Close
0%
0%

SQ11 - Massive battery upgrade

A very basic "action camera" gets a more capable battery

Public Chat
Similar projects worth following
The SQ11 is a spiritual rip-off from the Polaroid Cube, in that it's worse in every way but price : it can be purchased in the usual back alleys of the internet for 8$.
One of the many downsides of the Chinese design (apart from the non-standard USB socket GRRRR) is a tiny battery, allegedly 200mAh, which results to a record time of 1 to 2 hours according to the manufacturer (in a space-time defying Hawkins wildest theories, in our reality, it's 20 minutes).
I decided to replace it with a salvaged 18650, supported by an added protection PCB and housed in a 3D printed case.
Now I have it recording for up to 17 hours.

The SQ11 can be disassembled by taking off the multicolour strip, then removing the tiny Philips screw.

I de-soldered the Li-po battery, soldered positive and negative leads to a (totally overkill) 18650 protection circuit.

I then verified that this quick hack still recorded video and charged the battery (very slowly, as the SQ11 motherboard is tailored for the 200mAh battery). As the 18650 is fully removable, I can fast-charge it in another contraption if I want.

Finally I got through 15 iterations for the 3D printed case, discovering the hull command in OpenSCAD and taking full advantage of it.

Unfortunately I discovered that there are multiple version of the SQ11 with different camera mount and heat spreader, so if you buy one, I can't guarantee that my case will fit unmodified.

SQ11-15-B.stl

Bottom

Standard Tesselated Geometry - 816.50 kB - 04/14/2018 at 12:11

Download

Standard Tesselated Geometry - 688.27 kB - 04/14/2018 at 12:11

Download

SQ11-15.scad

OpenSCAD project (15th iteration)

scad - 6.88 kB - 04/14/2018 at 12:11

Download

  • New autonomy tested

    pixelk04/26/2018 at 10:02 0 comments

    I finally measured the resulting autonomy :

    The camera recorded for 17 hours in one go with a charged 18650 battery.

    The limiting factor is now the µSD capacity, and the fact that the camera only supports SD and SDHC, thus limiting the capacity to 32GB. 32GB is enough to record 10 hours of 720p footage.

View project log

Enjoy this project?

Share

Discussions

pixelk wrote 04/26/2018 at 08:17 point

Just "retested" a long recording : As already stated, the limit is now the µSD not the battery. On the maximum µSD size (32GB) supported (SDXC are not supported) you can record aproximately 10 hours of footage in 720p. This will vary slightly depending on the compressibility of the scenes you shoot. The camera recorded for 17 hours before the battery went too low and it decided to stop.

  Are you sure? yes | no

pixelk wrote 04/25/2018 at 09:13 point

0) I must be honest, I got bored after letting it run more than 8 hours straight :) I'll do another test with the biggest MicroSD I have around (the microSD gets full before the battery is empty).

1) I'm pretty sure i's doable, but you will have to redo the case, and that took me way more time than main brain-dead simple electronic (which is just replacing the existing battery by a protection circuit + a cell).

2) Again I see no reason why it wouldn't be possible. But finding a solar panel + charging circuit that is good enough to keep the camera rolling is another task entirely.

  Are you sure? yes | no

Dillon wrote 04/19/2018 at 14:03 point

Very cool. How long is the battery life now?

  Are you sure? yes | no

miguipda wrote 04/19/2018 at 10:15 point

Could it be possible to :

1) do the same with the SQ12 (I presume so)

2) be able to get an autonomous solar charging adapted on this 18650 box to get the camera always working (hidden in a birdhouse) ? I means be able to connect an external solar power bank which will keep this internal 18650 also in charge ?


Sincerely thanks.

  Are you sure? yes | no

Similar Projects

Does this project spark your interest?

Become a member to follow this project and never miss any updates