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Step 5Build it: The Enclosure
Next up is the enclosure. We found the Dorcy 41-1088 lantern at Sears for about $40. Its very close to the right size so we went with it. (image 5a & 5b)
It looks like this. (image 5c & 5d)
Open up the bottom to reveal a 6V, 4A sealed lead acid battery. This battery works pretty well. There's enough internal resistance that when the LEDs are on, the voltage out drops to 4V which is rather convenient (image 5e)
It comes with a charger but putting it on a 7V benchtop supply will charge it much faster (about 4 hours instead of 20). (image 5f)
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