The Vapcells are tested and definitely are 1500mAh, but they won’t run torches on turbo for long because they can’t deliver the higher amps needed. For that I’d use a Vapcell H10. But, both the Wurkkos Ts10 and HD10 have a habit of burning out the LED on turbo.
What’s the brand of your RCR123? 1800mAh is overstated, they aren’t big enough to hold that and it’s more likely around 850-1000.
2 companies stand out for batteries. Fogstar and Ecolux. Both list honest capacities, batch test their batteries, and can advise on amp draw.
For instance.
18650 Battery Retailer l FREE uk shipping l Same day shipping if ordered before 3pm l Authenticated and batch-tested products from Molicel, Samsung and Sony.
www.fogstar.co.uk