Changed my Battery, increased MPG by 10% - Page 4 - Fuelly Forums

Android Users - Coming Soon! - Migrating from aCar 4.8 to 5.0

Reply
 
Thread Tools Display Modes
 
Old 07-09-2011, 09:16 AM   #31
Registered Member
 
add|ct's Avatar
 
Join Date: Jun 2010
Posts: 534
Country: United States
Re: Changed my Battery, increased MPG by 10%

^Probably because it seems like the alternator is overvolting, but the device is assuming the problem is with the alternator and not the battery holding a charge/simply being discharged?

I'm going to try to make it to this winter on the current battery. It's a silver DieHard 51; C2 code(not the 51R like I should have go figure), but it was from 2008 according to the sticker on the front. So, I'd imagine had I not killed it and not knowing what the previous owner did before purchasing the car at the end of 2009...perhaps it would have went another 2-3 years. Not a bad battery, but can't take abuse and live through it. I'm hoping the Mega Tron Interstate or perhaps an Optima can handle it.

BTW: Charged the battery for 13 hours at 12V 2A, now currently finishing off the charge at 12V 6A for another 2 hours.
__________________

__________________
'92 Civic VX, Canadian model
add|ct is offline   Reply With Quote
Old 07-09-2011, 03:14 PM   #32
Registered Member
 
imzjustplayin's Avatar
 
Join Date: Dec 2011
Posts: 720
Country: United States
Re: Changed my Battery, increased MPG by 10%

Quote:
Originally Posted by add|ct View Post
^Probably because it seems like the alternator is overvolting, but the device is assuming the problem is with the alternator and not the battery holding a charge/simply being discharged?

I'm going to try to make it to this winter on the current battery. It's a silver DieHard 51; C2 code(not the 51R like I should have go figure), but it was from 2008 according to the sticker on the front. So, I'd imagine had I not killed it and not knowing what the previous owner did before purchasing the car at the end of 2009...perhaps it would have went another 2-3 years. Not a bad battery, but can't take abuse and live through it. I'm hoping the Mega Tron Interstate or perhaps an Optima can handle it.

BTW: Charged the battery for 13 hours at 12V 2A, now currently finishing off the charge at 12V 6A for another 2 hours.
If anything is damaging the battery, it's that battery charger. You need to use a multi-step battery charger so you don't cook the battery plates. The chargers I listed keep the charge voltage constant while automatically varying the charging amps down to about 1 amp where from there it does a float charge at 13.5v.
__________________

imzjustplayin is offline   Reply With Quote
Old 07-09-2011, 09:00 PM   #33
Registered Member
 
add|ct's Avatar
 
Join Date: Jun 2010
Posts: 534
Country: United States
Re: Changed my Battery, increased MPG by 10%

It figures that I'm finishing off the overall life of the battery, so that's why I'll be replacing it very soon. I suppose there is no need to do what I did just now again, but I went on the advice of my dad. He used the type of chargers you mentioned when he worked for Interstate Battery and serviced distributors. He used the term 'cook' the battery as well. I guess my method with this particular 'manual' charger(not really) is too aggressive and less user-controlled?
__________________
'92 Civic VX, Canadian model
add|ct is offline   Reply With Quote
Old 07-10-2011, 08:32 AM   #34
Registered Member
 
imzjustplayin's Avatar
 
Join Date: Dec 2011
Posts: 720
Country: United States
Re: Changed my Battery, increased MPG by 10%

Quote:
Originally Posted by add|ct View Post
It figures that I'm finishing off the overall life of the battery, so that's why I'll be replacing it very soon. I suppose there is no need to do what I did just now again, but I went on the advice of my dad. He used the type of chargers you mentioned when he worked for Interstate Battery and serviced distributors. He used the term 'cook' the battery as well. I guess my method with this particular 'manual' charger(not really) is too aggressive and less user-controlled?
The reason for that is that you likely have a 'dumb' charger while if you intend to preserve your battery, you need a 'smart' charger. The steps involved to use a 'dumb charger' in a 'smart' way would mean you'd be spending too much of your time trying to charge the battery yourself. Frankly, I think it's better money spent on a good battery charger that will double the life of this battery then to buy another battery and continue what you're doing. I've got a bank of batteries that are 10 years old that still work great primarily because they've been float charged their whole lives and so aren't sulfated like the car batteries we're talking about which do not receive such nice treatment. Assuming the lead plates haven't shed themselves and fallen to the bottom of the battery, the sulfation is the primary reason for diminished battery capacity. You can get rid of the sulfation either through this special liquid you put in each battery cell which I can't attest to or you can try a battery charger with a de-sulfate function which sends a 2-6mhz signal through the battery after it has charged the battery in order to break up the sulfate crystals so that you can utilize the battery again.
imzjustplayin is offline   Reply With Quote
Old 07-13-2011, 05:08 PM   #35
Registered Member
 
add|ct's Avatar
 
Join Date: Jun 2010
Posts: 534
Country: United States
Re: Changed my Battery, increased MPG by 10%

I had my battery tested at a local Interstate Battery and it came back as 'marginal'.

Their device gave a printout. The battery; once the engine was shut off(from home this was a 6-7 mile drive), the battery tested at 13.4v, it was 95 degrees outside or so. The technician mentioned something about the temperature being 123 degrees or something to that effect, not sure if he meant the battery internally or the engine bay? Anyway, their printout said exposure to extreme heat or 21 degrees F or below could cause the battery to fail. I'm not sure if it matters, but he also mentioned that he entered the CCA into the device as 550, the battery registered 473 CCA. Does this mean it's alright? I believe this model 51 Die Hard came with 465, so it doesn't seem exactly right to me. Perhaps it's either Cranking amps or the number was randomly chosen based on the percentage of CCA vs the number it was given(86% remaining CCA from stock 550 = 473)???

Anyway, upon restart the alternator was shown putting back 14.1-14.2 or so, also testing via the device at the battery terminal. So...see if it makes it through the summer? Stock this car needs 410 CCA to start.
__________________

__________________
'92 Civic VX, Canadian model
add|ct is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Fuelly Android App - eehokie Fuelly Web Support and Community News 2 07-14-2010 09:59 PM
Fuelly for Maintenance? brandonrossl Fuelly Web Support and Community News 11 01-05-2009 04:09 AM
Feature Request: City vs Highway jethrographic Fuelly Web Support and Community News 1 08-08-2008 10:43 AM
When filling up today to check my mileage I had an issue. HondaTorneoSiR Experiments, Modifications and DIY 2 06-12-2008 07:28 AM
hi SuperRobot46000 Introduce Yourself - New member Welcome 6 07-15-2006 07:44 PM

Powered by vBadvanced CMPS v3.2.3


All times are GMT -8. The time now is 12:47 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.