As with any battery, you need a battery charger. They are not too expensive, just make sure that it not only charges at 10 amps, but also at 2 amps. Remove the neg. and pos. cable from the battery, and put the red wire to the positive terminal, and the black wire to the neg. terminal at a charge rate of 2 amps. The charger will tell you when the cycle is complete. May take a day or 2 if the battery is dead. Also make sure the water level is at the top line in the battery. Use only distilled water to top up.
Honda rebel
The Honda CMX450C "Rebel 450" was sold in the USA for the model years 1986 and 1987. There was no Rebel 400.
motorcycle
20w50 motorcycle oil, any brand.
10W30 or 10W40 motorcycle oil is recommended by Honda.
Take off the seat
Follow the cable rearward from the starter. It connects to the battery.
The average MPG depends on what type of Honda motorcycle you are riding on. For example, a 2005 Honda VLX600 Shadow gets 49 MPG, while the 2005 Honda Rebel 250 gets 73 MPG.
The top speed of the Honda Rebel motorcycle, is listed as 110 miles per hour. You can make adjustments to the fuel injector pump to increase the top speed.
Left side behind the plastic cover
Remove the right cover below the fuel tank and you get to the battery.
www.nada.com www.kbb.com/motorcycle