I have exactly 12 of these new in box GBS 12v modules from defunct ev company.
Rather than sell individually will offer them on here discounted. $500 x 6 modules.
$3500 for a slick Gem kit.
Theoretical 50miles level ground 25mph.
Assume 150watt per mile. Grant should be reporting accuracy soon.
320w each cell X 24s.
I also will supply high current active balancers at cost with these. $15 each cell. Still expensive, but slick solution. No bms or monitoring needed. These balancers work 24-7 charging low cells from high cells. (if needed)
These sell for $25 each from EV store.