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Primary Zinc Alkaline (most common) Lithium (camera, watch) Secondary (rechargeable) Sealed lead acid (car) Gel NiCd NmHd Lithium. Important specs Energy density Voltage Zinc/Alkaline: 1.5 V Lead Acid: 2.0 V cars: 6, 12 V NiCd: 1.2 V Power tools: 4.8, 6.0, 7.2, 9.6, 12, 18 V
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Primary Zinc Alkaline (most common) Lithium (camera, watch) Secondary (rechargeable) Sealed lead acid (car) Gel NiCd NmHd Lithium Important specs Energy density Voltage Zinc/Alkaline: 1.5 V Lead Acid: 2.0 V cars: 6, 12 V NiCd: 1.2 V Power tools: 4.8, 6.0, 7.2, 9.6, 12, 18 V Maximum current “Cold-cranking amps” Capacity Amp-hours or mAHrs BATTERIES
12 V (10 cell) NiCd pack rated at 1300 mAH 1.3 Amps for 1 hour 520 mA for 2.5 hours…..in theory Top-notch cells for RC racing can provide 2300 mAH 9V alkaline 580 mAH @ 12 mA (can deliver 12 mA for 48 hrs) Capacity and discharge 100 Service life Hrs 1 10 100 mA Alkaline technology 9V Discharge curve t See www.duracell.com (or other sites) for more