If you're looking for a replacement battery AND replacement atomizers....then you are ready to chuck it and get a real kit. A 510 atomizer/cartomizer will fit the Smoke51 Trio
batteries; and Joye 510
batteries will fit the Smoke51 Trio atomizers.....but if you're going to replace both, then get a Joye 510 kit and be done with the Trio. The Joye 510 is a much, much better e-cig....and about 1/4th the price. The problem with replacing the battery with a 510 is that you need the charger, too. The TRIO charger will NOT work for the 510 battery (opposite polarization.) Anyway, do yourself a favor and get a whole different kit instead of trying to replace the individual pieces of the TRIO. Even if you find another battery (and charger) the TRIO atomizers are CRAP. They only hold about 5 drops of liquid, max. Almost anything will be better....
Jan
EDIT: Short answer: it's a 510, not 4081 and not 808