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Going through my stash for the first time in a long while, I found three of these things that I used back in the day. IIRC, they supposedly bring a used NiCd pack down to a safe level for recharging after use, or leaving it on for storage so the battery doesn't develop the dreaded 'memory'. I believe you could also fully peak a pack then plug in the Bug for a maintenance discharge cycle to condition the pack... or something. I don't recall specifics. Anyone have the instructions or know any intimate details about these things, what they did and how they did it?

I have two barely-used Onyx 1800 NiCd packs that will see very infrequent use. Any reason not to use these things on them for giggles and why-nots?

I'm tempted to chip all the plasti-dip off one and see what makes them tick.

I remember those. Mine were called Bulldogs but I'm sure they were the same. I have about a dozen, some red and some green. Give me a few minutes and I see if I can locate the instructions. Be right back...

Edit,

Here they are. I forgot I had blue ones as well.
I've told y'all, I never throw anything away.

Hmmm, it appears the company was located in Beaverton, OR. There's something about that name that makes me chuckle.

Fantastic! Thank you!

You're very welcome.

It's very clear these things were molding from epoxy using ice cube trays.
I have a couple that are cracked probably from the intense heat.

3645 Hall Blvd was Tammies Hobbies old location. I was hired as they were moving to their current location. They made a pretty famous line of chargers called “Lightning Bolt”. Being just up the road I bet they were part of Tammies.