I am buying a rgb led strip with the following technical details:
Voltage: 12 volts Wattage: 60 watts
I want to connect this strip to a battery and don't know what will be the right one. I need the battery to last for 2 hours.
I been doing research and this are my assumptions based on what I have researched. Please let me know if I am wrong.
I know that
volts * amp-hour = watt-hourIf I plot the technical details into the formula then I know that I will be needing 5 amps per hour.
I now need a battery of 12 volts that can output 5 amps per hour. When looking into the internet I see a lot the term
Ahwhich means amps per hour. Based on this needs I found this battery: Elk ELK-1280 12V 8Ah Sealed Lead Acid Battery.
I read that if a battery has a capacity of 2Ah then if you discharge it at 2 amps per hour it will drain in one hour. If you discharge that same battery at 1 amps per hour (half of that) then it will last twice. If you discharge it at 4 amps per hour then it will last 30 minutes.
- I assume that 8Ah means that if the battery where to use 8 amps in an hour it will drain in that hour. But because I will be using 5 instead of 8 then I know that I will be able to have the battery last longer about 1.4 hours.
All the batteries with this capacity that I am looking for are often big and heavy. Then I came across Hiyadeal Portable 12V 9800mAh Li-ion Rechargeable Battery Pack. That battery is only 1 pound! That battery claims to deliver 9800mAh or 9.8 Amps per hour. That means that if I where to use this battery because I only need 5 amps then it will last for about 2 hours?