GCinDC said:yeah, FT, i assume you do what jozzer does, right? (jozzer is known for running a couple lipos.):
what connector is it you've got on those balance taps and what gauge is that? and please show us your bloody charger while you're at it..
Pick the cells that are 3.85 +/-0.05V. Charge them individually. Sort in order of Ah (a small sticker in the corner of each cell) then group them with roughly the same Ah per group - largest with smallest, medium with medium, etc..sn0wchyld said:
My favourite small signal connector Molex Microfit 3.0GCinDC said:what connector is it you've got on those balance taps and what gauge is that? and please show us your bloody charger while you're at it..
full-throttle said:Alright, enough of this mess [pun intended] in my thread :lol:
Pick the cells that are 3.85 +/-0.05V. Charge them individually. Sort in order of Ah (a small sticker in the corner of each cell) then group them with roughly the same Ah per group - largest with smallest, medium with medium, etc..sn0wchyld said:
Keep an eye on the pack while it's charging.
My favourite small signal connector Molex Microfit 3.0GCinDC said:what connector is it you've got on those balance taps and what gauge is that? and please show us your bloody charger while you're at it..
It's reasonably splashproof and very reliable. Needs a special crimper and prob not cheap, but that's not a big deal for someone who works around electronics :wink:
Bulk charger is just a 58.4V max LiFePo4
BC168 balance charger
That would be nice. Not sure if it's as critical as the Ah capacity though.sn0wchyld said:
full-throttle said:
obviously for smaller packs, less current demand, capacity usage, this may not be required, but i think few can argue with the method for big dangerous packs...Jozzer said:Spacey said:
Not that much - I've made/used/raced over a dozen vehicles with Lipo packs bigger than 10KW/h, and not had any problems yet. The main thing is to CHECK ALL PACKS VERY CAREFULLY. I don't mean just give them a discharge and charge - that's not enough. Our testing process is to cycle the packs twice looking for any anomolies (high IR cells or low capacity - 3-5% of packs will show faults here), then put them on the shelf for 6 weeks minimum and repeat (often a cell will have a higher self discharge rate than it's buddies and needs to be weeded out so it can't weaken your whole pack - another 2-3% of packs will be found faulty here).
The bigger the pack, the more careful you must be to have all good cells. So far, not a single pack that has passed this testing process has failed in use (out of perhaps a couple of thousand).
Course, that said, a 300KW vehicle is bound to be a bit dangerous..
So far so good. I couldn't get it to run exactly how I wanted, but after talking to them I know what setting to change. Will hopefully test it again on the weekend.shorza said:
That's right - the power stage and driver is inside the green box, size of a 9-fet controller. The interface is on the bars.Hyena said:
That's andreym, one of the developers and the owner of the Avanti D8 I was referring to previously.toft said:
They are not available for sale yet. The one I have is evaluation sample. The first production batch is in progress so shouldn't take long now.toft said:
full-throttle said:
? great to hear those guys are still in business!! hows the setup working so far? Did you get one with the BMS?
sn0wchyld said:full-throttle said:
ha, so much for starting to sell round, what was it... may or something
voicecoils said:sn0wchyld said:full-throttle said:
ha, so much for starting to sell round, what was it... may or something
Thanks for the ride on your sinewave controlled GNG D8, full-throttle! He's got a lot of pimpin' tech all on one nice bike. To top it off, we geeked out on BPM internals, bike tools & balance chargers after being treated to a great meal.
Sn0wchyld, yes we're still going! Growing & expanding capability. Maurice & I both post occasionally from the shop's glowwormbicycles E-S username.
