How to Make a 3S 18650 Battery Pack
Intro: 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
STEP 1: Features
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
STEP 2: Stuff I Used
- 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
#Aliexpress
STEP 3: The Things You Need to Know
• 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
STEP 4: Attaching the BMS & Battery Holder
- Put 3 battery on the 18650 Battery Holder
- Use a double sided tape to stick BMS on the batteries
STEP 5: Connection
- Connect all the battery as shown in the schematic
STEP 6: How to Charge Them
- 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
STEP 7: Finishing
- Now check the output voltage
Thank you for visiting my Instructables
Stay tuned for next Projects
16 Comments
Hadi vong 4 years ago
syeedmdtuaha 3 years ago
hasanali9431 3 years ago
I have 6 litiyum ion batteria and this medule
HX-3S-FL10A
CAN I USE 6 BATTERIA WHIT THIS MEDULE ACORDING SENT PICTURE
gravinakristamarie 4 years ago
gravinakristamarie 4 years ago
rosekreuze 4 years ago
rosekreuze 4 years ago
Robear51 5 years ago
I did everything according to directions but don't get any voltage on P- and P+... Any thoughts?
Thanks
edit : After looking on the net and reading the specs on the charger, there is a mention that you have to charge it first to trigger the output.... Who knew lol.
Problem solved
RicardoC209 5 years ago
saadland 5 years ago
I want the 3S pack to be embedded in the device,and be able to charge it, just by connecting to power charger,I dont want to remove everytime the 3S pack to charge it.
What do you think ? any idea ?
michael_nonan 6 years ago
Hi, just a little clarification. in your 1st picture, the red and black wire is soldered to b- & b2, where does this wire go to?
DavidT577 6 years ago
DOH Kiselin please pay attention it's a balance charge board B+ & B- are the input/output.
Please correct me if I am wrong as I have amassed the parts and about to commence building this for a solar garden lamp PSU.
I will bookmark so if any help advice shortfalls...
David
DavidT577 6 years ago
Oops P+ and P- not B+ & B-
tnytvs 7 years ago
How long with this 12V last playing on a Bluetooth speaker?
IgorF2 7 years ago
Do you know if I can put cells in parallel to make a 3S2P battery pack?
Steve Willson Kujur 7 years ago