Batteries:
2 x Powerizer 25.9V 21AH LiPo (51.8V 21AH)
Charger:
Unknown Chinese 3A 29.4V Li Ion
Controller:
Crystalyte 4840 (48V 40A)
Conversion time and cost:
$1200 for motor/controller kit, $1100 for batteries, $300 for beefed-up custom front fork, and another $500 in general bike/component upgrades
Lighting:
B&M 4DToplight LED taillight