• Skip to main content
  • Skip to primary sidebar

Homemade Circuit Projects

Need circuit help? Post them in the comments! I've answered over 50,000!

Blog | Categories | About | Contact | Calculators-online
You are here: Home / Battery Back up Time Calculator

Battery Back up Time Calculator


Typically, battery life is determined according to the current rating in milli-ampere per Hour which is shortened as mAh.

Ampere is an electrical model is accustomed to calculate the current circulation in the direction of the load. The battery life or strength often is calculated from the input current rating of the battery as well as the load current of the circuit.

Battery life will probably be increased in case the load current is minimum and vice versa. The estimation to determine the back up time of battery are typically mathematically calculated with the help of the following formula:

Battery Life = Battery Capacity in Milli amps per hour / Load Current in Mill amps * 0.70


1) Enter Battery Capacity in the first box below in (mAh)
2) Enter Device Consumption in the next Box in (mA)



÷

×
0.7*


Calculate
Estimated Hours (Backup Time)

*The factor 0.7 is an approximate figure for accommodating external impacts such as temperature, battery age, chemical balance, etc which can negatively affect battery life or its backup time.

Reader Interactions

Need Help? Please Leave a Comment! We value your input—Kindly keep it relevant to the above topic! Cancel reply

Your email address will not be published. Required fields are marked *

Primary Sidebar

circuit simulator image

Subscribe to get New Circuits in your Email

Categories

  • Arduino Projects (95)
  • Audio and Amplifier Projects (133)
  • Automation Projects (18)
  • Automobile Electronics (103)
  • Battery Charger Circuits (87)
  • Datasheets and Components (109)
  • Electronics Theory (149)
  • Energy from Magnets (27)
  • Games and Sports Projects (11)
  • Grid and 3-Phase (20)
  • Health related Projects (27)
  • Home Electrical Circuits (13)
  • Indicator Circuits (16)
  • Inverter Circuits (95)
  • Lamps and Lights (159)
  • Meters and Testers (71)
  • Mini Projects (28)
  • Motor Controller (68)
  • Oscillator Circuits (28)
  • Pets and Pests (15)
  • Power Supply Circuits (91)
  • Remote Control Circuits (50)
  • Renewable Energy (12)
  • Security and Alarm (64)
  • Sensors and Detectors (106)
  • SMPS and Converters (34)
  • Solar Controller Circuits (60)
  • Temperature Controllers (43)
  • Timer and Delay Relay (49)
  • Voltage Control and Protection (42)
  • Water Controller (37)
  • Wireless Circuits (31)

Other Links

  • Privacy Policy
  • Cookie Policy
  • Disclaimer
  • Copyright
  • Videos
  • Sitemap

People also Search

555 Circuits | 741 Circuits | LM324 Circuits | LM338 Circuits | 4017 Circuits | Ultrasonic Projects | SMPS Projects | Christmas Projects | MOSFETs | Radio Circuits | Laser Circuits | PIR Projects |

Social Profiles

  • Twitter
  • YouTube
  • Instagram
  • Pinterest
  • My Facebook-Page
  • Stack Exchange
  • Linkedin

Recent Comments

  • Swagatam on Simplest Full Bridge Inverter Circuit
  • Swagatam on Inverter LC Filter Calculator
  • Majaha Masuku on Simplest Full Bridge Inverter Circuit
  • Srecko Kovacevic on Inverter LC Filter Calculator
  • Swagatam on How to Make Dog Barking Preventer Circuit using High Frequency Deterrence

© 2026 · Swagatam Innovations