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Ryobi. Although the tools are fairly cheap the batteries are a bit pricey and the one I had got nicked from my car boot.
A look on that Torque Test channel does suggest bigger is better. I'd also guess magic.
aggi-
Aah, Ryobi are in a period of flux.
Techtronic Industries, the owner of the Ryobi brand name,
along with Milwaukee, (and a couple of others that are manily for US Big Box stores),
have a dilemma.
Ryobi have an established user base for their One + range of tools,
which until recenly have been brushed electric motors and 18650 battery cells.
They are well priced and readily available, although no longer stocked at Homebase.Ryobi now have 'HP' tools with brushless motors,
(and a bit of a price hike),
and,
'HP' batteries based upon 21700 battery cells, (but not the best 21700 cells).Best news: Ryobi has maintained compatibility snce the days their tools were blue plastic,
(I have such an aged drill and driver, and an old hedge trimmer) and used NiCad batteries.The HP tools and batteries have two additional connection tabs that allows HP batteries to send the increased power to HP tools.
An HP battery will work in a non-HP tool, (and vice versa), but won't deliver increased power, just longer run time.
mespilus
Which make?
We're in the transition between 18650, 21700 and flat cells,
which have very different charging and discharging/power delivery rates.