18650 battery grip for Lumix GX80/GX85
Capacity should be around 7000mAh (depending on batteries - over 1800 of normal shots no timelapse tested for timelapse its few tenths of thousands).
You can not change SD card while it is mounted, because cable from DMW-DCC11 is blocking battery lid.
THINGS YOU NEED
4x NCR18650B li-ion battery
1x 1/4" x 16mm bolt (hex head 11mm) -16mm= thread lenght, 20mm= whole lenght
1x 1/4" hex nut 11mm head and 5,5mm height
8x M3 insert nut (5x6mm)
7x M3x12mm bolt
2x switch (MSS22D18 )
1x JST 2P Connector
1x 2s capacity indicator
1x 2s 18650 battery protection board
3x pairs 18650 battery contacts
1x DMW-DCC11 (BLG10E fake battery)
1x micro USB MT3608 DC-DC Adjustable Boost Module 2A (adjusted to 8.4V) -!!!!READ IMPORTANT INFO!!!!!
some wires, epoxy glue and hot glue
some(not all) battery contacts must be trimmed because there is not enough space, no big deal just corners and you may need to trim spring for battery that is lying under camera
!!!!!!! IMPORTANT !!!!!!!
!!!! bolt assembly !!!!
put together "bolt_gear_top" and "bolt_gear_bottom" with 1/4 x 16mm bolt (glue it)
!!!! thumb gear install !!!!
firstly put "thumb_gear" into place (in "main") then insert "thumb_gear_shaft" into it - if you insert "thumb_gear_shaft" into "thumb_gear" outside "main" body you will not be able to put it in place !!!
!!!!!!!!! MT3608 IMPORTANT !!!!!!!!
The workaround for the unaltered circuit is to turn the potentiometer adjustment screw 20 turns counterclockwise BEFORE connecting power! Apply only 3 volts power initially (such as a pair of "AA" batteries" while adjusting everything, even if your final input is going to be much higher (like a car battery).
By default as assembled and shipped, the potentiometer wiper is about 3/4 of the way to the top. If your power supply is 13.8 volts, This will apply about 9 volts to pin 3, Vfb, of the chip, and instantly kill it before you can get started.
the center wiper pin of the potentiometer on the back of the board, and check the voltage. When the unit goes into a control loop regulation mode, this voltage will be right at 0.6 volts. If it is above 0.6 volts, it is just passing input through to output without any boost.
Carefully adjust the potentiometer to bring the voltage at the output up to whatever you intend to boost to.
then can you safely connect the input to whatever higher voltage power source, such as car battery, you are going to boost from.