18650 7s 3s 4s diy ups

1,094 views · Published 2 October 2018 · 12:24 · Indexed 30 September 2026

Channel: Andy Shell · 2018 · Science & Technology

Watch on YouTube

Update: since then I have ditch the 3s 4s idea. it's too much trouble and imbalances the pack. 
Updated design! check out: https://youtu.be/TWab33El9sg


Update: these videos are very old and i feel have a lot of misinformation / out of date ideas. please watch my most recent videos instead :)

https://www.bitchute.com/channel/andy-shell/

Hello! I'm Andy and this is my video log of designing and building the cheapest most modular and easy to fix, diagnose and build power wall. Watch my latest videos for updates and ask any questions if you're not sure. 

Thanks for watching! 

Referral links: (helps me buy and test it all this stuff lol)

USB output Tester: https://ebay.to/2Xb5pWB
best USB phone charger 24v QC3.0 Dual USB 5-29.4vdc: https://ebay.to/2JBEn72
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lii-500: https://ebay.to/2IVSjsu
opus: https://ebay.to/2ZXCdnE
tp4056: https://ebay.to/2Jg5inz
mini volt meter: https://ebay.to/324t4vJ
HW-586 battery tester: https://ebay.to/2KMAttQ
hw-586 case: https://ebay.to/2FH0CXb
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spot welder:
alumina copper spot welding rod: https://ebay.to/2V4OzZ6
spot welder pcb: https://ebay.to/2SMkQCq
foot pedal switch: https://ebay.to/2HM6MYr
buy an old microwave off kajiji or thrift store 800watts is good
amazon or local hardware store for wire. 2.5meters ish
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A/C power parts:
Male Power Socket 10A 250V 3Pin IEC320 C14 Inlet: https://ebay.to/2XDwgPb
110ac to dc power supplies: https://ebay.to/2HNiRN9
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House Lighting system parts:
12-24vdc LED lights: https://ebay.to/2THFfcK
big waterproof dpdt switch: https://ebay.to/2Yofm4i
2k Pot+cap: https://ebay.to/2XgyxvO
5.5$ 12x var pots: https://ebay.to/2RJ6t2U
5$ 9x var pots with caps: https://ebay.to/2FBsifZ
5$ 200W 8A buck converter 6-40V to 1.2-36V: https://ebay.to/31Z7icx
diodes: https://ebay.to/306dWfx
terminal connectors: https://ebay.to/2Cfjny4
resistor set: https://ebay.to/2QKAGMM
Fuse holder: https://ebay.to/2XCeH2i
fuse kit: https://ebay.to/2X9OVhh
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BMS Balancing boards:
63$ 60A Bluetooth BMS 7s: https://bit.ly/2xhWurS
32$ 60A dis, 30A charge, 60mA balance on/of sw: https://ebay.to/2IYekXp
16$ 7S 20A BMS Protection Board: https://ebay.to/2RN7ZU7
3$ terrible 66mA Balance board: https://ebay.to/2Fql8gc
100A 7s 60mA bms: https://ebay.to/2VL5Ffz
160$ SBMS0 200mA bms: electrodacus.com
kickstarter.com/projects/electrodacus/solar-bms-and-digital-mppt-for-pv-electricty-and-h
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3.5$ 4s bms 100mA: https://ebay.to/2LrBVkV
3.7$ 3s bms 100mA: https://ebay.to/2XyPnKx  
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Dremel saw blades: https://www.banggood.com/custlink/KGKDdBU50k
Dremel discs: https://www.banggood.com/custlink/Gv33E4kHNm
Dremel guide: https://www.banggood.com/custlink/v3mKR42HnE and https://ebay.to/2V4OULm 
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Wall chargers:
29$ 4A charger: https://ebay.to/2Jcb0XR
37$ 5A charger: https://ebay.to/2YpfcKe
42$ 7A charger: https://ebay.to/2XHNRFK
64$ 10A waterproof: https://ebay.to/2LuPekH
78$ 15A: https://ebay.to/2IXfcvq 
ISDT T8 BattGo 1-8s balancer: https://www.banggood.com/custlink/GvK3rvq9r0
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18650 holder 4x: https://ebay.to/2YpCpvG
4x1 screws: https://amzn.to/2Yl5cB0
Fuse wire 30 AWG Tinned Cu 28$ 3140'x0.0100" https://amzn.to/2NmxXwz
dc breakers (20,30,40,50...100Amp): https://ebay.to/2TPWLM2
Cable lugs 8awg 5/16": https://ebay.to/2ssDGUd
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2,3,4,5 or 6p tabbing wire: https://ebay.to/2XB6Ulf
18650 spacers pack: https://ebay.to/2FDOZQA
1m pvc heat shrink 150mm 4x? spacers: https://ebay.to/2ZWKFUk
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12vdc desktop computer ATX power supply: https://ebay.to/2VT1bTZ
buck to 12vdc converter: https://ebay.to/2sqBg8Y
5$ 200W 8A buck converter 6-40V to 1.2-36V: https://ebay.to/31Z7icx
11$ 300w 20A buck: https://ebay.to/2FI0iqU
19$ 6A buck boost 10-40 to 0-38v: https://ebay.to/2QLUpvJ 
7$ 15A 400w boost converter: https://ebay.to/2Rp82WK
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14$ 5A MPPT CC/CV buck converter 6-36v to 1.25-32v: https://ebay.to/2JccMrZ
50$ mpt-7210A mppt boost: https://ebay.to/2KOwnS2
20$ pwm 20A 29.4v solar charge controller: https://ebay.to/2xn7a8J
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DIY SOLAR PANEL PARTS:
60 cell panels are best for 7s 29.4v systems
urethane @ lowes: https://bit.ly/2RcHL9n
45v 10A Schottky Diode 10SQ045:https://ebay.to/2JbE5Tb
0.37w 78x26mm:      https://bit.ly/2sI7LiX
0.43w 52x52mm       https://bit.ly/2CFQ87P
0.66w 78x52mm       https://bit.ly/2FO2lM3
1.75w 156mmx62.4mm: https://bit.ly/2RHDMGE 
2.55w 156x104MM:    https://bit.ly/2UiqAFl
4.38w 156×156mm:    https://bit.ly/2FJy7d0
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photo resistor kit: https://ebay.to/2Nj8K6j
5x 5K Potentiometer 15mm ON OFF Switch: https://ebay.to/2RuLHaf
2$ 5x DPDT on/off/on clip-in: https://ebay.to/2Yvcm68
2.4$ 5x DPDT on/off/on screw-in: https://ebay.to/2xk5Bbo
2$ 20x SPDT micro switch: https://ebay.to/2HaUyr6
2$ 5x SPDT switch: https://ebay.to/2FGOJQW
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