NMH4000 : 6.0V NiMH battery, replaces MH-77/17, NP-55, NP-77 (Panasonic, SONY, JVC) etc. PRO9150 All capacity models are basically

All capacity models are basically the same size

and can also slow-charge the attached rechargeable battery (PB-42L

Case is approximately  2 1/4" tall

4HRAAUW : 4

Charges the attached battery while the radio is turned  OFF

NMH4000 : 6.0V NiMH battery, replaces MH-77/17, NP-55, NP-77 (Panasonic, SONY, JVC) etc. PRO9150 All capacity models are basicallyNMH4000: 6. 0 volt 4000mAh rechargeable NiMH battery for camcorders. Fits, Panasonic, JVC, Sony models. Dimensions: 3 1 2" long, 1 7 8" wide, 1 1 2" thick. Provides exceptional operating time. Re charges with stock OEM chargers. Pricing is for 1 battery. Picture shows two aspects of the battery. Battery cross reference list: Panasonic PV 10, Panasonic PV A207, Panasonic PV L352, Panasonic PV L353, Panasonic PV L354, Panasonic PV S62. Replaces JVC BN