One issue with a wart is you really have no idea how much charge you have put into the battery. Knowing the charge can tell you a lot about the battery, plane condition, etc. The warts also take to dang long for my tastes. I'd suggest looking at a charger that has a readout displaying the charge it has placed into the battery. If you get a high current charger and rapid charge cells, you can then also charge your packs at the field if you want as they will charge quickly.