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Rectangular lithium-ion camera battery, dark grey finish, 56.40 by 31.70 by 5.85 mm

Cameron Sino BP-780S 700mAh camera battery

SKU CH-YWYT-95VH8

Replacement lithium-ion camera battery, 700 mAh, 3.7 V, fits CONTAX SL300RT and Finecam SL300R/SL400R models

  • Total capacity700 mAh
  • Pack contents56.4 × 31.7 × 5.85
  • Compatible withBattery
  • Key featuresBattery
  • Replacement battery for CONTAX SL300RT, Finecam SL300R and SL400R models
  • 700 mAh lithium-ion capacity powers compatible cameras reliably
  • 7 V output with fully decoded chip works like the original battery
  • Compact 56.40 x 31.70 x 5.85 mm design fits the battery compartment precisely
  • Built-in overcharge, over-discharge, over-voltage and short-circuit protection for safe operation

Replacement Battery for Contax and Finecam Cameras

This Cameron Sino BP-780S unit replaces the original battery in Contax SL300RT, Finecam SL300R and Finecam SL400R cameras. It is a new lithium-ion cell rated at 700mAh and 3.7V. The pack measures 56.40 x 31.70 x 5.85mm and weighs 16g. A fully decoded chip ensures communication with the camera works as expected.

Capacity and Voltage Match the Original

The single specification that decides fit is the 700mAh capacity at 3.7V combined with the BP-780S part number. These values must match the original battery exactly for the camera to report charge level correctly and operate safely. The physical dimensions of 56.40 x 31.70 x 5.85mm confirm the pack seats properly in the battery compartment.

Low Heat Output During Typical Shooting

In normal use the cell runs cool because the camera draws modest current from the 700mAh pack. No audible noise is produced by the battery itself. The integrated protection circuit guards against overcharge, over-discharge, over-voltage and short circuits, keeping power draw stable and preventing excess temperature rise during extended sessions.

How it compares

Measured against everything we stock in Camera Batteries, Grips & Chargers, at today’s prices. Recalculated every night.

Price $11.99
Cheaper than about 75% of the 5,900 comparable items (median $17.99).

Specifications

Product
Brand nameCameron Sino
Model nameCONTAX SL300RT, Finecam SL300R, Finecam SL400R
Part numberBP-780S
Total capacity700 mAh
Compatibility
Compatible withBattery
In the box
Pack contents56.4 × 31.7 × 5.85

Questions about this item

How long will the 700 mAh capacity last in my camera?

Runtime depends on the camera model and shooting habits; the 700 mAh rating matches the original battery specification for the listed Contax and Finecam models.

What voltage does the BP-780S deliver and does it match the original?

It supplies 3.7 V, the same voltage as the factory battery for the SL300RT, SL300R and SL400R cameras.

Will the 56.40 × 31.70 × 5.85 mm dimensions fit my camera's battery compartment?

Yes, those are the exact dimensions of the original BP-780S cell, so it slides into the same slot without modification.

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