Question about 2003 Hummer H2

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I was putting in speakers and amps and the battery went dead put a charger on it and it will not start. I want to know if I blew something out

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    Johnathan Lence Apr 09, 2015

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Hi, well anything is possible, but as an old installer here are some things to check. First, depending on the size of your charger, it will take a few hours to get enough. Charge to start your vech. You might try jump starting it, or if possible, take your batt. To the local auto zone or equiv. And have them charge and check your batt. If you have an aftermarket. Alarm, that could be engaging. The starter kill.

Posted on Apr 09, 2015

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Posted on Jan 02, 2017

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If you are saying the charger is staying on the very low side of charge for a dead battery .depending on the type charger you have it may be your battery is too low for your charger to get the dead battery going..sometimes I need to give a completely dead battery a jolt to get it going..if you have or know some one has a jump start type charger that puts out very high amps for starting..have them give it a few min of that high amp charge..if you have a battery where you can take the cals off you should see the cells bubbling...All cells must show some or it is shorted. Just don't let on more the a min or two...good luck

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3 possibilities are:
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I think your battery is dead. Check and confirm that the battery is at 12.6 volts. If it is below 10volts then put the battery on a charger or replace it.
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How many amps does this charger put out????
A small trickle charger will take forever to fully recharge a dead battery, you'll need to have a battery charger that can put out enough amps to properly charge a dead battery.To clarify, the chargers sold at Sears, the large square types on wheels are the best for charging dead batteries and they also have an amp meter telling you how much the battery is accepting. After you charge your battery, you should be around 12.5 volts to 12.7 volts. DO NOT OVER CHARGE!!!

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Could be that the battery drained.. Maybe something left on 'ie - interior light or something.

Try putting a battery charger on the batt.

If you dont know someone with a chargere & have to buy one ---
( psst - you can return the charger after use )

Good luck

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