Premium quality battery compatible with Radio Shack SPIRIT MU21CV two way radio. This Radio Shack SPIRIT MU21CV radio battery is compatible with the original equipment. Designed for reliable performance and high durability, it is guaranteed to maintain 80% of its rated capacity for 12 months from the date of shipment.This battery is compatible with3com: 1100L 900C Intermec/Norand/ Honeywell: RT1000 RT1100 RT1201 RT2210 RT3000, also compatible with Motorola/ Sprint: Radius AP10 AP50 CP10 CP50 HT10 HT10-Plus P10 P1050 P50 P60 P70 SP10 SP21 SP50 SP50-Plus SU210 SU22 SU220 SU22C SV10 SV11 SV11D SV12 SV21 SV22 MU11 MU12 MU21C MV11 MV12 MV22 Shinwa: SH401P SH501P SH502P ZG33 ZG33BReplacement P/N:53877 19-1207 19-1216 19-1217 19-361 23-151 317-078-002 BTX-126 BTX-128 BZ9044 ECM9056 GTS9027-C GTS9044-C GTSIN1100-C H9027-C H9044-C H9044-M HBM-RT1100N HNN9044 HNN90448A HNN9044B HNN9056 HNN9233A HNN9234 HS-263M-RT1100M LMR9044 P93YQS20G2AA P93YQT20G2AA RAY9027 RAY9044 RAY9044NM T19-1207BTY WC-060U-9044 WS-263-RT1100Battery features:*Uses the highest quality graded and sorted A' Grade cells.*Has resistance welded gold plated contacts for maximum performance.*Provides excellent discharge characteristics.*Uses high impact ABS and Polycarbonate plastic housings for ruggedness.*Undergone comprehensive testing including high altitude performance, vibration, mechanical shock, thermal cycling, external short circuit and overcharge test simulations.*Includes a 12 Months free replacement warranty for manufacturers defects.We provide premium quality batteries, manufactured by ISO 9001 certified plants using state-of-the-art technology for the finest quality radio batteries. Each radio battery is tested throughout the manufacturing process to match or outperform the original equipments specifications for form, fit and workmanship.