Electrical Data from '96 - '02 Rebel CMX250 service manual:

BATTERY/CHARGING SYSTEM

Battery Capacity 12V- 6 Ah ( note: 72 W/Hours)
Current leakage 1 mA max
Voltage Fully charged   (20C/68F)  13.0 -13.2 V
Needs charging Below 12.3 V
Charging current 
Normal 0.6 A/10 h
Quick 3.0A/1.0 h
Alternator Capacity   190 W/5,000 rpm

Charging coil resistance

0.2- 0.6 ohm
Regulator/rectifier

'96- 2000

13.5- 14.0 V/5,000 rpm (regulated voltage)

After 2000 

14.6- 15.6 V/5,000 rpm


LIGHTS/FUSES

Bulbs
Headlight
 '96- 2000 12 V - 36.5/35 W  (Hi/Lo beam)
After 2000  12 V - 60/55W
Tail/brake light 12 V - 2/32 cp (7/27 W)
License light  12 V - 4 cp (8 W)
Front turn signal light 12 V - 32 cp (23 W)
Rear turn signal light 12 V - 32 cp (23 W)
Instrument light  12 V - 3.4 W
High beam indicator  12 V - 3.4 W
Turn signal indicator 12 V - 3.4 W
Neutral indicator 12 V - 3 W
Side stand indicator ('96-'00)  12 V - 2 W
Fuses
Main fuse 20 A
Sub fuse 10 A x 2