Last time I rented one it was fecked...waste of £50

I ended up buying a cheap generic Chinese set in a suitcase from Amazon for £90 ( this one No longer stocked but there are ones that look the same being sold under different branding). And to be fair it’s been great, I don’t have a clutched SDS drill (got nicked, never replaced it) so I use my Makita cordless drill/driver with the torque limit turned on. I even used it with a 127mm core which is way too heavy for the drill but it still coped and managed two course brick/breeze block on one 3Ah battery.

Takes a while...WILL MAKE A MESS. No matter how hard you try, but you do end up with a prefect hole.

Used it in spain last year to put some 5” extractor fans in...They don’t like terracotta bricks, took a enternity but still did the job with zero damage to the rendering and wall tiles...apart from red dust everywhere! No sure how they’d cope with old victorian clay-bricks or solid concrete, but used the 5” core six times now and it still has bite to it...not bad as I was only expecting to last a couple of times!

I guess it depends on the cordless and the brick type.

But certainly my BHP452 did it using a single 4Ah battery pack. Not exactly ideal, but it’s the diamond that does all the work, so all the drill needs to do is have enough torque to spin it (don’t need to apply hard pressure, nor hammer).