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Replacement Battery for Panasonic CGA-DU21, Lithium-Ion, High Capacity 2200 mAh, 7.4V

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Replacement Battery for Panasonic CGA-DU21, 2200 mAh (SW-7945) SW-7945
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Sewell Part #:  SW-7945   Mfg Part #:  SD-DU21
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Replacement Battery for Panasonic CGA-DU21, Lithium-Ion, High Capacity 2200 mAh, 7.4V
$25.95
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Synergy makes replacement batteries like this one for the Panasonic CGA-DU21 that perform like the originals, but at a far lesser cost for you.

For extended sightseeing trips, a powerful battery (and likely a backup) is an absolute necessity. Synergy's batteries provide hours of use and can be recharged in the charger that came with your original battery.

For performance like the big names with a price like the good-old days, buy your Panasonic camcorder batteries from Synergy.