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PocketBrain, the regulated powerpack looks like a great idea!
Can you tell me why it's much better than a regular 4xAA battery extender? (of which I have).
I'm guessing that:
- the regulated 5v DC helps the Ax behave much better. In that the NiMh cells will push out 5v DC straight without fluctuation? I've no idea on what i'm talking about. I'm not an EE. :)
- You can use more than the usual 4xAA NiMh of which I noticed you used 6. So, wired in parallel (or it series?) you'll get 2500mAh at a voltage of ~ 7.2V but regulated to 5V. As the mAh rating drops so does the V i'm guessing but it will be still useable for a longer period of time compared to an unregulated battery extender?
I've noticed that using my 4xAA battery extender (bought from pc-mobile.com) really needs quality NiMh cells.
When i've used lower quality NiMh cells i've noticed that the extender will power and charge the Axim x51v as long as you have at least 75% left ... maybe as low as 60% if i'm using freshly charged NiMh quality cells (I need to do more testing).
I've also noticed the strange phenomenon in that my cells were low and it ended doing some strange reverse charging thing with my Ax. When I checked the Axim later on I found the battery almost totally dead which alarmed me. I'm still not sure of the EE background of this situation. All I know is that if I want to charge my Ax I better have fresh charged cells ready to go.
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