Avoid breathing in vapors—make sure there's plenty of fresh air

You can see which battery pack Traxxas recommends for your vehicle here:

Konverteringsstik fra Tamiya Hun til Receiverpakke

4V LiPo 2S Size: 36 x 28 x 16 mm Weight: 38g Manual: ENGLISH ONLY

Specially made just for polycarbonate

Batteri AAA (4 stk.) Hammer Avoid breathing in vapors—make sureGP Super Alkaline 4 pcs. AAA alkaline batteries with high performance, perfect for your radio transmitter! These batteries strike a great balance between high output and performance. You'll get the best performance in your RC control by using alkaline batteries instead of rechargeables. Alkaline batteries offer higher output (1. 5V vs. 1. 2V) and maintain power longer.