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3V lithium coin cell battery backup – CR1220
Battery holder will accept CR1216, CR1220, or CR1225
Dimensions and weight
With Window 3.08” x 3.15” x 0.76” [78.17 x 80 x 19.30]mm
Without Window 2.21” x 3.15” x 0.69” [56.13 x 80 x 17.52]mm
Weight 2.7oz [77g]
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