mazowNo, you can use any type. However, I got some of the Keeppower 5200 protected cells with the semi-button top and they are just a bit too long...anode cap got crushed in a tiny bit (still totally functional and no risk). Unprotected cells are a better fit but either works. Just be sure they can give 9-10 amps continuously if you'll be using turbo and/or in hot weather a lot.