How to Make a 3S 18650 Battery Pack

Hey! everyone My name is Steve .

Today i'm going to show you How to make a 3S 18650 Battery Pack

3S batteries are widely used in many application such as Bluetooth Speaker , Rc Cars & and many things you can think of .

it can easily power any 12v application with no issues

Let's Get Started

Click Here to See The Video

Supply Output

• Nominal voltage - 11.1 v
• Maximum voltage - 12.6 v
• low voltage - 9 v

Safety Features

• Over-Discharge Protection
• Over-Charge Protection
• Short-Circuit Protection

• 18650 Battery " i've salvage this battery from a laptop battery Click here to see how "
• 18650 Battery Holder
• 10 A BMS Board

Buying Links

#Amazon

• 18650 Battery Holder click
• 10 A BMS Board click

#Aliexpress

• 18650 Battery Holder click
• 10 A BMS Board click

• It is necessary to use same capacity battery little up and down will be be ok ( example - 1750 mah , 1740 mah , 1730 mah )
• If you want to know how to check your real battery capacity "Click Here to See The Video "
• And it is very necessary to keep all the battery at same voltage " I found a best way to do this by connecting all the batteries in parallel and leave it over night "
• Be careful while doing this don't reverse the polarity

• Put 3 battery on the 18650 Battery Holder
• Use a double sided tape to stick BMS on the batteries

• Connect all the battery as shown in the schematic

• you can just use a 12.6 v lithium battery charger to charge this battery
• By the way i'll make a lithium battery charger later on so stay tuned for that

• Now check the output voltage

Click Here to See The Video

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