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SUVs Honda Pilot Honda Pilot Maintenance and Repair
3187 messages, Last post on Nov 28, 2009 at 11:32 PM
You are in the Honda Pilot Forum. Your Hosts are steve_ & tidester
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Replying to: rodut (Feb 12, 2009 3:45 pm) tidester, host SUVs and Smart Shopper |
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Replying to: rodut (Feb 12, 2009 3:45 pm) TABLE I. State of charge as related to specific gravity and open circuit voltage Percentage of Charge Specific Gravity Corrected to 80o F Open-Circuit Voltage SG 6V 12V 24V 36V 48V 100 1.277 6.37 12.73 25.46 38.20 50.93 90 1.258 6.31 12.62 25.24 37.85 50.47 80 1.238 6.25 12.50 25.00 37.49 49.99 70 1.217 6.19 12.37 24.74 37.12 49.49 60 1.195 6.12 12.24 24.48 36.72 48.96 50 1.172 6.05 12.10 24.20 36.31 48.41 40 1.148 5.98 11.96 23.92 35.87 47.83 30 1.124 5.91 11.81 23.63 35.44 47.26 Iffy 20 1.098 5.83 11.66 23.32 34.97 46.63 Killer 10 1.073 5.75 11.51 23.02 34.52 46.03 “ Discharging Discharging batteries is entirely a function of your particular application. However, below is list of helpful items: 1. Shallow discharges will result in a longer battery life. 2. 50% (or less) discharges are recommended. 3. 80% discharge is the maximum safe discharge. 4. Do not fully discharge flooded batteries (80% or more). This will damage (or kill) the battery. 5. Many experts recommend operating batteries only between the 50% to 85% of full charge range. A periodic equalization charge is a must when using this practice. 6. Do not leave batteries deeply discharged for any length of time. 7. lead acid batteries do not develop a memory and need not be fully discharged before re charging. 8. Batteries should be charged after each period of use. 9. Batteries that charge up but cannot support a load are most likely bad and should be tested. Refer to the Testing section for proper procedure. FWIW: Leaving the inside lights on can kill a battery in a day or so. Leaving the drivers door ajar and its courtesy light ON can kill a battery in a few days. I suggest you keep a trickle charge going to your battery for your application. Trickle chargers can be bought at any automotive store or even Walmart. If an electrical outlet is not available, a solar panel is a good option. Of course it would need to be mounted outside so it can get sunlight. Some solar panels have built in controllers that keep the battery from overcharging and keep the battery from draining when the solar panel is at idle at night. Others require a separate controller. Google "Solar Panels". Kip |
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Replying to: rodut (Feb 12, 2009 3:45 pm) If stored for a long time (ha ha, 2 wks!) you should probably disconnect the battery or buy a trickle charger/battery tender. Good luck! tom |
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Kipk, your table data for 12V, and my table data are close to each other. Tidester, my rustproofing system draws 10mA only according with their website, which for a typical 50 Ampere-hour battery should allow a battery life of 50 / 0.01 = 5,000 hours = 208 days = ~7 months. So it's not the rustproofing system who discharges the battery. It's something in the shutdown PILOT drawing that current ! By the way, I leave the driver door open all the time in the garage (there are no courtesy lights at the bottom of the front doors because I removed the bulbs the day I brought the car home from dealership). Could an open door raise the current drawn from the battery ?? If not, what the hell draws so much current from the battery when anything is shutdown ?! Tsy, both you, other people, and myself saw this happening, so probably all our cars are OK. By design the Pilot draws too much current when shutdown. DOES SOMEBODY KNOW WHAT DEVICE TAKES THAT CURRENT? Perhaps I could put it in garbage, like I did with the door bulbs. 
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Replying to: rodut (Feb 13, 2009 11:32 am) Is there a reason to leave the driver door open instead of close? Other than courtesy lights there may be something else (chime maybe) consuming the battery while door is open.
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Replying to: bigdadi118 (Feb 13, 2009 2:47 pm) Initially I laughed at your idea, but now I realize that one of the many new&useless&fancy features new cars have is that they lock by themselves if you don't physically open the door sometime after you electronically unlock the doors. Which means that after you unlock the door, some stupid electronic device waits to see if you open the door or not. And if you don't open any door, it will lock back anything by itself. I wonder what current that device wastes, while the locks are unlocked. So the wasted current could be related either with the door physically open (as you say), or with the unlocked locks. Or it could be related with none of them, and it's a "new feature" of the Pilot: it just wastes current at all times (even when shutdown). |
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In the old days, I used to check for battery draw by disconnecting the battery cable and touching it back to the battery post. It makes a slight spark that you can see in dim light. Then I would remove each fuse to find the circuit that had the draw (there would be no more spark) and go from there. If you don't see any spark at all, then it is the battery itself that has a bad cell. Today we can use a multi-meter and watch the amps when you pull fuses. There is absolutely nothing (normal) that draws the kind of current that would drain a battery in a couple weeks, PERIOD. There is definitely something wrong happening. Lead acid batteries have a very low self-discharge rate but should be charged once at least every couple months during service, which your car does every time you drive it. My forty-year-old truck sits outside all winter for months at a time and cranks right over. The problem with it is that the fuel evaporates from the carburetor and takes some cranking to get gas again.
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Replying to: justaveragejoe (Feb 19, 2009 8:47 am) With all due respect, your knowledge is obsolete ! Me too I had a 1989 Volvo 240 which I left for 5 months (winter included) unused. After that I turned the key and the damn thing started. Great cars we had in those old days ! But these days it's different. Cars have all kinds of memories storing engine settings, software programs, radio stations, etc. They all waste current, which kills the battery in a matter of weeks instead of months. And by the way, I enjoyed reading about your method of finding the circuit that had the draw without using any instrument (not even a multimeter). As a side note I would like to mention that if you do your trick (battery post sparking) while you forgot to turn OFF the radio/CD, then you will burn the microprocessor in it ! Funny isn't it ? I read this in my other car User Guide. You should never disconnect a battery while the radio/CD player is turned ON ! If you do ... you will have to sing to yourself ... Cheers
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Replying to: rodut (Feb 19, 2009 5:39 pm) The constant drain and subsequent failure to start would be rather annoying. I don't read all the discussions about all the cars around here, but it sure seems that only Pilot owners are reporting this issue in any number. |
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Hi, I'm getting code A16 on my '07 Pilot. I checked manual, looks like I will be needing oil change, tire rotation and VTM-4 fluid. Anyone knows how much it will cost me for having this maintenance? Any estimate? My local Honda dealer (San Jose,CA) where I purchased car quoted me $150 which I think a little pricey. Thanks in advance.
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