wrote in message ...
I agree with those that think the problem is due to using a non-sine
wave inverter. I've recently seen low power true sine wave inverters
advertised for a reasonable price, I think it might have been in the
Norther tool catalog. In any case, I suspect the inverter may still
cost more than a new drill as one writer said. If there is a valid use
for the sine wave inverter other than charging the drill, that may be an
option.

Jim.
OMOO wrote:

A friend bought a 19.2 v Sears cordless drill for use on his boat.
He's cruising now in Aust so no 110 VAC wall power. The charger won't
charge the 19.2 VDC battery on either his inverter or his Honda
generator. Sears doesn't have a 12VDC charger so now what.

Any ideas why and how to fix this ? Any possibility of a generic
charger that runs on 12 VDC? I don't know what the 110 VAC charger
puts out - maybe 25 V ??

There's a lot of chargers for radio control/battery powered craft-
typically the aircraft have anywhere from 4 cells on up. andf they want the
darned cells charged fast. Plus they typically use a car battery for the
energy source. Trouble is, the chargers are gonna set you back a lot more
than the drill. If I was stuck with 12 volts as the source and didn't want
to shel out a bunch for the tool, I'd get a 12v drill- for the commonality.
Regards Pat

OMOO wrote:

Correction/addition - what I should have said is that the fuse on the
110 VAC charger blows on both the inverter and the Honda - that's why
the battery doesn't charge.



A friend bought a 19.2 v Sears cordless drill for use on his boat.
He's cruising now in Aust so no 110 VAC wall power. The charger won't
charge the 19.2 VDC battery on either his inverter or his Honda
generator. Sears doesn't have a 12VDC charger so now what.

Any ideas why and how to fix this ? Any possibility of a generic
charger that runs on 12 VDC? I don't know what the 110 VAC charger
puts out - maybe 25 V ??






Perhaps he should get/use a slow 19.2v charger, since it sounds like the
charger he has is drawing too much.

In a pinch, he might be able to use a variable-output power supply: Dial
in a lower voltage until the battery is somewhat charged, then increase
the voltage to match the demand.

I have a 12v rechargeable that is easily charged from a 250 watt
inverter in a few hours. ('Course, I chose 12v so I could go direct
to/from 12v if I needed to. It's more than powerful enough for my
purposes -- like 1/2" holes through oak, fiberglass and aluminum....)

--
Jere Lull
Xan-a-Deux ('73 Tanzer 28 #4 out of Tolchester, MD)
Xan's Pages: http://members.dca.net/jerelull/X-Main.html
Our BVI FAQs (290+ pics) http://homepage.mac.com/jerelull/BVI/

On Sun, 21 Sep 2003 19:00:19 -0400, Ryk
wrote:

If he has access to 220/240 shore power, then perhaps a 2:1 step down
transformer will solve the problem for the drill and any other AC
stuff on board.

Someone please correct me if I'm wrong because I'm about to
electrocute myself but I understand that if the stepdown is an
isolation transformer (ie neither output leg is grounded) you can use
120v tools safely. Acually it doesn't have to be a stepdown, it can be
any isolation transformer.

hiya
i have a model car type fast charger on board and i use it to charge my
hand held VHF in 15 mins which at times still isnt fast enough.
I could use it to fast charge anything up to 12v.
Buy a 9.6v drill with and a couple of batts and hey presto buy the time 1
batt is flat the other will be charged.

flame away

fragged

"OMOO" wrote in message
...
A friend bought a 19.2 v Sears cordless drill for use on his boat.
He's cruising now in Aust so no 110 VAC wall power. The charger won't
charge the 19.2 VDC battery on either his inverter or his Honda
generator. Sears doesn't have a 12VDC charger so now what.

Any ideas why and how to fix this ? Any possibility of a generic
charger that runs on 12 VDC? I don't know what the 110 VAC charger
puts out - maybe 25 V ??

"patrick mitchel" wrote in message ...
wrote in message ...
I agree with those that think the problem is due to using a non-sine
wave inverter. I've recently seen low power true sine wave inverters
advertised for a reasonable price, I think it might have been in the
Norther tool catalog. In any case, I suspect the inverter may still
cost more than a new drill as one writer said. If there is a valid use
for the sine wave inverter other than charging the drill, that may be an
option.

Jim.
OMOO wrote:

A friend bought a 19.2 v Sears cordless drill for use on his boat.
He's cruising now in Aust so no 110 VAC wall power. The charger won't
charge the 19.2 VDC battery on either his inverter or his Honda
generator. Sears doesn't have a 12VDC charger so now what.

Any ideas why and how to fix this ? Any possibility of a generic
charger that runs on 12 VDC? I don't know what the 110 VAC charger
puts out - maybe 25 V ??

There's a lot of chargers for radio control/battery powered craft-
typically the aircraft have anywhere from 4 cells on up. andf they want the
darned cells charged fast. Plus they typically use a car battery for the
energy source. Trouble is, the chargers are gonna set you back a lot more
than the drill. If I was stuck with 12 volts as the source and didn't want
to shel out a bunch for the tool, I'd get a 12v drill- for the commonality.
Regards Pat

If the charger fails to charge on the Honda generator (which
definitely puts out a sine wave), then the problem is NOT related to
the non-sine output of the inverter. Either the problem is more
exotic, or the the charger or battery has gone bad. I cruised for
years with a 'modified sinewave' Heart Interface inverter, and I never
had any problem with any appliances, including chargers. The peak
voltage put out by square wave inverters is quite a bit lower than
sine wave peak voltage for the same rms, so the simplest types of
chargers may not develop enough output to charge a battery when used
with the simplest types of inverters (i.e., square wave). However,
most proper shipboard inverters are (like the Heart) at least
'modified sinewave', which put out narrower alternating voltage pulses
(with some dead-time in between) having a peak voltage nearly as great
as the equivalent sine wave.
Paul Mathews

Since the fuse is blowing on the Charger, I would suspect that the charger
is bad, or the battery is shorted..........

Bill

Simple ... if it's Sears, return it ... they're real good that way. Then go
get the right tool for the job.


"OMOO" wrote in message
...
A friend bought a 19.2 v Sears cordless drill for use on his boat.
He's cruising now in Aust so no 110 VAC wall power. The charger won't
charge the 19.2 VDC battery on either his inverter or his Honda
generator. Sears doesn't have a 12VDC charger so now what.

Any ideas why and how to fix this ? Any possibility of a generic
charger that runs on 12 VDC? I don't know what the 110 VAC charger
puts out - maybe 25 V ??

bowgus says:

Simple ... if it's Sears, return it ... they're real good that way.

They have Sears in Oz?

;-)

Steve

Dear Simple - he's cruising in Australia - see line 2 below - he won't
be back for many a year - and no Sears in Aust.


Simple ... if it's Sears, return it ... they're real good that way. Then go
get the right tool for the job.


"OMOO" wrote in message
.. .
A friend bought a 19.2 v Sears cordless drill for use on his boat.
He's cruising now in Aust so no 110 VAC wall power. The charger won't
charge the 19.2 VDC battery on either his inverter or his Honda
generator. Sears doesn't have a 12VDC charger so now what.

Any ideas why and how to fix this ? Any possibility of a generic
charger that runs on 12 VDC? I don't know what the 110 VAC charger
puts out - maybe 25 V ??

I'm assuming that whilst he is "cruising" down here, he wants to charge
whist shore power is available. i.e. 240V 50 HZ not the 110 V 60 Hz the
charger is used to. Presumably neither the genset nor inverter would charge
it when moored in USA, I guess he didn't try it before he left.
I'd suggest he TRIES a 240 / 110 V transformer ( hoping the 50 Hz / 60 Hz is
not an issue,) or buys a new cheap drill which charges from 240V and 110 V.

Or buy a new inverter or genset ....

DF


"OMOO" wrote in message
...
Dear Simple - he's cruising in Australia - see line 2 below - he won't
be back for many a year - and no Sears in Aust.


Simple ... if it's Sears, return it ... they're real good that way. Then
go
get the right tool for the job.


"OMOO" wrote in message
.. .
A friend bought a 19.2 v Sears cordless drill for use on his boat.
He's cruising now in Aust so no 110 VAC wall power. The charger won't
charge the 19.2 VDC battery on either his inverter or his Honda
generator. Sears doesn't have a 12VDC charger so now what.

Any ideas why and how to fix this ? Any possibility of a generic
charger that runs on 12 VDC? I don't know what the 110 VAC charger
puts out - maybe 25 V ??