If you can find one that accepts AA or AAA batteries there's any easy hack for more power as long as it isn't super sophisticated electronics. What you are looking to replace the chincy alkaline batteries with are lithium ion rechargeables. 10440 is the coding for the exact form factor of a AAA, and 15440 should be AA (Where XXYYZZ, x=diameter (mm), y=length (mm), and z is superfluous in most cases. I.E. that 18650 in your gay vape is 18mm in diameter and 65mm long.
Now the reason you can't just go and swap these in all electronics is that AA/AAA alkaline batteries sit at around 1.3v while their lithium counterpart have more than 2.5x the voltage at a nominal 3.7v. Since these devices have a static amperage draw the overall power is going to pretty much scale linearly with voltage. Way more chooch for your choch. A big cheap rheostat or a simple on/off switch will tolerate that alot better than one with a board, chip, bluetooth, and RGB LEDs. If it gets scalding hot or starts smoking you're going to want to get it outside and preferably over concrete ASAP. You only get a few seconds interval between puff of smoke and a jet of fire when they get to thermal runaway.