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Message started by rl153 on 12/17/15 at 19:33:36

Title: battery tender jr
Post by rl153 on 12/17/15 at 19:33:36

how can you tell if your battery tender jr is overcharging your battery . what voltage should be the highest ,for a car , that your meter should read,when the tender is connected ,and the light is green? Thanks

Title: Re: battery tender jr
Post by Kris01 on 12/17/15 at 19:44:35

It should read 12VDC when the tender is off. I wouldn't rely on the "on" voltage (unless it's 18V or something). Is your battery cooked?

Title: Re: battery tender jr
Post by Steve H on 12/18/15 at 04:06:22

A fully charged 12v car battery should read 12.6v. Auto industry standard charging target voltage is 13.8v.

Title: Re: battery tender jr
Post by rl153 on 12/18/15 at 09:42:37

It seems like the starter races.I'm just wondering how high is too high ,as far as the voltage level when the charger is on. I think ours is over 14 volts ,but I have to check it again. would testing the voltage with the tender connected ,tell you anything more ,than testing the voltage immediately after the tender is disconnected?

Title: Re: battery tender jr
Post by Kris01 on 12/18/15 at 15:41:28

I wouldn't disconnect the tender and test the battery immediately. It'll give you a false reading that's too high. Let it sit for a little while and then test it.

By the way, Auto Zone can load test your battery for free. I'd call them first. I don't know how competent they are with motorcycle batteries. They might refuse to test it since it's out of their comfort zone.

Title: Re: battery tender jr
Post by rl153 on 12/18/15 at 15:48:15

thanks