Nice But Pricey
Not blaming 420 Science on the cost, but $60 for a battery charge (w/o a battery) is steep. But it was needed and it works, so call it a win.
Fast Charger MV1
Much more convenient than waiting for USB charge. Highly suggest this addition.
Gmv1 fast charger
You GOTTA have it Charges in 2 hours. instead of 8 !!!