Passthrough mini mod

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IR_Efrem

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Feb 10, 2010
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Well I added a 9v connector to my passthrough. Ill also be adding a Deans Ultra plug to the wires. These plugs can handle as much voltage and amperage as 12gauge wire, so I am completely comfortable with their performance. The idea of adding the plug is to have a male/female side. When the PT is plugged into a USB source and the battery is in it I wont have to worry about the Female end accidentally shorting on something. I do not mind using my particular passthrough as a direct connect because it has a built in cut off time. And I am using NiMH batteries which are 'more' stable; I have been using them for RC purposes for years and have not had a single accident yet. The battery holder has a 9v connector on it BTW.

There is a lot of talk about safety here lately and I feel it is important for anyone to know that you should not do this if you are not comfortable with soldering properly (I use a soldering station and approved flux) and if you do not know the capability of your passthrough device. As mentioned mine has a cut off time. The circuitry is inside the end with the switch on it; this is independent of the PCB on the battery end (tested and verified on {MY} passthrough).

The leads from the 9v plug are soldered to the Voltage Out side of the PCB. I am using 5, 1.2v NiMH (2400mah) for an effective voltage of 6v. Load voltage at full charge is 5.56v. 4 batteries has an effective voltage of 4.8 and a load voltage of 3.95v. Before I even read about exploding batteries I knew many of the risks of using lithium and I prefer to stay inside my comfort/safety zone. I will stick with NiMH and keep the batteries away from my face. I really don't mind the cord at all.
 

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IR_Efrem

Full Member
Feb 10, 2010
31
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The battery holder holds 8 AA batteries. I have only put 5 into it for 6volts total.

The 9v battery connector plugs into the battery holder. This sits on my desk and is not portable at all. But it holds 2400mah NiMH batteries and lasts for days without charging or using the 3.7v passthrough battery. But, I can still use the passthrough as intended. I can also adjust the voltage by removing batteries. 3 = 3.6v ; 4 = 4.8v ; 5 = 6v...



Mission accomplished so, I'm all done trying.
 
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