Hauling/Frying

 I overcharged one of the 16 banks of batteries to over 3.7V, a harsh reminder that I still haven't built a BMS.  I've experimented with several circuits - analog, digital, ucontrollers, etc - but still haven't found one that kicks in fast enough; if you kick in too early, you end up shunting power to heat sinks before you need to, which wastes a ton of power and makes a big space heater (when all but the last cell have charged, the shunting circuit is converting 1500 Watts to heat)!

I created an SPDT circuit that doesn't require shunting and therefore requires no heat sinks.  Unfortunately, it requires inserting relays in between each cell, something I didn't think of doing in my original design.  I've done too much soldering at this point to add this design.  Maybe I'll implement this on my electric car project (TBA)?

Blowing out my homemade 'oh fuck' resistor bank trying to drop the overcharged cell.  Oops.

Just a side view.

awesome bike bell

Bringing old clothes to Savers (like Goodwill, but better)

unnecessarily monitoring battery Voltage using 'Recycled Treasure' (shit that's too broken to sell but works enough that we don't want to throw it out).