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 ??

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 ??

I am going to hazard a guess and say that the 120 VAC to 19.2 VDC charger
requires a good sine wave for operation. It could be that both the inverter
and the honda genset (I believe it has an inverter also - or at least the
web site said so) power output is a modified sine wave that does not get
correctly inverted to 120 VAC.

Perhaps he could try a pure sine wave inverter.... Mucho dinero!

"OMOO" wrote in message
...
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 ??

Ny the way the cheapest option may be a new drill :-)

"Rick & Linda Bernard" wrote in message
...
I am going to hazard a guess and say that the 120 VAC to 19.2 VDC charger
requires a good sine wave for operation. It could be that both the
inverter
and the honda genset (I believe it has an inverter also - or at least the
web site said so) power output is a modified sine wave that does not get
correctly inverted to 120 VAC.

Perhaps he could try a pure sine wave inverter.... Mucho dinero!

My DeWalt will charge on little cheapo inverters like you can find at
WalMart.

"Rick & Linda Bernard" wrote in message
...
Ny the way the cheapest option may be a new drill :-)

"Rick & Linda Bernard" wrote in message
...
I am going to hazard a guess and say that the 120 VAC to 19.2 VDC
charger
requires a good sine wave for operation. It could be that both the
inverter
and the honda genset (I believe it has an inverter also - or at least
the
web site said so) power output is a modified sine wave that does not get
correctly inverted to 120 VAC.

Perhaps he could try a pure sine wave inverter.... Mucho dinero!

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 ??

what would happen if he put 2 12v batterys in series & made 24 volt charger?

Add a back up light bulb in series to slow the charge rate and it will work
just fine, as long as he wont leave it on all the time. A much smaller ( dash
) bulb most probably could be used as a trickle charger.

A smaller battery ( Big lawn more ) with a DPDT, switch and a light bulb in its
charging circuit would be a good bet.

Mike

what would happen if he put 2 12v batterys in series & made 24 volt charger?

On Sat, 20 Sep 2003 13:55:53 -0700, in message

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.

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. They are not too pricey, especially for a small load
like a drill charger.

Another possibility is that the charger draw on the non-ideal power is
a little higher in a transient way -- he could try a slow blow fuse of
the same rating.

Ryk
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Unfortunately this address has been overrun by SPAM.
If you want to be sure I see email from you, then
please include the words "Ryk says it's OK" somewhere
in your message.

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 ??

try an inverter?


--
Beer, it's not just for breakfast anymore.......

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 ??