Deep-Cycle Battery Calculator2018-01-10T11:39:50+00:00

Deep-Cycle Battery Calculator

Calculate your estimated daily Ah power requirement using the guide below.

Please Note: This is intended as a guide only. Data is subject to change without notice. R&J Batteries Pty Ltd exercise great care in the compilation of the data but bear no liability for any error or omission. Please confirm your Ah power requirements by calling your closest R&J Batteries Pty Ltd store or distributor – Call 1300 769 282.

Calculating Battery Size for Deep-Cycle Power Supply – R&J Batteries

  1. Calculate the estimated daily power requirement in Ah using the guide below (fill in your own power requirement details), or the actual power requirements of your accessories if known.
  2. Multiply the daily power requirement in Ah x number of days between re-charges (usually 1 to 3 days) for total power capacity requirement.
  3. Choose a battery/batteries with double the actual Ah requirement for improved battery life and reliability. (Eg:- 20Ah daily x 3days = 60Ah – choose a 120Ah battery)
  4. If using an inverter add 10% to 20% to Ah usage to allow for inverter efficiency rate (usually between 80% – 90% efficiency for Pure Sine-Wave inverter).
  5. Ensure sufficient re-charging capacity (wind, solar, battery charger, etc.) to fully charge the battery to 100% between cycles.
  6. Failure to fully recharge battery between cycles (before re-using) will shorten battery life.
  7. Deeper discharges between cycles will shorten battery life.
Application / Device Watts Daily Usage Ah Total Wh/day Total Ah/day
  Hours Mins  
- - -
- - -
- - -
- - -
- - -
- - -
- - -
- - -
- - -
- - -
- - -
- - -
- - -
- - -
Total Daily Use A/h -
Add margin for inverter efficiency ~10% -
Total -

Instructions

Watts

If watts are known enter watts and Amps are automatically calculated.

Amps

If watts are not known for 12v devices they can be manually calculated by multiplying amps by 12

Usage

Enter expected hours and mins per day

Watt Hours per day is automatically calculated.

Amp Hours per day is automatically calculated.

Batteries Available

Enter different battery configurations

Days of Average Usage

The number of days you can expect from a full charge. No solar input or Alternator input is included here.

Batteries

Enter different battery configurations

Days of Average Use

Enter the daily usage of the batteries

-
-
-

Call Us Now

Call:1300 769 282

To reach your closest R&J Batteries store.
error: Alert: Content is protected !!