The Watson DMW-BCN10 Lithium-Ion Battery Pack works with the same cameras as the Panasonic DMW-BCN10 and Leica BP-DC14. This replacement battery pack features a capacity of 850mAh, 3.7V of output power and 3.145 watt-hours. Small and lightweight, lithium-ion batteries can be charged or discharged at any time without developing a memory effect.
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Watson batteries have always worked well for me. So, adding an adapter plate to the order, so I'd have two available for charging two Leica batteries at the same time using the Watson Duo Charger, made sense. With multiple Leica, Nikon, Olympus, and Sony Handycam batteries to keep charged, these adapters are indispensable. The also work with my original pair of Pearstone Compact Chargers for single batteries. Plugging-in both the Watson and Pearstone chargers, four of my many batteries can be charged in any combination at the same time. That has come in handy at time.
I use it in Leica C and it works just fine.