Yes of course his discharge graphs are the best. But most of those cons don’t really apply to us, only to vapes.
The voltage on LiFePO4 does sag a lot compared to li-ion, but it actually “feels like” it sags less when you’re on the board, because the sag is relatively constant across the whole discharge cycle.
Solder paste melts?! Didn’t realize that and thought it was just conductive paste. Sounds potentially much easier for soldering and could prep the wires with solder in advance. Or under a tab.
How many welds equals what conductive and worth doing I want to find out. Gotta borrow a fluke.
Occasionally but not much, no. I’d be concerned I guess about any unmelted paste being left over. Maybe that’s not a good idea after all. Unless you used hot air instead of spot-welding.
Put the liquid solder under all the tabs n tape it all down then hot air sounds good. I’ll have to try it. And can do it w the multimeter connected and see how it changes.
Solder paste is basically tiny little balls of solder suspended in a flux solution. Flux being corrosive, in general, I would not recommend leaving solder paste that was not heated to its melting point and then cleaned with flux remover. There is no clean flux solder paste that exist but still I wouldnt.
Crazy idea: Bestech releases a small current BMS (like 8A charge, 8A discharge) whose JST connector, instead of this:
B0 (some models)
B1
B2
B3
B4
B5
B6
B7
B8
B9
B10
for example, it looks like this
P- (some models)
C-
C-
B0
B0
B1
B2
B3
B4
B5
B6
B7
B8
B9
B10
so that the JST cable is the only wire you need to run to the BMS at all. And the conductors are doubled so the 3A rating on the JST connector is enough to do 4A charging directly through it.
I want to start at the top of a mountain road with an almost flat battery and go downhill engaging the brakes and see how far I need to go to get a full charge.