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Topic: Replacement 8D Battery Purchase, Finally! (Read 1874 times) previous topic - next topic

Re: Replacement 8D Battery Purchase, Finally!

Reply #25 –
So, due to a Glitch, I just received the Batteries 2 Days ago!  They did a Great Job in packaging, and I had liftgate service to my driveway!  I started charging the First Battery, before install, and it had a Voltage of 12.8v.  I charged it overnight, and after about 14 hours on my Smartcharger, @ 2.5 AMP Setting, it was @ 14.5v.  I wanted to see if I could get it to 14.7v, so kept it on charge for another 2 hours.  Checked the Voltage and it was 13.8v.....WHAT???  It also said Full on my charger so what Happened?  How could it Discharge?  That's quite a Mystery to me, at this point?

So, I started the Second Charge cycle, Battery # 2 had an initial Voltage of 12.1v, and is in the process of slow charging!  This time, if I get in the 14v range, I will just stop charging, I believe? I will attempt to put Battery # 1 on the Charger, and see if I can bump it up to the same as I get the other 2?  I sure hope that happens?  Anyway, I think this is going to be an improvement over OEM capabilities....we shall see?
Tom & Barb Root
'95, 40' U-320C SE, bought from Dave Head, 8/2017  FT Motorcade # 18196 Coach Build# 4663 October '94
2015 VW Golf Sportwagen, 1991 Suzuki Samurai, Off-Road Custom Build-Up, W/Toyota 22re mill, and a 2005 Chevy 2500HD, Duramax/Allison TOADS Will also pull a MacGregor 26X Powersailor 2001 Model, owned since new!

Retired SR Rocket Mechanic, FT Sales Associate @  FT of California, Escondido CA.!  and Retired USMC Gunnery Sergeant (Hence Retired Guns! ) Avionics Tech, on A6E Intruder & OV-10 Bronco Aircraft!  V/N Era Vet, and Desert Storm Participant.  Happily Retired now!

Re: Replacement 8D Battery Purchase, Finally!

Reply #26 –
A fully charged resting for 24 hour non connected 8d is 12.85 volts.  Max charging voltage is 14.15 to 14.35.

"Riding and rejoicing"
Bob
1997 U320 40' Mid entry, build 5132,  wtbi ce27, 4th owner
2007 Solara convertible
2 prodeco tech outlaw ss electric bikes

1095 watts solar
08 Ls 460 and a sc430
2000 Ford F-250 superduty 4x4

Re: Replacement 8D Battery Purchase, Finally!

Reply #27 –
Quote from: RetiredGuns –
So, due to a Glitch, I just received the Batteries 2 Days ago!  They did a Great Job in packaging, and I had liftgate service to my driveway!  I started charging the First Battery, before install, and it had a Voltage of 12.8v.  I charged it overnight, and after about 14 hours on my Smartcharger, @ 2.5 AMP Setting, it was @ 14.5v.  I wanted to see if I could get it to 14.7v, so kept it on charge for another 2 hours.  Checked the Voltage and it was 13.8v.....WHAT???  It also said Full on my charger so what Happened?  How could it Discharge?  That's quite a Mystery to me, at this point?

So, I started the Second Charge cycle, Battery # 2 had an initial Voltage of 12.1v, and is in the process of slow charging!  This time, if I get in the 14v range, I will just stop charging, I believe? I will attempt to put Battery # 1 on the Charger, and see if I can bump it up to the same as I get the other 2?  I sure hope that happens?  Anyway, I think this is going to be an improvement over OEM capabilities....we shall see?
Checking the spec sheet on your EV8D-330A-AT I see they recommend an initial charge at 14.4 to 14.7 (2.4 to 2.45 X 6 cells) and a float charge of 13.2 to 13.8 (2.2 to 2.3 X 6) so your charger floating at 13.8 although to me on the high end is not as good as the low end you are probably ok.  I would check the charge curve for your smart-charger.  I've found a big difference between different brands and models.  I also have found Lifelines available information on their website on AGM batteries an excellent source of information.  What stuck out to me the most was never going below 50% charge (approx 12.1 V).  Sounds like great batteries, I will watch for your updates.
97 U295 40, Build #5040, 6C8.3 325 HP
Oregon Continuous Traveler
Samsung Residential #RF20HFENBSR,
Xantrex SW2012, (3)AGM8D Hse, (2)AGM Grp24 Eng, Victron BMV-712, 1800w Solar 4 LG & 2 Sunpower
Extreme Full Body Pt w/hdlmps, new furn/floor, 4 down Lexus 2004 GX470 AWD curb weight 4,740 lbs
Prev: 1990 Barth, 10L 300 2 yrs; 91&92 Monaco Signature, 10 yrs, 10L C 300 &  6C8.3 300; 1997 ForeT 6C8.3 325 since May 2017.  Employed by Guaranty RV 14+ yrs.  Former VW New Car Dlr/Service Dlr, Sales Mgr, Rv Sales, and Service Adviser from 1968-2017
"Don't criticize what you can't understand" Bob Dylan

Re: Replacement 8D Battery Purchase, Finally!

Reply #28 –
Quote from: Caflashbob –
A fully charged resting for 24 hour non connected 8d is 12.85 volts.  Max charging voltage is 14.15 to 14.35.



I was informed that these Batteries like it better to be charged @ between, 14.1v to 14.7v?  A bit higher, I realize, than most specs call for!  You may be correct about a Battery at Rest, but this was measured at 14.5, then I put it BACK on the charger, and it DROPPED within 2 hours to that 13.8v.....I just found that odd, I guess?  After 24 hours at rest, I would like it at 13.5, or so?  Anyway, just Learning about this stuff?  I have Not really had to monitor Batteries like this, in decades, so I am probably being a bit too picky, and certainly very rusty perhaps?  I just would like to get great service from them, and do Not want it to be My fault, if they do not provide acceptable service, I guess?
Tom & Barb Root
'95, 40' U-320C SE, bought from Dave Head, 8/2017  FT Motorcade # 18196 Coach Build# 4663 October '94
2015 VW Golf Sportwagen, 1991 Suzuki Samurai, Off-Road Custom Build-Up, W/Toyota 22re mill, and a 2005 Chevy 2500HD, Duramax/Allison TOADS Will also pull a MacGregor 26X Powersailor 2001 Model, owned since new!

Retired SR Rocket Mechanic, FT Sales Associate @  FT of California, Escondido CA.!  and Retired USMC Gunnery Sergeant (Hence Retired Guns! ) Avionics Tech, on A6E Intruder & OV-10 Bronco Aircraft!  V/N Era Vet, and Desert Storm Participant.  Happily Retired now!

Re: Replacement 8D Battery Purchase, Finally!

Reply #29 –
Quote from: Jack Lewis –
Checking the spec sheet on your EV8D-330A-AT I see they recommend an initial charge at 14.4 to 14.7 (2.4 to 2.45 X 6 cells) and a float charge of 13.2 to 13.8 (2.2 to 2.3 X 6) so your charger floating at 13.8 although to me on the high end is not as good as the low end you are probably ok.  I would check the charge curve for your smart-charger.  I've found a big difference between different brands and models.  I also have found Lifelines available information on their website on AGM batteries an excellent source of information.  What stuck out to me the most was never going below 50% charge (approx 12.1 V).  Sounds like great batteries, I will watch for your updates.


Thanks!  I agree! So, what I experienced was a FLOAT Charge, even though it had reached 14.5v?  That still has to compute with me?  LOL  There is also a Chart, that also noted that these batteries can go 80% DOD, without significant damage, albeit less cycles would be attained, of course?  I cannot find it right now, but will post, when I do!
Tom & Barb Root
'95, 40' U-320C SE, bought from Dave Head, 8/2017  FT Motorcade # 18196 Coach Build# 4663 October '94
2015 VW Golf Sportwagen, 1991 Suzuki Samurai, Off-Road Custom Build-Up, W/Toyota 22re mill, and a 2005 Chevy 2500HD, Duramax/Allison TOADS Will also pull a MacGregor 26X Powersailor 2001 Model, owned since new!

Retired SR Rocket Mechanic, FT Sales Associate @  FT of California, Escondido CA.!  and Retired USMC Gunnery Sergeant (Hence Retired Guns! ) Avionics Tech, on A6E Intruder & OV-10 Bronco Aircraft!  V/N Era Vet, and Desert Storm Participant.  Happily Retired now!

Re: Replacement 8D Battery Purchase, Finally!

Reply #30 –
Once a charger is removed from a battery, it won't stabilize the voltage reading completely until 6 hours later. It will get close in a couple of hours but you will have to wait.

Pierce
Pierce and Gaylie Stewart
'93 U300/36 WTBI
Detroit 6V-92TA Jake
1140 watts on the roof
SBFD (ret)