Ensure life-saving readiness with this NKPB-28271K replacement battery, the critical power source for NIHON KOHDEN AED-2100K, AED-2150, AED-2151, and AED-2152 series automated external defibrillators. Engineered with reliable LiMnO2 (Lithium Manganese Dioxide) chemistry and delivering 27V at 2800mAh, this 100% brand new medical-grade battery is manufactured to meet the exact specifications required for emergency cardiac care equipment. It comes with a full 1-year warranty for complete confidence.