Rate

Number of amperes for charge or discharge. Also used to express time for either.

 

Reserve Capacity Rating

The time in minutes that a new, fully charged battery will deliver 25 amperes at 27°C (80°F) and maintain a terminal voltage equal to, or higher than, 1.75 volts per cell. This rating represents the time the battery will continue to operate essential accessories if the alternator or generator of a vehicle fails.

 

Resistance

The opposition to the free flow of current in a circuit or battery. It is commonly measured in Ohms.

 

Reversal

Reversal of polarity of cell or battery, due to excessive discharge, or charging in the wrong direction.

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