Cream of the crop by far is the skyRC3000 it’s like 120 USD and only does 4 batteries at a time so yeah.
After that it kinda depends what you all need to do with your batteries but the best allrounder for price seems to be the xtar vc4s.
Which supports both capacity testing and charging/discharging to storage voltage which is a rare feature in most chargers.
The Opus Bt-3100 (I think that’s the model number) is also good but it’s fairly old these days and hard to find.
If you haven’t noticed there’s not a single 8 slot charger that can do a full charge/discharge/charge capacity test out there which is probably the stupidest thing ever IMO.
Oh wow thanks! That’s exactly what I was looking for. I think I saw ProjectFarm (Youtube) using something similar for NIMH batteries a while ago, so I figured one probably existed for Liions. That resource you linked is super useful, had no idea it existed.
Yeah honestly lygte has much better tools to compare graphs compared to what mooch was doing. And he tests wayyyyy more cells. That website is quite the goldmine.
ESk8 needs high discharge, in packs that will get rattled, crashed, potentially neglected (left at non-storage voltages for extended periods of time). Your ass is literally on the line. They are also stuffed in hot, bolted closed places that limit emergency … access.
I wouldnt mess around with used cells. I don’t even like brand name cells from new vendors (that hg2 pack I recently made… will not be subjected to diy amperages).
Yeah I thought about that too, I do know the exact application of where these came from, and I know that their age varies too, so it is a risk to use them in the high amp draw of esk8.
I think one of the other options like a range extender, big battery backup, or in a scooter or bike where I can pad them well is a better choice.
I will also be getting 30Q cells from the same application and I plan on using those for esk8. Given how much more reliable they are, I am less worried about them.
I always try to store my boards around storage charge if they sit for more than a week, it’s a hard thing to do because then you have to either ride them till they get to storage or just not charge them all the way back up after riding.
Repurposed Cells aren’t all bad. @malJohann has some lifepo headway cells Of curious origin that he is putting to good use. But that’s a generally more resilient chemistry.
This. Far more resilient chemistry. My next battery pack will be A123’s in 20S6P, giving me the same Ah as I have now, at 500g less weight, and 300A capable output. They’re LiFePO4 too.
That’s pretty impressive, I’ve considered the A123 cells before, that’s what Boosted used for their boards I believe. I’m not sure why more people don’t use them, although it’s probably because you need more cells to get up the voltage that we usually ride at.
I second the range extender suggestion. I sort all my old salvaged cells to be put into range extenders / charge on the go / charge away from an outlet packs.
