The Pearstone CGA-DU21 Lithium-Ion Battery is a replacement for the Panasonic CGA-DU21 and Hitachi DZ-BP21. Small and lightweight, Lithium-ion batteries can be charged or discharged at any time without developing memory effect. Don't wait for your one and only battery to charge before you can record again, carry a spare and keep on shooting.
| Chemistry | Lithium-ion |
| Capacity | 2040mAh |
| Output Voltage | 7.2V |
| Dimensions | 1.7 x 1.5 x 1.7" (4.4 x 3.8 x 4.4 cm) |
| Weight | 3.6 oz (96 g) |