16109Re: [RoboMower] Possible battery issue? - RL1000
- Jun 16, 2009Thanks Danny. I have emailed FriendlyRobotics support but heard nothing
back yet. You'll have to excuse me, I'm a bit slow on these technical
voltage discussions -- not my area of expertise at all. :-) Are there any
specific things you think I can look at or try to do? Or does it sounds
like I need something new (power pack, something malfunctioning in the
charging base, etc). I did open the battery pack and the actual battery
connections look fine, from what I can tell.
I'm having to mow the lawn with my tractor - which is unheard of with a
robot sitting there doing nothing! :-)
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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