Engineers Edge


Effects of Discharge Rate and Temperature on Battery Capacity and Life

Battery Application & Technology

The rate at which a battery is discharged and its operating temperature have a profound effect on its capacity and life. An example of the effect of discharge rate on battery capacity is shown in Figure A for traction batteries. This figure shows that batteries discharged at a low rate will be able to deliver a higher capacity than those discharged at a high rate.

The depth of discharge also affects the life of a battery. As shown in Figure B for a typical traction battery, discharges beyond about 80% of capacity can be expected to shorten battery life.

Colder operating temperatures will yield a little extra life, but also lower the capacity of lead acid cells. High temperatures yield higher capacity (see Figure C) but have a detrimental effect on life.

Discharge Time

Figure A
Typical effects of discharge rate on battery capacity

Depth of Discharge

Figure B
Typical effects of depth of discharge on traction battery life

Operationg Temperature Battery

Figure C
Typical effects of operating temperatures on traction battery capacity

Contribute Article Spider Optimizer

© Copyright 2000 - 2019, by Engineers Edge, LLC
All rights reserved
Disclaimer | Feedback
Advertising | Contact | Privacy Policy


Spider Optimizer

Engineering Book Store
Engineering Forum
Excel App. Downloads
Online Books & Manuals
Engineering News
Engineering Videos
Engineering Calculators
Engineering Toolbox
GD&T Training Geometric Dimensioning Tolerancing
DFM DFA Training
Training Online Engineering
Advertising Center

Copyright Notice

Publishing Program