Page Index Toggle Pages: 1 Send TopicPrint
Normal Topic Battery Charging Question (Read 85 times)
MrRiden
God Member
*****
Offline


R65LS Phoenix, Arizona

Posts: 1284
Location: Phoenix, AZ
Joined: 11/13/06
Battery Charging Question
11/21/18 at 18:12:50
Post Tools
I'm about to pull the trigger on a UB12220 battery from Amazon but was wondering about charging. Is there anything I need to be aware of or can I toss this on my Battery Tender Jr / 30 yr old sears charger without causing an unfortunate event? Thanks.
  

"We can't stop here. This is bat country".
Back to top
WWW  
IP Logged
 
Bob_Roller
Global Moderator
*****
Offline


  GMT -7 Hours

Posts: 8695
Location: Tempe, Aridzona USA
Joined: 11/13/06
Gender: Male
Re: Battery Charging Question
Reply #1 - 11/21/18 at 18:38:42
Post Tools
Battery tender will work fine on the AGM battery .
You don't have to keep it on all the time the AGM's don't discharge as fast as a flooded type battery .
Don't use a trickle charger, they never stop charging .
  

'81 R65
'82 R65 LS  
'84 R65 LS
'87 Moto Guzzi V65 Lario
'02 R1150R
Riding all year long since 1993 .
I'll give up my R65, when they pry my cold dead hands from the handlebars !!!!!
Back to top
 
IP Logged
 
Barry
God Member
*****
Offline



Posts: 4859
Location: England
Joined: 07/07/08
Gender: Male
Re: Battery Charging Question
Reply #2 - 11/22/18 at 06:31:22
Post Tools
Even if you only use the bike once every 2 weeks an AGM battery won't need charging and I agree with Bob that it's not a good idea to keep them permanently on trickle charge unless you are very confident that the charge voltage is matched to the battery. I wouldn't do it simply because with an AGM it's unnecessary.

As to charging your new battery when it is necessary, any charger will do provided the recommended charge voltage of 14.6 - 14.8 volts is not exceeded. The voltage must be reduced to 13.6 - 13.8 volts when they reach full charge. An unregulated charger can damaged an AGM if the voltage is allowed to remain too high.


http://files.upgi.com:8086/UPGFileService.svc/GetSpecSheet/40582
  

Barry Cheshire, England 79 R45
Back to top
 
IP Logged
 
Mrclubike
God Member
*****
Offline



Posts: 869
Location: O'Fallon, MO USA
Joined: 09/28/14
Gender: Male
Re: Battery Charging Question
Reply #3 - 11/22/18 at 10:25:28
Post Tools
The only reason I put my AGM on the charger is when I am going to start the bike when it is below 40F just so it has more power to crank the motor over with the Bosch starter
In Arizona I don't see a huge need for a battery tender

AGM's do like a higher charging voltage than a normal flooded battery like 14 to 14.5
I run my Odyssey at 14.6
Odyssey recommends up to14.8

  

Buzzing along on my tubeless 82 R65
Industrial mobile equipment Mechanic  for over 35years  
Back to top
 
IP Logged
 
Mrclubike
God Member
*****
Offline



Posts: 869
Location: O'Fallon, MO USA
Joined: 09/28/14
Gender: Male
Re: Battery Charging Question
Reply #4 - 11/22/18 at 10:32:35
Post Tools
The AGM really likes it colder
Looks like the hotter it is the more they discharg
  

Dischargerate.PNG ( 29 KB | 5 Downloads )
Dischargerate.PNG

Buzzing along on my tubeless 82 R65
Industrial mobile equipment Mechanic  for over 35years  
Back to top
 
IP Logged
 
Bob_Roller
Global Moderator
*****
Offline


  GMT -7 Hours

Posts: 8695
Location: Tempe, Aridzona USA
Joined: 11/13/06
Gender: Male
Re: Battery Charging Question
Reply #5 - 11/22/18 at 10:38:39
Post Tools
Heat shortens the life of  battery .
The average service life of a motorcycle battery here is 24-30 months .
Auto battery 36-40 months .
That's why I've gone to generic AGM batteries .
The last Odyssey battery I had, lasted 19 months .
  

'81 R65
'82 R65 LS  
'84 R65 LS
'87 Moto Guzzi V65 Lario
'02 R1150R
Riding all year long since 1993 .
I'll give up my R65, when they pry my cold dead hands from the handlebars !!!!!
Back to top
 
IP Logged
 
Barry
God Member
*****
Offline



Posts: 4859
Location: England
Joined: 07/07/08
Gender: Male
Re: Battery Charging Question
Reply #6 - 11/22/18 at 12:15:37
Post Tools
A useful chart posted above by Mrclubike. It gives a clear indication of when to charge a battery in storage. In my climate I'm good for 6 months minimum but at 30 Deg C only 3 months.  A normal wet cell battery will discharge a lot faster though so an AGM is still the way to go.
  

Barry Cheshire, England 79 R45
Back to top
 
IP Logged
 
Page Index Toggle Pages: 1
Send TopicPrint