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  #51  
Old 1 Week Ago
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Good explanation by Gospelman for why the battery is not fully charging
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  #52  
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This thread, with a possible poor connection from the charger/maintainer, is an illustration of issues to plugging in a battery for several months. Forunately Jump is monitoring his.

Most would do will with a processor controlled charger on a 2 amp setting overnight, every 2-4 weeks. 2 weeks if a security system is involved.

From a thread Dec 2016:

A recent thread discussed concern over battery self-discharge.
A no load AGM is only about 2% per month…at cold temperatures.
This is based upon a clean battery case. Crud on the case will allow current flow, post to post and greatly accelerate / augment discharge.

If connected to a Sportster, there is also load with the key off:

Voltage regulator 1 milliamp (0.001 amp)
Speedometer 1 milliamp (0.001 amp)
Tachometer (if equipped) 1 milliamp (0.001 amp)
TSM (non-security models) 1 milliamp (0.001 amp)
TSSM (disarmed) 3 milliamp (0.003 amp)
TSSM (armed) 3 milliamp (0.003 amp)
TSSM (storage mode) 1 milliamp (0.001 amp)
HFSM 1 milliamp (0.001 amp)
Security siren 20 milliamp (0.020 amp): Siren will draw for 2-24 hours from time motorcycle battery is connected and 0.05 milliamperes (0.00005 amp) once siren battery is charged.

See page 11 for discharge rate and notice the line for 7 milliamps: http://www.yuasabatteries.com/pdfs/TechManual_2014.pdf

Note: The sample battery for discharge rate is an AGM and is 50% discharged in 60 days with a drain equal to the load of a voltage regulator, speedo, tach, and TSSM. With only a regulator, speedo (no tach) and TSM, the load is only ~ 3 milliamps and 50% discharge would be about 120-150 days.

State of Charge (AGM battery)
12.8+ 100%
12.6 75%
12.3 50%
12.0 25%
11.8 Zero
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  #53  
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13.+ for bulk charge and cell equalization.
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  #54  
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Quote:
Originally Posted by Gospelman View Post
I think that NOCO's advice concerning the SAE connector is sound: I use them on my Optimate charger and they fail to connect properly every once in a while, causing the red "Fail" LED to light. Disconnecting/reconnecting usually cures the problem. TBH, the connectors never really "feel" right to me in use.
Thanks, Gospelman. I understand the "feel" you're talking about... and I've experienced that before in other circumstances, but this connection/fit does feel solid... maybe because all the pieces are new?
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  #55  
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Quote:
Originally Posted by sportsterdoc View Post
This thread, with a possible poor connection from the charger/maintainer, is an illustration of issues to plugging in a battery for several months. Forunately Jump is monitoring his.

Most would do will with a processor controlled charger on a 2 amp setting overnight, every 2-4 weeks. 2 weeks if a security system is involved.

From a thread Dec 2016:

A recent thread discussed concern over battery self-discharge.
A no load AGM is only about 2% per month…at cold temperatures.
This is based upon a clean battery case. Crud on the case will allow current flow, post to post and greatly accelerate / augment discharge.

If connected to a Sportster, there is also load with the key off:

Voltage regulator 1 milliamp (0.001 amp)
Speedometer 1 milliamp (0.001 amp)
Tachometer (if equipped) 1 milliamp (0.001 amp)
TSM (non-security models) 1 milliamp (0.001 amp)
TSSM (disarmed) 3 milliamp (0.003 amp)
TSSM (armed) 3 milliamp (0.003 amp)
TSSM (storage mode) 1 milliamp (0.001 amp)
HFSM 1 milliamp (0.001 amp)
Security siren 20 milliamp (0.020 amp): Siren will draw for 2-24 hours from time motorcycle battery is connected and 0.05 milliamperes (0.00005 amp) once siren battery is charged.

See page 11 for discharge rate and notice the line for 7 milliamps: http://www.yuasabatteries.com/pdfs/TechManual_2014.pdf

Note: The sample battery for discharge rate is an AGM and is 50% discharged in 60 days with a drain equal to the load of a voltage regulator, speedo, tach, and TSSM. With only a regulator, speedo (no tach) and TSM, the load is only ~ 3 milliamps and 50% discharge would be about 120-150 days.

State of Charge (AGM battery)
12.8+ 100%
12.6 75%
12.3 50%
12.0 25%
11.8 Zero
Thanks, sportsterdoc. After two days of being installed and connected to the NOCO, it pretty much does the same thing... bounces from 'Standby Solid Orange' to the '25%' light. Still installed, a multi-meter set at 20 V DC shows 12.34 at most… after running engine for a few minutes, about 12.45. Now, with the battery out of the bike connected to the NOCO w/alligator clips, it goes from 25% to 50% in 30 seconds, then to 75% in 5 minutes, then 100% after 2 more minutes. While the battery was out I cleaned up all terminals… minimal corrosion on the HD SAE ground (at the tank), none on the positive… but, when I looked inside the female side of the HD SAE plug, there looks to be some corrosion (certainly a color difference, not clean metal)… how to get in there to clean? Replace HD SAE plug? Use battery terminal grease? Replace battery all together to be safe?
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  #56  
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Mine lives on this one.
Obviously, I forgot to plug it up the last time I rode.
But the orange light on the bottom goes to green when charged.
I bought it at Walmart 6 or 7 years ago.

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