Button Cell Battery Battery Size 389/390 Battery Chemistry Silver Oxide Voltage - Batteries 1.5V DC Standard Battery Pack Size 1 Capacity - Batteries 90 mAh Battery Cross-Reference 280-15 389 390 AG10 D389 D390 LR1130 LR1130H LR1130W LR54 M SB-BU SP389 SP390 SR1130 SR1130PW SR1130SW SR1130W SR54 V389 Drain Type - Battery Low Drain Diameter 0.451 in Depth 0.114 in Max Operating Temp 140 Degrees F Min Operating Temp -40 Degrees F Standards ANSI/IEC