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The D-Li78 Lithium-Ion Battery Pack from Pearstone is designed to replace the Pentax D-Li78 battery. Small and lightweight, Lithium-Ion batteries can be charged or discharged at any time without developing memory effects.
| Chemistry | Lithium-Ion |
| Output Voltage | 3.7V |
| Capacity | 680mAh |
| Dimensions | 1.6 x 1.1 x 0.2" (41 x 28 x 5mm) |
| Weight | 2 oz (57g) |
Reviewed by 2 customers
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Comments about Pearstone D-Li78 Lithium-Ion Battery Pack (3.7V, 680mAh):
I have not yet tested this battery to see if it takes as many photos between charges as the Pentax brand. Due to huge difference in price, I could have two of these for backup and money left over for the cost of one Pentax battery. So I'm not concerned re whether it'll take as many photos as a Pentax.
Comments about Pearstone D-Li78 Lithium-Ion Battery Pack (3.7V, 680mAh):
The Pentax Battery has a reputation for short run time. I bought an extra battery to help with this problem. However this battery has a very-short-run time. I get about 100 shots and it's dead. If you want a 2nd battery for your Pentax W80 get the Pentax brand
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