flight4
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- Jan 21, 2009
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So this turned out to be a little more bother than expected. Starts out easy, some wires and R/C connectors. Goes together easily enough. But then it doesn't work. Doh!
Bang my head on the workbench for about a day, and then hit the web. Not much info on troubleshooting LiPo protection ICs. But as always nuggets can be found. Turns out you have to reset the circuit with an external charger after assembly before it will output a voltage. Then it works great.
Now I realize I can build my own field box battery packs, with charge/discharge protection and even balancing circuits, for a lot less than using R/C batteries, even as cheap as they are. Mainly because the individual LiPo cells can be had pretty cheap, and don't have to mess with those slightly expensive R/C connectors. But still not as cheap as a SLA or lawn tractor battery. But those guys aren't going to fit inside the field box either.
I didn't have any heatshrink tubing big enough to cover the circuit and wiring after I assembled it. So that will come later. And I need to get a different LiPo charger. The fancy one I have is for R/C packs and it doesn't like the 'protected' pack all that much. No big deal.
Enjoy the pix!!
Bang my head on the workbench for about a day, and then hit the web. Not much info on troubleshooting LiPo protection ICs. But as always nuggets can be found. Turns out you have to reset the circuit with an external charger after assembly before it will output a voltage. Then it works great.
Now I realize I can build my own field box battery packs, with charge/discharge protection and even balancing circuits, for a lot less than using R/C batteries, even as cheap as they are. Mainly because the individual LiPo cells can be had pretty cheap, and don't have to mess with those slightly expensive R/C connectors. But still not as cheap as a SLA or lawn tractor battery. But those guys aren't going to fit inside the field box either.
I didn't have any heatshrink tubing big enough to cover the circuit and wiring after I assembled it. So that will come later. And I need to get a different LiPo charger. The fancy one I have is for R/C packs and it doesn't like the 'protected' pack all that much. No big deal.
Enjoy the pix!!