Picked up two Metro boards from a stellar friend today - Shoutout SMLS!!!
One was a Original X22
the other a Pathfinder
The story behind The X22 was that it fell into some sort of water resivoir & basically fried everything within. Smls took it upon himself to give this board a chance at a better life & I plan to bring it back better than ever. Whether I’m going to keep it original is a teetering question.
The story behind the pathfinder is that it basically somehow had “radio control issues & uncontrollably accelerated into a tree” & blew the pivot pin off the hangar. But seems to work otherwise. I’ll have to do a further damage report in the future.
The Battery that is currently sitting it is a different battery that was given to Smls some time ago to reassemble & get this thing back up & running.
So I decided to go clean the internals out.
While I was cleaning the internals I wondered how different that hangars between the two boards could actually be. Maybe enough to swap the x22 hangar to that pathfinder ? Yes it totally works.
After turning the pathfinder on & confirming the puck works I set it aside.
The x22 also came with a replacement MESC
Metro+vesc? But I’m unsure the specs of this controller or whether it even works…
I have a spare 12s Xenith VESC. That is If I decide to stay at 12s & if the MESC is fried or whatever. But I have this urge to go high voltage…. Specifically 20s voltage.
Time to go to bed & dream of what the x22 could be
Zzzzz
Tito trucks, 3 links, or something I design & make myself?
2wd or Awd?
12s or 2000s?
Hmmmmmm….
Mmmmm kind of sounds like playing with fire
Wouldn’t I have to completely disassemble the pack to measure each cells voltage?
(rip the nickel off the cells)
I’m capable of doing so but idk if it’s worth it.
@fessyfoo
Ah that makes sense.
I was more worried about the cells individually but I guess the bms would have taken care of it as long as it had power to balance each p groups.
The original Metroboard batteries (blue shrink wrap, no Duck Battery Systems labels) are all built like absolute dogshit. I wouldn’t charge one in my house if it was fresh out of the box and you paid me.
it uses a discharge BMS, meaning that all the current for running your motors runs through the BMS. If you pull too much current (the BMS is only rated for 40A) then the BMS cuts power to your board. This leaves you without power or brakes, and can also blow your ESCs if you’re moving fast, because the power your motors are generating now has nowhere to go.
the spot welds are terrible. When I disassembled one of these packs to inspect it, the nickel fell right off the cells. The pack in question was brand new out of the manufacturer’s packaging.
the series connections are folded nickel, which loves to fatigue and break over time.
the solder joints were all horrible
the cells used were inconsistent (some packs had 30Q’s, some had Panasonic GA’s, etc.) but all the cells used were crap for this application, especially compared to what we have today.
there was little to no fishpaper used, and the balace wires are laid in a disorganized mess right against the cells
have you dropped off assmebled packs?
i was reading call2recycles stuff and thinking maybe i could drop it off at one of the bike battery drop off locations?
Not a manufacturing defect. Metroboard asked for that.
It’s because the Metroboard X originally used two single ESCs, so they had their battery manufacturer put two leads on the battery packs. When they switched to using a dual ESC, Ilan thought it would be a smart idea to have that little connector made, to join the two battery leads into one.
I’ve been dreading doing this but I need to do it asap Im just afraid they are gonna turn me away. I have two different packs that I need to get rid of that are toast.
