24Wh?

Geo-TH,In · Dec 8, 2014

I looked at a 19.2v craftsman Li battery. Instead of giving a ma-hr rating, the battery is a 24Wh. I've never seen 24 Wh before. Is this something new? If Wh stands for watt-hours, is a way hiding the fact the battery is a wimp, 1250 ma-hr?
craftsman 19.2

John T · Dec 8, 2014

Gosh George, any Billy Bob would want 1250 instead of only 24 of anything right lol They don't pay attention to milli or micro or any of that communist metric stuff lol

John T

Geo-TH,In · Dec 8, 2014

Am I right in guessing that 24Wh is the same as 1250 ma-hr? I think all this may be way above Bubba's IQ, which may approach room temp on the Celsius scale.

MarkB_MI · Dec 9, 2014

George, I'd say you're right. By using an odd spec, they avoid comparison with similar products. Sort of like the "HP" ratings on Sears air compressors, table saws and lawn mowers, which bear no resemblance to a realistic horsepower rating.

FWIW, it would actually make sense for manufacturers to go to a watt-hour rating for cordless tool ratings. Amp-hour ratings are pretty bogus, since voltage drops as current is drawn from the battery. So useful power goes down as the battery discharges. What you really want to know is the "area under the curve", where the output of the output watts is plotted versus time. And of course the units for the area under the curve will be in watt-hours.

Geo-TH,In · Dec 9, 2014

Mark,
My BIL has the crapsman cordless drill at his vacation home in Florida. I will never have one. He also has a dewalt 4 pack. His old NI-cd batteries are junk. He paid to have someone replace the cells. They are junk too.

I showed him where he can get NI-MH batteries off ebay for $37 each, free shipping. He got a pair of them and is impressed. The ebay batteries look like dewalt batteries, same color, made in china. I have yet to find dewalt's name on the NI-Mh batteries, yet they sell a charger for all 3 types of batteries. Does anyone know why?

bjb in TX from Ne · Dec 9, 2014

Spend the extra money and get this battery instead:

<a href="http://www.sears.com/craftsman-c3-19.2-volt-xcp-high-capacity-lithium/p-00935702000P">XCP Li 19.2v battery</a> and buy the charger seperately.

Both my original NiCads are dead, but the two Li-Ion are still going strong. The one above usually lasts all day on a full charge. The cordless circular saw work great with this battery.

T in NE · Dec 11, 2014

I've got the 19.2 crapsman's, but I am going to switch over to 18V Milwaukee or DeWalt when I have the money.

Know why DeWalt tools are so expensive? Because they are worth it!

24Wh?

Geo-TH,In

Well-known Member

John T

Well-known Member

Geo-TH,In

Well-known Member

MarkB_MI

Well-known Member

Geo-TH,In

Well-known Member

bjb in TX from Ne

Member

T in NE

Well-known Member

Similar threads