Building a 20S12P pack for my Qulbix Q76R. Followed Quokka build pretty closely.
(240) Samsung 25R cells
0.2mm pure nickel sheet
Supower 100A BMS
8kw controller from PowerVelocity
QS205 motor
I've almost done all the spot welding just the +/- connections and BMS.
I'm having second thoughts if I should add some copper to go along with my nickel.
The other thing I'm struggling with is how to attach the leads. My plan was to solder the B- and Pos to a nickel sheet and then spot weld that to final connections. I have a Hakko soldering station but 8g seems to tax it and ends up getting everything hot. Thinking I need a soldering gun in the 150W range?
Waiting for lots of connectors to come in from HobbyKing so would like to have a game plan when they come in. Read lots of threads but haven't seen a great solution that stands out to me.
Here's where I am and some tests I did. Tried "wrapping" the nickel around the wire but that didn't work well. Separating wire to 4 strands was too much for my Hakko. The other side of the pack has #1 & #20 for +/- and those have not been spot welded yet.
(240) Samsung 25R cells
0.2mm pure nickel sheet
Supower 100A BMS
8kw controller from PowerVelocity
QS205 motor
I've almost done all the spot welding just the +/- connections and BMS.
I'm having second thoughts if I should add some copper to go along with my nickel.
The other thing I'm struggling with is how to attach the leads. My plan was to solder the B- and Pos to a nickel sheet and then spot weld that to final connections. I have a Hakko soldering station but 8g seems to tax it and ends up getting everything hot. Thinking I need a soldering gun in the 150W range?
Waiting for lots of connectors to come in from HobbyKing so would like to have a game plan when they come in. Read lots of threads but haven't seen a great solution that stands out to me.
Here's where I am and some tests I did. Tried "wrapping" the nickel around the wire but that didn't work well. Separating wire to 4 strands was too much for my Hakko. The other side of the pack has #1 & #20 for +/- and those have not been spot welded yet.