16152Re: [RoboMower] Possible battery issue? - RL1000
- Jun 27, 2009I finally got myself a voltmeter, and with the mower connected to the dock,
the charger gave me a reading around 24. Taking the battery pack out of the
mower, each of the two batteries registered around 12 (they are not well
charged -- which is my problem). Not sure what else to do here, I've
checked everything else, connections seem ok, etc.
On Mon, Jun 15, 2009 at 4:54 PM, Danny Miller <dannym@...> wrote:
> YES. There is an issue.
> That is the UNLOADED voltage that the charger puts out. An operational
> battery electrically connected to the charger would drag the voltage
> down to probably 28.4v as an absolute maximum when fully charged.
> Normally, I'd expect that starting from a battery at 23.1v, putting it
> on a charger would yield a voltage in the 24v range at first and the
> voltage will gradually rise to the 28v range over a course of hours.
> Either the battery has a bad connection from the batt to the charging
> contacts, or there is a bad connection inside the pack, or there's a
> problem inside the charger itself. Or the battery could be bad, that is
> normally the case, but since you replaced them I would tend to discount
> this possibility.
> David Christopher wrote:
> > Thanks for the help guys -- I will check all the connections, steel
> > connectors, etc -- have not done so yet. I also (unfortunately) don't
> > a voltmeter, so I will go pick one up at Radioshack hopefully today.
> > In the meantime, I did just look at what the controller said (while the
> > mower was still docked) -- it said:
> > Battery Voltage: 23.1
> > Charging Voltage: 33.6
> > Do either of these numbers indicate any issue?
> > Thanks
> > Dave
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