Reddit mentions of WAGO 222-413 Lever-Nuts 3 Conductor Compact Connectors

The biggest current issue with push-in connections is that they're only on the cheapest of devices. This means that homeowners will buy and attempt to install these devices incorrectly. Like 12AWG wire in a 14AWG push-in. Or not properly stripping and terminating the connection on a push in.

There are some great push-in connectors that are used on the market, like the Ideal In-Sure or the more common Wago connector.

The link you reference is for push-in connectors, not push-in connections on devices.

EDIT: I wanted to add, there are even better and faster connectors than the Wago/Ideal push-in connectors. The Wago Lever-nuts are amazing.

Also want to distinguish between push-in connections and push-in connectors (as far as the trade slang goes in my area, every area is different). Push-in connections will be on a device, like a receptacle or switch. Push-in connectors are those like that of Wago or Ideal. Separate from the device.

I apologize for being sloppy with my terminology during this discussion. I know I've interchanged connectors and connections where I shouldn't have.

Check out this site. There's a good photo illustration of the right way to safely connect stranded and non-stranded wires.
https://www.familyhandyman.com/electrical/wiring/how-to-make-safe-wire-nut-connections/view-all/

Or just buy some wago connectors: https://www.amazon.com/Wago-222-413-LEVER-NUTS-Conductor-Connectors/dp/B000JJPA66/

Not exactly cheap, but Wago lever-nuts work great for stranded and solid.

https://www.amazon.com/222-413-LEVER-NUTS-Conductor-Compact-Connectors/dp/B000JJPA66

https://www.amazon.com/Wago-222-413-LEVER-NUTS-Conductor-Connectors/dp/B000JJPA66

How about Wagos?

I'm using Cree CXB 2540's @ 3000K since i wanted better distribution and thought 3590's would be overkill (what people typically go with). Used a heatsink like this to mount each LED (with Ideal chip-lok holder, tapped two holes at 3mm and used some thermal paste) and then just wired them up to a driver using some wago connectors.

Hope that helps :)

I don't use them for the same reasons you've stated. I prefer using the regular wire nuts, I've seen these and they look similar but more secure and maybe smaller than a large wire nut.

Not very likely you are going to find a premade "Y" pigtail connector to parallel 2 sets.

Probably going to have to cut and splice the wires. These are Ni-Mh, so no worry about balancing and over discharging as would be the case with Li-Ion batteries.

Splices