RoboSavvy Forum Robosavvy Forum: The largest online community of Humanoid Robot Builders 2007-09-11T07:12:01+01:00 http://forum.robosavvy.com/feed.php?f=4&t=1700 2007-09-11T07:12:01+01:00 2007-09-11T07:12:01+01:00 http://forum.robosavvy.com/viewtopic.php?t=1700&p=11034#p11034 <![CDATA[Battery Life]]>
After your RN is functioning on a battery for about an hour, it's possible to make a battery substitute. I built one mainly for long hours of programming, and so I don't have to recharge the battery every hour. I'm not swapping batteries, and only have one.

The power pack I built is really cool. It operates in multiple countries on either 120 or 240 vac, depending on where I'm traveling. It consists of a lead acid battery pack (4 AA's) in parallel with a power supply. There's 2 switches, one on the main power located on a switchable AC power strip, and one on the battery pack. I can switch back and forth from power pack to power pack plus batteries. The batteries act like a big filter. I can run this on other robots too. The clean filtered DC power is great for controller board and servos.

humanoido

Statistics: Posted by Humanoido — Tue Sep 11, 2007 7:12 am

]]> 2007-09-06T20:55:06+01:00 2007-09-06T20:55:06+01:00 http://forum.robosavvy.com/viewtopic.php?t=1700&p=10929#p10929 <![CDATA[Battery Life]]>
I have one or two questions.

First I thought I read somewhere that the battery pack would power the robot for an hour before needing a recharge. I have found that after about 5 – 10 minutes of movement the battery is dead. It appears that there is a significant current consumption just to hold the robot in its normal inactive standing state.

Is this correct or do I need a new battery back. The one I have is a 6V NMH type 1000mA/H. Are there any battery backs around with a higher capacity than this?

I am considering making up a lead to conect to a bench PSU just for development purposes. Has anyone else done this?

Statistics: Posted by FarmerJo — Thu Sep 06, 2007 8:55 pm

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