4S battery holder from the 7S design

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STD 4S battery holder from the 7S design

License: CC-BY-SA 3.0

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Cloned from 7S battery holder

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Update time： 2021-06-12 08:21:47

Creation time： 2018-08-03 22:03:37

Description

** Not tested yet ** This design improment came from the following video: https://youtu.be/9YwErplHps8 The improvemtns that I made: 1. Different battery holder: A. So the battaris will snap in and will not fall off. B. The battery is not in a case, so better air flow. C. The holders can dissapate the battery heat to the PCB. 2. Large ground plane to cool the battery. 3. Small jumpers so the PCB can be anything from 2S-7S 4. M3 holes to be used with brass spacers. 5. Smaller overall PCB. 6. Some other improments. [Battery Clip](https://www.aliexpress.com/item/10pcs-lot-18650-Battery-Clip-for-18650-CR123A-Battery-Spring-Steel-TBH-18650-CLIP01/32878580008.html?spm=a2g0s.9042311.0.0.217f4c4d52mlR2) [8 Pin Header](https://www.aliexpress.com/item/10pcs-lot-Pin-Header-8-pin-2-54MM-10MM-Long-Needle-Female-Pin-Header-Strip-Stackable/32880820411.html?spm=a2g0s.9042311.0.0.6f3f4c4dLyNjlP)

Design Drawing

schematic diagram

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4S Power Bank
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PCB

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PCB_V1
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BOM

BOM download Purchase Parts

ID	Name	Designator	Footprint	Quantity	Mounted
1	54_THM-18650_Battery_Holder	B1,B2	54 THM HOLE	2	Yes	36-54-ND
2	54_THM-18650_Battery_Holder	B3,B4	54_THM_HOLE	2	Yes	36-54-ND
3	SMD2920P300TF/15	F1	SMD2920	1	Yes	C20829
4	SOLDERJUMPERNC	SJ1	SJ_2S_L	1	Yes
5	TEST-POINT3X4	TP3	PAD.03X.04	1	Yes
6	SOLDERJUMPERNC Large	3S,2S	SJ_2S_L	2	Yes
7	Header-Male-2.54_1x5	P1	DIP-1X5P-2.54MM-M	1	Yes	C124379