Question about 1997 Isuzu Trooper

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Battery is reading low voltage.

Should i replace battery or have battery charged? if battery is replaced where can i find the lowest price for shopping?

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  • fnorat May 21, 2009

    thank you so much, I didn't know these, very helpful way to go. I'll be back in the future if any problems



    frank

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You should have your battery load tested before replacing it,Shucks,O'reilleys,Kragens and Autozone will do this for free,but it could also be your alternator,or as simple as a bad battery connection.

Posted on May 21, 2009

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Does not start, battery ok. alternator and starter test out ok


The car battery has 6 cells, each cell holds 2 volts, and connected in series adds to 12 volts. Just like your flashlight, each battery hooked in series results in increased voltage. Its possible one cell is not holding a charge, which slowly drains power from adjacent cells. In battery series connection, if one cell won't hold a charge, electrons will flow to lowest cell voltage in attempt to equalize voltage. So when one cell drops to less than 2 volts, the electrons from other cells will flow to this cell to recharge and bring voltage up to equalize voltage level. To diagnose for dead cell in 6-cell car battery, remove the 6 caps to expose the electrolyte liquid AFTER you have recharged the battery for 20 minutes with 10-amp charger, or until "fully charged" indicator comes "on." With a digital voltage meter set to 5 volts DC reading, connect the negative black probe to negative side of battery and touch the liquid electrolyte with the red positive probe. The voltage meter will display the voltage reading on each cell as you move the red positive probe from one cell to another. Make a note of each voltage reading from each cell. Wait one hour or more, then take another reading of each cell. The cell that has the lowest reading is the one that's draining power from the adjacent cells. A normal battery will show no change in voltage level between the first and second reading an hour later. A defective battery will show a drop in voltage to indicate one or more cell is slowly draining power to gradually render the battery completely dead 36 hours later.
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Nov 29, 2013 | 1999 Toyota 4Runner

1 Answer

Suburban battery not charging


If your battery isn't charging it is either because your alternator isn't putting out enough voltage or the battery has gone bad. With the engine running, check the voltage on the battery terminals. It should read 14.6, or a little lower, but definitely higher than 13. If the voltage is too low the problem is the alternator. If the voltage is reading over 14, the battery needs to be replaced. Are you certain the battery is not charging, or could it be that the battery is being drained overnight?

Jan 14, 2013 | 2003 Chevrolet Suburban 1500

1 Answer

2003 mazda tribute, occasionally won't start. fuel pump replaced about 1 month ago. bad starter?


Many batteries may only last around three years. Check battery voltage at rest before starting. Any voltage in the low 12v range may be a sign of a faulty battery.If low voltage present, then perform a parasitic drain test:1) Disconnect battery POSITIVE terminal and connect ammeter in series, between battery positive terminal and positive lead.
DO NOT START THE VEHICLE!!

2) With all vehicle doors closed, alarm off, lights off, radio off, and all other accessories off, wait for around 20 minutes and then read the ammeter. A healthy system should read about 0.03 amps and little more. If reading more, then the vehicle could be suffering a parasitic amp drain, and you will need to locate this issue.


3) Reconnect battery when finished.


If no major parasitic drain present, yet low battery voltage then:


4) With vehicle started, check the voltage charge from the alternator. Connect voltmeter to battery terminals and take reading. A healthy system should be charging in the range of 14volts or down to around 13.5 volts. If reading around 12 volts only, then check and replace alternator.

Nov 03, 2012 | Cars & Trucks

3 Answers

Battery light is on


The battery voltage needs to be checked.Also if battery is very old and not replaced for very long, then just get the battery replaced.Approx battery life is 3 years.If its very old battery then try new battery. But if battery is new and still battery light is on,. then either battery terminals are dirty or not connected properly or the battery voltage is low.Get the battery re charged to proper voltage.The exact battery voltage of charged battery is 12 volts..Re check and confirm with voltmeter. This should help.Thanks.Helpmech.

May 29, 2011 | 1997 Chrysler Sebring

1 Answer

The battery and altenator are both new and tested good but the battery will not charge all wires are hooked up and seem to be in good condition


Hello! If you have a voltmeter, set it to read 12 volts...With engine off read across the battery terminals...Record the reading...Start the engine...Take the same reading...Voltage must be at least 1.8 volts higher...If not, The alternator isn't providing a charge...Next, turn off engine...Set meter to its lowest scale...Connect + probe to + battery post...Connect - probe to the + (Black/Gray or Black wire) battery lead on the alternator...Start the engine...Turn on heater fan and headlights...Meter must read less then .03 volts...Move the + meter probe to the - battery post...The - probe to bare metal on the engine block...Must read less then .06 volts...If either reading is above the given limits the problem is resistive/corroded battery cables which are dropping voltage...Remove and replace cables... Clean battery post and make sure the other ends are on bare metal...Guru...Saailer

Mar 04, 2011 | 1998 Dodge Ram 1500 4WD

1 Answer

Truck wont start red light keeps blinking fast keep hearing clicking under the hood and in the cab dont know what happened got in the truck to start it, and had driven down the road and it died. now the...


THAT SOUNDS LIKE LOW VOLTAGE. PUT A VOLTMETER ON THE BATTERY WHILE TURNING THE KEY IN THE START POSITION. IF THE VOLTAGE DROPS BELOW 8 VOLTS, THAT IS TOO LOW. BATTERY NEEDS TO BE CHARGED OR REPLACED & TERMINALS CLEANED. IF IT STARTS CHECK THE CHARGING SYSTEM. MOTOR RUNNING, VOLTAGE AT THE BATTERY SHOULD READ 13.90 TO 14.90. IF IT IS TOO LOW GET THE ALTERNATOR TESTED.

Jan 08, 2011 | 2004 Ford F150

2 Answers

Red battery light appeared on dashboard. Please advise the potential problem. Chrysler 300c


Either your battery is shot and no longer will take a charger and your PCM is noticing low voltage or your alternator is not longer charging well enough to provide adequate voltage to your PCM. THese are 2 signs of the battery light

Mar 22, 2010 | 2005 Chrysler 300

2 Answers

Battery light on 2003 intrepid came on


if the charging circuit is low, then it appears that your alternator is going bad....

Battery terminals, when car is off, should read 12V+-.2V. When the car is running, terminals should read 13V-14V=-.2V

Sep 11, 2009 | 2002 Dodge Intrepid

2 Answers

1998 k1500 5.7l 105a alternator. replaced


Now change the sulfated batery for a new one.
Vitally

Sep 09, 2009 | 1998 Chevrolet K1500

2 Answers

Battery Replacement, 2005 Land Rover HSE LR3, 4.4 Litre V8


Yes, this is the correct battery replacement.
information verified by the Land Rover World
web site, and the original dealership our vehicle
was purchased. Cheapest price found, $149.95,
Interstate Battery Center, Lorton, VA.
Interstate Mega Tron Plus, MTP-H8
Hope this helps someone else!

Mar 31, 2009 | 2006 Land Rover LR3

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