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Compacq 1200 will come on sometimes and some times it won,t

The battery is no good but the ac adapter works find checked it with volt meter and you can plug it up and it will come on as long as you don,t unplug it you can cut it off and on but if you unplug iy it might not come back on for three days

Posted by chollymock on


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Greg Stokes

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HI Chollymock,


I suggest you get a new battery.  Now that is a $50 proposal. I found you the best seller on ebay to get one from.  Most of the other sellers are frm China. IU-Tech is a USA based Seller from Bohemia, NY.  His price and warranty is best from all sellers in the USA on Ebay.  His Feedback is good as well. 


The Following URL will put you onto the Battery you need for your Laptop.

Posted on Oct 13, 2007


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I cant get my power chair jet 3 to charge batteries are good

Hi valentin 201
I have owned my own business for 3 years and have been working on scooters and powerchairs for 15 years. . In the future give as much info about the scooter as possible.

1. load test the batteries even if you think they are good, check anyway. Sometimes even new batteries won't hold a charge.

2. Your charger on the powerchair must have enough volts to open the charger inhibitor. That is, the charger won't even start up if your batteries are low. Both batteries need to have at least 20-22 vdc.

3. Some chargers have a 3amp fuse check that and repace if needed.

4. With a multi meter set on dc200 check your batteries. Red on one battery and black on the other. Check to see what you get for voltage. If no voltage reverse the lead wire to the other posts. Once you get a reading of 20+ volts watch the meter and plug in the charger, it should increase the volts on the meter. if not the charger is bad, replace. Charger should be 24-31 volts to be a good charger.)

One of these sugestions will fix the problem

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New batterie new negative wire new posative wire but wont charge . are there any reiays or fuses causing this problem?

You need to check the output of your alternator. You'll need a DVOM (digital volt ohm meter) to check the outputs.

First connect the meter across your battery. Red meter lead to the positive terminal, black meter lead to the negative or a good ground. Put the function selector of your meter in DC VOLTS, 20 VOLT RANGE. Start the engine and bring it to a high idle, 2000 RPM. Your meter should read 14.5 to 15.0 volts. Turn all lights on and make sure the voltage stays the same.

If your meter reads low in this test, you need to check the output of the stator. On the lower left front of the engine, you'll see a plug where the voltage regulator plugs into the engine case. Unplug this plug and look into the part that is in the engine case. You'll see two metal contacts. These are what you're going to put your meter leads to in this test. Since the voltage is now AC volts, it makes no difference which lead goes to which contact. Put your meter's function selector in AC VOLTS, 50 VOLT RANGE. Start the engine and bring it to a high idle. Insert the meter leads into the contacts. The meter should read at least 30 volts AC voltage here.

If the alternator stator test fails, you need a new stator. If it passes the test but the voltage to the battery is low, you need a new regulator.

If both pass the test, you need to evaluate the current draw of any extra lights or other equipment that you may have put on the bike. If your equipment is drawing more current than the alternator is capable of producing, a slow drawdown of the battery is the results.

Good Luck

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How do i check if my regulator rectifer is working on my 1989 xlh 1200 sportster i have put voltmeater on battery dc and reved bike voltage at 12.34v dose not move but turn bike off volts go to 12.8v ,i...

You need to check the output of your alternator. Unplug the regulator from the wires that come from your alternator. Put your meter function switch in AC VOLTS, 50 VOLT range. Start the engine and bring it to a high idle. Insert the meter leads into the alternator side of the plug. It doesn't make any difference which lead goes to which contact because you're measuring AC voltage. You should be reading 25 volts or higher from your alternator.

If your alternator is putting out 25 volts or better, and your battery is fully charged but only reading 12.3 volts, then your regulator is probably bad. It should be reading 14.5 to 15.0 volts when checked with a fully charged battery.

Make sure the regulator is grounded well to the frame and all connections are tight and clean.

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