How to Convert 12v 7Ah Lead Acid Battery Into 12v 16.8Ah Li-Ion Battery Pack and 50400mAh Power Bank

#ErCanEverything #LeadAcidBattery #PowerBank

💥In this video you watched how I'm converted a 12V 7Ah Lead Acid Battery to 12V 16.8Ah Li-Ion and 50,400mAh 181Wh QC3.0 Supported Dual Power Bank

💥I used SANYO UR18650AA Cells
Rated capacity: 2100mAh
Nominal voltage: 3.6V
Standard charge current: 1505mA
Charge end voltage: 4.20V
Charge cut-off current: 43mA
Max. discharge current: 4.3A

💥3S 11.1 - 12.6V 40A BMS:
🔋Scope: Nominal voltage of 3.6V, 3.7V lithium battery (including 18650,26650, polymer lithium battery)
Product Size: 42 * 60 * 3.4mm (balanced version)
Product weight: 9.8g (balanced version)
Charging voltage: 12.6V - 13.6V
Continuous discharge current (upper limit): 40A (if the cooling environment is not good, please reduce the load current use)
Continuous charge current (upper limit): 20A
Balance version: suitable for starting current below 80A, power 170W below the drill.

💥USB QC3.0 QC2.0 USB DC-DC Buck Converter Charging Step Down Module 6-32V to 5V 9V 12V 24V Fast Quick Charger Circuit Board
🔋(Product Features · Input voltage range: 6V-32V · Output voltage: default 5V, automatically adjust between 3-12V after triggering fast charge · Output power: up to 24W (5V/3.4A, 9V/2.5A, 12V/2A, etc.) · Output voltage cable compensation function · Conversion efficiency: 90%-97% · Support multiple fast charging protocols · Input overvoltage and undervoltage protection · Input overcurrent protection · Output overcurrent, short circuit protection · Machine over temperature protection Support fast charge agreement · Support DCP protocol, BC1.2, Apple, Samsung protocol · Support Huawei Fast Charge Protocol FCP/SCP · Support Huawei Fast Charge Protocol AFC · Support Spreadtrum Fast Charge Protocol SFCP · Support Qualcomm QC2.0 and 3.0 · Support MTK PE1.1/PE2.0)

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[hyperrunner]

Woww, plastic bottle shrink wrap was mind-blowing 🤯

[boblewis]

I made one of these about 2 years ago using a commercial case kit inc BMS. No on/off switch but added a small push button switch and a battery level meter. I also made another including a cell monitor instead which shows voltage overall plus volts on each bank & alarms when individual banks drop below minimum volts. The level display and the alarm/monitor are available online for a low price and are a worthwhile addition.

[lloydsshednanigans]

I must say, this is one of the most well thought out builds I've seen for a long time. Careful wire runs etc. Suggestions, if I may, I would also have another 2 series links (like another comment said) and I would like to see some thermal separation between the charge controller and the battery pack. Either the thin composite board for even Kapton tape in a pinch. Also, I know it was sped up and it's hard to tell, but when using the heat gun to shrink the plastic, take a break every now and then so as not to stress the cells out from overheating. Oh and whack some hot glue or kapton tape over the 12v terminal undersides for good measure. If something pops off under that lot, then there could be a colourful fireworks display. All just suggestions and not meant as a criticism.

[troyyarbrough]

Dude has some serious soldering skills. And the plastic bottle shrink wrap was an awesome trick.

[sincerelyyours]

A very fine build, I was not aware that a pack of 18650 cells would fit so perfectly inside a 12V gel-cell case. Also was not aware that a PET bottle would shrink so nicely over an 18650 pack - a good idea if/when you don't have commercial Heat Shrink Tubing that large when you need it. I would like to give three minor suggestions: First, go easy on the heat around the cells when shrinking down the covering (as Lloyd's Shednanigans suggested below) to avoid overheating the pack. Second, use 1/4" tinned braid instead of flattened solid core wire to join the cells together. It's just as thin but will carry more current and give you a small degree of flexibility which could prevent a cracked solder joint from disabling or causing sparks inside the pack. And third, put in an inline fuse, such as an auto fuse, above the cells like you did the switch and USB connectors to protect the pack from over-current situations.

[stevemiller]

Man the most amazing part of this video is the heat shrink it is effective and good for the environment I learn a lot from this video thanks 😊

[PlayerLeonardo]

Instant like for the idea of using an old plastic bottle around the battery to protect it. Great ideia!

[mai-owmk]

Instant like for the idea of using an old plastic bottle around the battery to protect it. Great ideia!

[vladtepes]

Получил огромное удовольствие от проделанной работы. Что бы у тебя НИКОГДА не болели руки

[ErCanEverything]

This video has 322K views, so maybe it will bе interesting for YOU.
DIY 20 000 mAh QC3.0 Supported Parkside Power Bank from 20V 4Ah Parkside Battery! Just for $1

[kimmer]

Very nice build. My dyslexia saw 50, 400 ah watt hour??? battery and thought it was bigger than my battery pack. Mine is 3600 Amp Hours, 46, 000 Watt Hours and needs a forklift to move. I stayed to the end and was impressed with your skills. I had a bit of PTSD with the Dremel tool work as it sounded like the root canal I had that went wrong. Very nice work!

[kiranvc]

Wires stripping
Soldering
Battery arranging
Plastic Wrapping
Wires bending
Holes drilling
Overall Packing

What a neet aesthetic electrician you are ! ❤️‍🔥

[artursmihelsons]

Excellent project! I have same BMS, but I planned to use it in drill battery.. Now I considering to use it in garage Lithium battery project to replace SLA.. My solar charger can charge SLA and Lithium, only I need to change settings..
Love idea to use old used soda bottle as heat shrink tube! ❤️👍
Great video with cool ideas!

[AshiqurRahman]

But what about these cells? How would you find promising 18650 which will keep it's original capacity for say like 1 year....

[gregorykusiak]

I would’ve bought a project box rather than risk exposing myself to the lead and acid.
I was going a little insane that there seemed to be some solder rationing happening - a little solder on each surface will help them stick better/faster and longer/more reliably

[AlanFox]

На это хочется смотреть бесконечно😌😌Человек - гений👍.

[Sobakin]

Nice. But I prefer 4S LiFePo4 for lead-acid alternative because of better voltage equality and compatibility with chargers and equipment and higher currents capability. Did in same case battery from 4 32700 6a-h elements, it can start Yamaha R6 engine. Now building in case of originall motorcycle battery which is a 5mm thicker so I can install 4x 33140 15a-h LiFePo4 elements, and battery is still lighter than original lead-acid was (2kg vs 2.8kg)

[Az_video]

প্লাস্টিক বোতল এই কাজ টা করে ফেললেন আমি তো অবাক আর জিনিসটা এত সুন্দর হয়েছে বলে বোঝাতে পারবো না সত্যি বুদ্ধি মানতে হবে এই প্রথম এমন কম খরচে এত সুন্দর জিনিষ টা না দেখে কমমেন্ট না করে থাকতে পারলাম না 😊😊 !

[TheSpotify]

20:20 The bench PSU was shut off because the over charge protection (battery BMS) turned off the charge, the battery voltage was over 12.9V which is too much for a 3S Lithium Ion battery pack.
Li-Ion cells should not be charged to anything higher than 4.2V per cell, which is 12.6V total. So you need to set your power supply to 12.6V and wait until it drops down to a very low charging current.

[andymora]

This is a wonderful project! If I built it, I would not trust the bottle as insulation material. I would add an extra layer. And also a separate layer between the external battery poles and the PCB. In case a wire is getting lose, it can lead to a serious shortcut and fire.
A fuse would also be good to protect the device, at best an external fuse which can be reset in case it has tripped.
Battery voltage of 12, 2V is very low for lead acid batteries, most appliances need voltages between 12 and 13V. If I connect a battery charger for 18V batterys to a 12V lead acid battery, it stops charging the connected battery if voltage is lower than 12V. Also consider that there is a voltage drop inside battery and on the lines.