back to 3 grab-and-go LiFePO4 battery

mark 2 LiFePO4 go box:


Although CCA worked ok for Field Day, I ran into hot wire problems when load-testing and trying to run other
high-current loads like inverters. Today I removed the CCA harness and rebuilt it using OFC. I also
upgraded the battery to SB50 leads from 8 to 6ga, so that should roughly quadruple the current capacity.

With having soldered quite a few SB50 and numerous large splices, I'd say my "torch soldering" skills have
improved considerably. I now use a combination of soldering gun, "bernsomatic" propane torch and small
butane torch as appropriate. Also wrapping jackets in polyimide film tape helps keep the jackets from
catching on fire with the torch flame so close to them.

I considered removing the PP35 that's up top with the SB50 (since I have the powerpole block) but it's not
that big of a deal to leave it so I did. I may also hard-mount my 300w LiFePO4 charge controller to it, but
the top is getting pretty crowded. I've currently got electrical tape covering all the USB and most of the
powerpole block ports to prevent dust etc from settling in the ports when not in use. The two uncovered ports
on the block are filled with a battery maintainer and an emergency light.

01 removed old CCA harness for sizing	02 gathering new components	03 creating splices	04 polyimide tape protects jackets from torch	05 positive splice soldered	06 ready to solder negative
07 polyimide tape made the sacrifice	08 preparing for assembly	09 assembly in progress	10 installed	11 power on	12 rev2 LiFePO4

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