Battery Tender Jr

Discussion in 'Electrical' started by Jack Klarich, Sep 16, 2016.

  1. Jack Klarich

    Jack Klarich Expert Member

    18,544
    153
    399
    The reason that the green light doesn’t come on immediately is that when the charger first comes on, the battery is sitting there, fully charged, at a voltage of about 12.9 volts. The charger immediately tries to bring the battery voltage up to about 14.5 volts. This takes a finite amount of time, although it should only be a few minutes if the battery is fully charged. Then, when the battery reaches 14.5 volts, the charger will hold it there until one of two things happen. Either the battery charge current will drop to less than 0.1 amp (from an initial value of 1.25 amps) or, if the current does not drop below 0.1 amp, then the charger will hold the battery voltage at 14.5 volts for 6 to 8 hours.



    Note: It only takes a momentary AC power outage to cause the Battery Tender Plus battery charger to

    reset.


    Smart technology I would guess the battery is being checked for state of charge, I unplug and replug mine it goes right to flashing green

    Much better unit than my old Diehard I got my 10 percent discount on
     
    Last edited by a moderator: Sep 16, 2016
    gator508 and coopernicus like this.
  2. coopernicus

    coopernicus Junior Member Contributor

    583
    48
    59
    I use battery tender on both rider mowers too. One mower is going on 6 years with same battery.
     
    Jack Klarich likes this.
  3. gator508

    gator508 Senior Member

    2,308
    68
    81
    I have a Deltron Battery Tender Jr. for the bike, works great and does exactly what Jack is talking about, flashing red when first plugged up to the bike and then flashing green and then steady green when its ready. Only takes a couple of minutes.

    Related, I bought a Shumacher tender for the boat battery which I will use during the off season. It was on sale at WallyWord for $19.99:)
     
    Jack Klarich likes this.
  4. jamesearl

    jamesearl Senior Member Contributor

    1,056
    73
    120
    I've had 2 tenders,the first one I fried by getting off my bike and leaving the ignition on,after plugging the tender in..Had to have the battery charged over a couple of days.I'm still using the 2nd one.It's smaller,I plug in after every ride.
     
    Jack Klarich likes this.
  5. Jack Klarich

    Jack Klarich Expert Member

    18,544
    153
    399
    Did your coil or switch over heat also?
     
  6. rusntx

    rusntx Active Member Contributor

    375
    38
    44
    My Battery Tender functions (lights) as mentioned above as well. Had a Schumacher for years that worked well too. I plug in after each ride as well.
     
    Jack Klarich likes this.
  7. jamesearl

    jamesearl Senior Member Contributor

    1,056
    73
    120
    No.
     
    Jack Klarich likes this.
  8. Jack Klarich

    Jack Klarich Expert Member

    18,544
    153
    399
    Good deal, I had a friend it happened to, I had a spare coil @ work in my tool box and 1 @ home Stock HD dual fire