... (Li-Ion), 1500 Milliamps, (SLIM). The PMNN4406 Radio Battery is also Rated (IP67)Fits Radio Models: APX4000, XPR 3300, XPR 3500, XPR ... 7350, XPR 7550Compatible with:APX 4000 Radio BatteriesXPR 3300 RADIO BATTERIESXPR 3500 RADIO BATTERIESXPR 7350 RADIO BATTERIESXPR 7550 RADIO BATTERIES