So you may reach a voltage where the LEDs no longer work long before the 36 minutes are up. Which may or may not work.Īdditionally, a battery voltage tends to drop quite a bit as it is discharged Now, a lithium 9V battery may have a rating of 1200 mAh (from )ġ200 mAh is 1.2Ah, at 2A draw that is at best 0.6 hours or 36 minutes.Īssuming of course you can run the LEDs rated for 12V off a 9V battery. for an explanation of the battery amp-hour rating. So a 12V lead-acid battery like this one would last roughly 2.5 hours at 2A draw (5Ah rating / 2A draw) r/DIY now has a Discord channel! Come chat with us!ĭid you miss the AMA with Patrick DiJusto? Click here to read it!Īll content must be DIY - if you paid for the work or found it posted online it is not DIY.Īt 4.8 W/m, for 5 meters, that's 24 watts.Īt rated voltage of 12V, 24W means 2 Amps. ![]()
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