I have a tea light lantern and a pressure petrol lantern, and would like something in between, running off battery (cool, no flames).

Good type of kit imo.This
Similar to @HillBill ’s
It’s not tactical, Not militaristic, and it’s made of bright green plastic. It is quietly domestic.
It lit my tipi for the whole Summer Moot without recharge. (I sleep at 2am.)
It lit the whole of the Makers Moot and the weekend afterwards without recharge. It served as tent light and torch for nocturnal expeditions.
I cannot recommend it highly enough.
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I cant decide if they are weird or genius. Maybe a little of both? Rechargeable lightbulbs that fit into existing sockets... to try and emulate the original lighting prior to a power cut... I kinda like the idea. I hope they have various fitting options though. As none of my main lights have the larger screw fitting. MehJust remembered that these arrived a couple weeks ago. Bought for home emergency lighting. I’d hate to screw them into a live socket but there’s it’s no warning not to!!
I mentioned them here
The screw can be used with a plastic sleeve and hook for hanging.
The remote works well.
The three shades of white are distinctive.
Brightness is infinitely variable within its range.
But
While I’d recommend using the remote, they can be bloody irritating as they have a touch sensitive area on the side. Tapping this cycles It through its colours while a long hold switches it on and, once on, changes its intensity.
Why irritating?
Because you pick it up and drop it into its storage and it switches itself on if you grab it by it’s sensitive area!!!
It’s manageable.
It’s got mixed reviews about battery life but I gave up waiting for it to run out after nearly 40 continuous hours.

wurkkos.com
I've used one of these for years, it's been fantastic.
Same here.Yes, same here. I've had mine for approx 8 years and it's a fantastic bit of kit. Decent battery life, robust, compact and plenty bright enough to illuminate camp. Over the last 7-8 years I have camped a minimum of once per month, every month and this little lantern has been on every single trip. In between trips it's hung up in the shed and used as my main light source when pottering about of an evening.
If it broke, I'd buy another without hesitation. Indeed many of my camping buddies use the same lantern.