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Old 11-22-2015, 09:45 PM   #12 (permalink)
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Quick update

Went to Ace and spent $20. Picked up a couple of lampholders and incandescent bulbs.

There are no incandescent bulbs in my house except two places: the fridge and the oven. And when the bulb in the fridge dies, it'll get an LED.

I got 130v rough service bulbs to provide a bit of overhead. I hate when bulbs blow. Wired them in series as recommended.

Checked starting voltage: 154.8v

Hooked it up, fired it up. Very gratifying: they lit right up.

I saw a couple of VERY involved setups that incorporated built-in meters and automatic shutoff. I suppose if I concentrated very hard I could figure out how to do that, but what the heck, it's Sunday.

So I set a timer for 10 minutes and fired up Halo. Every ten minutes I hit PAUSE and check the voltage.

Finally, at 70 minutes I got down to 143.8v DC on the terminals.

I am pausing here while I try to figure things out. I have seen mention of minimum cell voltage of .78v, beyond which you risk reversing the polarity of cells. In my pack would mean a total voltage of 93.6 - not having disassembled the pack, I have no way of knowing whether any cell has gone below this threshold, of course, so I'm giving myself plenty of wiggle room before I do something irretrievable.

UPDATE AGAIN: it's another hour since I wrote the above and the voltage climbed back to 145. I put the discharger on it for another 10 minutes and pulled it back to 143.5. I'll see what it's relaxed back to in the morning.

Lead or follow. Either is fine.
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