For the electronic guys

Yes they do get fried... Usually the diode(s).. I have fixed a few.

wa8yxm wrote:
If the plugs are the same and are both Center positive (There are about 20 different plugs on those things) then the major difference you will find is faster re-charge of your battery (more than likely) and possibly a slightly (And I MEAN SLIGHTLY) lower over all life.

Most of those battery packs are AGM batteries in the 15-30 amp hour range, your 2 amp converter might be a bit fast for the smallest ones.. But the AGM lovers on this forum all like to brag about how they can be charged faster so I doubt it,, For the most common ones it is aroudn 10% c-20 and that is a very good re-charge rate for most rechargeable batteries.

Oh and if you know how.. Radio Shack sells replacement plugs.

Thanks, I opened up the wort and couldn't get a reading across the pos and Neg...Think it's fried

If the plugs are the same and are both Center positive (There are about 20 different plugs on those things) then the major difference you will find is faster re-charge of your battery (more than likely) and possibly a slightly (And I MEAN SLIGHTLY) lower over all life.

Most of those battery packs are AGM batteries in the 15-30 amp hour range, your 2 amp converter might be a bit fast for the smallest ones.. But the AGM lovers on this forum all like to brag about how they can be charged faster so I doubt it,, For the most common ones it is aroudn 10% c-20 and that is a very good re-charge rate for most rechargeable batteries.

Oh and if you know how.. Radio Shack sells replacement plugs.

Tom_M wrote:

rk911 wrote:
if his old wall-wart output 12v and worked why wouldn't the new wall-wart, also 12-v, work?

Even though the old wall-wart stated 12 volts, the voltage it actually puts out is much higher. The voltage output of a charger has to be higher then the voltage of the battery it is charging.

then i'd argue the old charger is mislabeled.

Tom_M wrote:
Many wall-warts have no voltage regulation and it is the device that it plugs into that will handle the voltage regulation. I recently installed an amp meter that needed an isolated 6 to 24 volt supply. I had a 5 volt wall-wart and the output measured 9 volts so I used it.

The battery pack that the OP has is most likely a 12 volt lead acid gel-cell. A fully charged 12 volt lead acid battery should be around 12.7 volts. His 12.2 volt wall-wart will never fully charge it.

You are right. It's still fully charged and it's at 12.7 or so

rk911 wrote:
if his old wall-wart output 12v and worked why wouldn't the new wall-wart, also 12-v, work?

Even though the old wall-wart stated 12 volts, the voltage it actually puts out is much higher. The voltage output of a charger has to be higher then the voltage of the battery it is charging.

Many wall-warts have no voltage regulation and it is the device that it plugs into that will handle the voltage regulation. I recently installed an amp meter that needed an isolated 6 to 24 volt supply. I had a 5 volt wall-wart and the output measured 9 volts so I used it.

The battery pack that the OP has is most likely a 12 volt lead acid gel-cell. A fully charged 12 volt lead acid battery should be around 12.7 volts. His 12.2 volt wall-wart will never fully charge it.

I did find this http://www.powerstream.com/ac-1501.htm

But i'll try the one I have and see how it works

Tom_M wrote:
Measure the voltage of the HDD supply. If it measures 12 volts DC exactly, it won't work. It would charge your battery only to 12 volts which would not be fully charged. You need something in the neighborhood of 15 volts to get a full charge.

if his old wall-wart output 12v and worked why wouldn't the new wall-wart, also 12-v, work?

Tom_M wrote:
Measure the voltage of the HDD supply. If it measures 12 volts DC exactly, it won't work. It would charge your battery only to 12 volts which would not be fully charged. You need something in the neighborhood of 15 volts to get a full charge.

HDD-12.2 Can't measure old one