Introduction: DIY NP F550 Battery From 18650 Cells in 2S2P Connection

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Recently I bought great Viltrox L132T LED Video Light for my studio and when the delivery came I realized that I forgot to order battery for this kit. The model I need for my case is from Sony NP-F550/770/960 line.

Sony NP-F batteries are used for almost everything. You can find them on cameras, photo kits, studio lights and monitors.

Can we make DIY versions of Sony NP F types batteries?

The answer is YES.

We need to thanks to chickey for the great 3d printer model of NP-F battery case shared on Thingiverse. I remixed chickey's model by expanding the internal space. This way will be easier to fit all components inside. You can download the edited battery case and cover version HERE.

To replicate the same voltage as the genuine batteries we need to assemble 4 x 18650's in 2 serial and 2 parallel connection 2S2P.

Step 1: Components and Tools

Components

1. 4 x 18650 new or recycled cells

2. 3d Printed battery case with lid

3. BMS HW-391 - 8.4V 20A

4. Nickel Strips

5. 5 wires 10cm-15cm each

Tools

1. Soldering Iron with Solder Wire

2. Hot Melt Gun Tool

3. Claws or Pliers

4. Spot Welding Machine – OPTIONAL

5. Access to 3D Printer or printing on demand at www.recyclestein.com

Step 2: How to Connect All Cells in 2S2P

All details for this project on recyclestein.com

Step 3: Video Steps