Vello BG-S3 User manual

BG-S3
BAT TERY GRIP
Designed for the
Sony Alpha A7 II, A7R II, and A7S II
Mirrorless Cameras
USER’S MANUAL

Introduction
The Vello BG-S3 accepts two Sony NP-FW50
rechargeable batteries to effectively double the runtime
of your Sony Alpha A7II, A7R II, and A7S II mirrorless
cameras, making it easier to shoot for longer durations
without replacing your camera’s batteries.
The BG-S3 attaches securely to your camera’s 1/4 " -20
tripod socket, and the nonslip rubber on the grip offers
enhanced handling when shooting in vertical position.
Alternate shutter-release, AF/MF/AEL, and three custom
buttons, plus front and rear command dials, make it
comfortable to shoot in portrait orientation, so you won’t
have to twist your arm to get the right shot.
Please read through this entire manual before
using the BG-S3 battery grip.
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Precautions
1. The BG-S3 should be used only with the compatible
devices specified in this manual.
2. When the battery tray is removed from the grip, remove
the batteries or place the tray in a container to prevent
electrical shorts caused by contact with other metal
objects.
3. If you notice smoke, an unusual smell or noise from the
battery pack, discontinue use immediately. Remove
the batteries and contact the Vello Customer Service
Department.
4. Keep this product away from water and any flammable
gases or liquids.
5. Set the grip’s on/off switch to Off position to disable its
controls when not shooting vertically.
6. The battery level may not display properly if batteries
are inserted before mounting the grip.
7. Remove batteries from the grip when not in use.
8. Do not attempt to disassemble or repair this product.
9. Install batteries in the proper orientation. Installing
batteries in the reverse orientation can cause them to
leak, overheat, or explode.
10. Avoid water or extreme humidity and keep in a dry and
cool place.
11. Keep out of reach of children.
12 . Make sure that this product is intact and that there are
no missing parts.
13. To avoid damage to this product, be careful not to
overtighten or improperly thread any of the threaded
fittings.
14 . All photos are for illustrative purposes only.
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OVERVIEW INTRODUCTION
ASSEMBLY

Overview
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1Electrical Contacts
Communicates with the camera
electronics.
2Custom Button (C2)*
3Custom Button (C1)*
4Hand Strap Mount
5Shutter-release Button*
6Front Command Dial*
7Tripod Socket
8Battery Tray Compartment
Houses the battery tray.
9Battery Tray Latch
10 Battery Tray
Holds up to two Sony NP-FW50
batteries.
11 Attachment Wheel
Secures the grip to the camera.
12 Grip On/O Switch
Activates or disables the BG-S3’s
controls. Your camera will continue
to draw power from the BG-S3 when
the switch is in the Off position. The
on/off switch is not a power switch.
13 AF/MF/AEL Button*
14 Rear Command Dial*
15 Custom Button (C3)*
16 Camera Battery Chamber Cover
Compartment
17 Guide Pin
Helps align the camera to the grip.
18 Mounting Screw
Attaches the grip through the
camera’s tripod socket.
*Performs the same function as on the
camera.
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ASSEMBLY OVERVIEW INTRODUCTION

Attaching the Grip
1. Ensure that the power is
turned off on the camera
and that the on/off switch
is set to Off on the battery
grip.
2. Remove the battery from
your camera’s battery
chamber.
3. Remove your camera’s
battery chamber door by
pulling the release latch on
the inside of the door as
indicated above.
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4. To prevent loss, place the battery chamber door
into the BG-S3 battery door compartment.
Align the door with the BG-S3’s battery door
compartment, and then insert the door. Press
the door’s release button to lock the door in
place.
5. Swing the door shut and slide the switch to the
LOCK position.
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OVERVIEW
ASSEMBLY INTRODUCTION

6. Connect the BG-S3 grip to
the camera, while aligning
the grip’s mounting screw
with the camera’s tripod
socket.
7. Rotate the attachment
wheel in the direction
shown by the arrow until it
is firmly tightened.
When removing the grip, turn the
camera power off and remove
the batteries.
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1. Ensure that the power is
turned off on the camera
and that the grip’s on/off
switch is set to Off.
2. Flip the battery tray
latch so you can rotate it
counterclockwise and pull
the battery tray out of the
grip.
3. In the battery tray are
compartments for batteries
1 and 2. Align battery 1 as
indicated by the diagram,
noting the springs inside
the compartment. Insert
battery 1 spring-side first,
and push down so it snaps
into place.
Inserting Batteries
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OVERVIEW
ASSEMBLY INTRODUCTION

4. Align battery 2 as indicated
by the diagram in the
compartment, and slide it
in until it snaps into place.
5. Make sure the battery
tray latch is rotated
counterclockwise and
slide the battery tray into
the grip. Rotate the latch
clockwise and reposition it
so it’s flush with the side of
the grip, then turn on the
camera and grip.
To remove battery 1, pull the
battery toward the springs and
lift the battery up and out of the
compartment.
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