I guess my Shoji style lantern is completed. Though I do have some felt pads I need to affix to the bottoms of the 4 corner posts. I did shorten the screen panel retaining nails enough so they protrude just enough to be able to push the nasil pins up a sufficient amount to enable removal.
I plan to re-do some photos as I see dust and dirt here and there. I was rather excited to get it all together and have it work and neglected to clean and polish before shooting and posting images.
I’m running an operating temperature test this AM. I ran the light on Hi (1.4 amps to the Nichia 219C emitter. The copper pill the l=mcpcb is fixed to settled in at 102F (39 C) with the external copper plates at 85 F (29 C) in a room with an ambient temperature of 70 F (21 C). I also had the charger plugged with the light turned on; the copper fin attached to the charger never warmed to more than a degree or two above room ambient. I removed the bottom cover after the 60-minute test run and the battery was the same temperature as the wood lantern bottom, just a degree above room temperature.
Not me. I often “recognize” well-known members by their avatar, rather than by name. So, when reading a thread, I see the avatar at each post to know who’s talking. I saw your new avatar and thought “hmm… somebody’s already made their avatar look like MtnDon’s lantern”. Then I saw your name there and thought “Aha! Of course!” :sunglasses: :+1:
In other words, in my mind, your lantern already represents you better than the name does. So, it deserves to be your avatar.
I ran the lantern on the 50% which is theoretically 700 mA.
After slightly more than 4 hours the light output seemed somewhat dimmer. At 4 hours 15 minutes, the light had dimmed more and the driver went into its blinking, low voltage mode. The voltmeter read 2.91 volts.
It appears the battery is pretty much the advertised 3000 mAh capacity. That makes me happy.
During the recharge the copper strip heatsink was barely warm to the touch. I guess I could have used a 2 amp charger, but didn’t have one on hand and was not sure one would arrive from CN in time. The PO tracking shows a package should arrive next week, so it could be here in time to swap, but I don’t think I’ll do that. The 2 amp is slightly larger and the connection points are in different locations. I’ll save the 2 amp for a second one I may build.
Can you link the 2 amp charger you ordered. 1 amp are easy to find but can’t find a decent 2 amp. I’m in the process of building a lantern myself, but nothing compared to your skills.
Yes, it could be paralleled with the 1 amp charger board. Finding a place to mount the second board would be the challenge. A 2 amp would need a heat sink for certain. I have used one before. I thought I had a spare but could not find it. That’s why I ran into a time crunch to order a 2 amp. I could maybe mount it externally under the bottom cover piece. ??
Total misinterpretation of the statement / question about “could I link”…… I’ll look that up and get back here and post it. Thanks for making that clear to me. Getting old or something….