The Pearstone NP-QM91 Lithium-Ion Battery (7.2V, 4200mAh) is a replacement for the Sony NP-FM90, NP-FM91, NP-QM90, and NP-QM91. 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 | 4200mAh |
| Output Voltage | 7.2V |
| Dimensions | 1.5 x 2.34 x 2.18" (38.2 x 59.5 x 55.6mm) |
| Weight | 7.9 oz (225g) |