There are three types of batteries, NIMH, NICD, and LIPO. These are at least the ones I know of. I race NIMH packs and they are also the most common for racing. Good NIMH cells are generally around $50-70. To charge your NIMH cells you need a charger (duh!). A good charger would be a Team Orion Advantage charger ($120). It can charge all the types of batteries I've listed, even LIPOs. For discharging, a Novak Smart Tray or Flatline is what you want. Just go on towerhobbies.com to find out more about novak and team orion products. I say you would have to spend money on 3 NIMH matched packs (about $150), a charger (about $100) and a discharger ($80 for Novak Smart Tray). Hope this helps you.