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Unread 10-02-2006, 00:45
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Re: Using 7.2v charger as BackupBattery

Quote:
Originally Posted by MacFlightSierra
We have been experimenting with the camera for some time now, and among other problems, we noticed that the little 7.2v backup battery runs out very fast. We can only get 3-4 mins of operational time out of it, before the BackupBatt LED on the OI turns red and the camera stops working.
My idea was to use the IFI supplied charger for that battery, instead of the battery itself (hook up the charger output to the BackupBatt RC Input). I measured the charger outputs- 8.0v @ 750mA -just like the backup battery itself.
My question - is that idea safe (for experimental use of course)? Any chance it might screw up the camera or the RC itself?

any feedback would be greatly appreciated
thanks

we did that on our team, and found out the camera didnt work properly, we couldnt do anything in labview, it kept shorting out i guess you could say. at first we didnt know what the problem was, so we called the guy who invented the camera because we thought they sent us a defective one, but it was just that we needed to use the battery, and couldnt use the charger
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Unread 10-02-2006, 13:16
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Re: Using 7.2v charger as BackupBattery

In the rule book there is a rule about using a different backup battery as long as it was a 7.2 volt, that means you can if possible, grab a Vex battery, which is 7.2, but has 2000 mAh, instead of the measly 600 mAh that comes in the standard battery pack supplied by FIRST.

There are also standard RC car batteries that run at 7.2 Volts, which would allow you to do the same thing.

Another option is looking for the chart to make a backup charger from the 12 volt battery, however so far my team has decided not do this as we are already abusing our 12 volt battery.
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