer items with the TTI brands then it might pay to fix them rather than buy a new replacement of the same brand.

Yeaaaaay! A Google Expert steps forward!

Sorry Jim, I didn't mean to snip your post and then attribute my comments to you.

Ross

down

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replacement