Small BMS for Li-Po

Theliadir T. OP #7022927
Rate this post
• ▲ useful
▼ not useful 
Hello

I am building a small electronics project.
In it I want to use a rechargeable Li-Po battery.
I use this Li-Po:
https://de.aliexpress.com/item/32770011525.html?gatewayAdapt=glo2deu&spm=a2g0o.order_list.0.0.21ef5c5feYh48G

Now I am looking for a battery management system.
My project is quite small, so I also need a BMS as small as possible. I 
found this module.
https://de.aliexpress.com/item/33050079276.html?gatewayAdapt=glo2deu&spm=a2g0o.order_detail.0.0.242a6368JCxi4R

There are other modules which specifically have an input for voltage 
charging and an output for the load.

Can I connect the battery as in the picture? (Charging and load directly 
connected to the battery)
Does the battery charge when it's connected to the power or do I have to 
break the circuit to the load while charging?
Or do I need a different BMS?
Attached files:
Reply Quote Edit Move Thread sperren Anmeldepflicht aktivieren Anpinnen Delete topic Thread mit anderem zusammenführen Report post
pegelwendler Guest #7023496
Rate this post
• ▲ useful
▼ not useful 
Wouldn't.
Your module doesn't include a protection against discharging below safe 
levels.
This one does: https://de.aliexpress.com/item/32930640893.html
Also, I would strongly consider limiting the charge current. Your module 
(and mine) state 1A by default. Your battery has 240 mAh and will likely 
be fried if you actually pump it with 1A.
If possible, limit the charge current to something way below 1A.
Table for appropriate resitor here:
https://www.reichelt.de/entwicklerboards-ladeplatine-fuer-3-7v-li-akkus-usb-c-1a-debo1-3-7li-1-0a-p291398.html
Personally, I'd go with 70 mA.
Reply Quote Edit Delete Report post
Watch this topic

Reply

Note: the original post is older than 6 months. Please don't ask any new questions in this thread, but start a new one.

Formatting
  • [c]C-Code[/c]
  • [code]code in other languages, ASCII drawings[/code]
  • [math]formula (LaTeX syntax)[/math]
  • [[Title]] – link to an article
  • Link to another post: right-click its post ID (#8078628), copy the address, paste it into the text

More about formatting

Post long source code as an attachment, not in the text.

Your name and e-mail address

Already registered? Log in

Not shown to anyone. We send you a link; your post appears once you confirm it there.

By submitting you create a free account and accept the terms of use.