What Size Battery Charger Do I Need

Estimator | Sizing a 12 Volt Battery to a Load

Do you take a 12v device you lot demand to ability, merely don't know what 12-volt battery you demand? This figurer is designed to help y'all observe a deep cycle battery when a continuous 12-volt load is practical.

If you know how much power your application takes to run, and the fourth dimension you would like to run information technology, we'll recommend a 12-volt battery. This computer is designed to provide a properly sized AH (Amp Hours) rated battery without excessively discharging the battery.

Go on in heed if you are using an power inverter you will get-go need to catechumen the AC Amps to a DC Amps earlier using this calculator.

Choose Your Battery

Walkthrough

Example	The first Field to enter information into is labeled "Load Size". This is typically found on the device you lot are running; for light bulbs information technology will be in watts and you lot need divide by the voltage yous are running in-typically 12 volts. Other DC devices should exist rated in amperage.(Note* if you are running AC devices, you lot will need to effigy out the DC amperage using our Ac to DC calculator). For our instance nosotros are running a 12 volt 15 amp swamp cooler.
Case	The second field is labeled "Load Duration", which is completely up to the user. If you want your load to run for five hours, put five as in our example shown here.
Example	The third field, "Temperature Adjustment", is for adjusting the calculations for extreme temperatures. For our instance, it is above 85 deg. F, so check the box. (Note* if yous are using Gel batteries in temperatures below 0 deg F, and above -60 Deg F, there is no need to bank check the box.)*
Instance	The fourth field is to adjust for the historic period of the battery being considered. Since the greatest usage of the reckoner is to figure out what bombardment to buy, usually the box will exist left unchecked, as in our example, simply it is there in instance the batteries available are older.
Example	The next 3 fields are for selecting what battery type you are going to use. Cull from Gel, AGM, and Flooded. For our example we select the AGM Battery.
Example	The terminal Field is where the calculator waves its magic wand and tells you lot what yous need. This number is rounded to the nearest whole number, and will tell you what battery Amp 60 minutes rating to look for in the selected battery type.
For our case, our 15 amp swamp cooler volition run safely for 5 hours with a 180AH, rated at 20Hours, AGM bombardment. For a little more detail on the math cheque out our Math Behind the Magic article.

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Written on November 9, 2021 a 10:01 am

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