Uploaded June 2019 | Updated September 2026, 2 weeks ago

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Hy There,

In this vido i will make a 3s (12V) battery pack out of 18650 LiIon battery cells.
I bought some cheap battery with a good 5 stars review, from banggood:
MECO 3.7v 4000mAh Protected Rechargeable 18650 Li-ion Battery
Later i figured out that that battery don't got 4000mAh of capacity as it's described, but got only 1800mAh.
Each battery cell got overcharged, overdischarged and overcurrent protection inside, but i remove them because of problems i had with.

.STL files for printing the frame (housing):
thingiverse.com/thing:3716424

there is my affiliate links to that batteries if you need it anyway.
On the end it's super cheap battery and it's got solid 1800mAh of capacity.

2PCS MECO 3.7v 4000mAh Protected Rechargeable 18650 Li-ion Battery:
banggood.com/custlink/vGGGtN3o95
4PCS MECO 3.7v 4000mAh Protected Rechargeable 18650 Li-ion Battery:
banggood.com/custlink/3GmGtbDaii
10PCS MECO 3.7v 4000mAh Protected Rechargeable 18650 Li-ion Battery
banggood.com/custlink/mGv35s3a9l
Seiko Protection IC 10A Protection Board For 3S 11.1V 12V 12.6V 18650 Lipo Battery :
banggood.com/custlink/v3mDPnvjSe
2M PVC Heat Shrink Tubing Shrink Tube 18650 Battery Shrink Sleeve Insulation Casing Heat shrink Tube
banggood.com/custlink/3GvmFQ3a9Q
2m×5mm x 0.2mm Solar PV Solder Ribbon Bus Bar Welding Wire Metal :
banggood.com/custlink/GGGvPsmL9T
Silicon wires:
banggood.com/custlink/3m3KHnvaOm




Thanks for watching.

Hope you enjoy in video and welcome to watch my other channel:

Tine Sedej:
youtube.com/channel/UCNwj7T3yDfUbmARRHERF8QA

Foto, video & editing: Tine Sedej

Camera:
Sony A6500 [sel 18-200 f3,5-5,6]
Sony A6000 [sel 30 f3.5macro]
GoPro 7 Black

Music is from: YouTube audiolibrary:
We Could Reach - Freedom Trail Studio