@eequip2
hi I ordered 8 packs from you. They seem a ok. I also ordered 6 from an ebay seller during christmas. The first 6 I chopped down to 10 and 11 then wired those in series for 21s then paralleled 3 for a 21S9P 88v pack no bms. I've ridden 5k kms so far without a problem.
Why 9P? Because thats all that would fit under the seat of my Yadi X5. Why 21S because my OE controller limits volts to 88. The Yadi has an excellent FOC super silent smooth efficient regen controller and I wasn't willing to go down the rabbit hole of changing the controller at the time.I already had an upgraded 20S12P setup in the OE battery box.
Recently I upgraded controllers to the Yuyang King YKZ120150. Its a beast but its square wave noisy and came with mismatched phase wires. It runs rough - sort of abrupt and jerky. However the 9P handles the yank of the 150 bus amps no problem stoplight to stoplight. In fact the OE 250V circuit breaker immediately became the weak link and stopped the fun just as it started. So I had to bypass that.
The saving grace is a readily available bluetooth app without which I'd be running in reverse. Oh and there's no regen and the upgraded hub motor is a mismatch for my rear disc so... like I said I did not want to chase my tail but QUARANTINE meh
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I recently ordered a Nanjing FOC 96450 controller which I hope solves the problem. 210 bus amps in a OE fitment form factor (189mm length) seems to good to be true but here goes. 7- 10 days and I'll find out.
I'm finally building the 26S12P battery with the second set of 8 I ordered from eequip2 which fits rather neatly in the OE battery box sans bms. One thing about these is the bms is junk and will let you down so don't rely on it. I blew one out with a wiring mishap and the pack read 17 then 15 then 14 volts and dropping haha. Once I cracked it open and read the pack directly it was 52.7v same as all after paralleling all 8 packs.
So TL/DR if your thinking don't just get em before they're GONE.
Also these packs are built with pure nickel + excellent welding and a sturdy plastic frame beneath the blue wrapping. I recommend leaving the packs intact as much as possible by cutting and assembling rather than ripping individual cells apart. The end with the thicker wires has the bms and if you slice gently half an inch down and peel the wrapping away the bms can be removed rather easily. I used a dremel with a cutting head to cut the plastic frame to size when adjusting the pack to my 88v needs. Be careful not to cut too deep or you'll be smelling toxic electrode juice. No they don't explode if damaged slightly.
BTW ICgogo on ebay sells a 109.2v charger and ships fast from CCP land. Nice quality unit with adjustable (1-9) amps.
I'm still trying to figure out where 1000's of these heavily discounted (>$2/ea for GA's?) packs came from. Defunct Uber jump bikes? But I thought those were 36v? Who knows - some silicon valley mishap is our come up so have at em!
