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Best way to replace this battery with 18650/21700 1
Recently my £350 Bluetooth dongle had it stupid micro usb connector snap off.
I have a 3D printer so I’m going to print a new case to contain one or two 18650 or 21700 batteries. I’ve found a PCB on Amazon that takes a USB-C connection and charges 18650/21700. I know the basics of electronics but wanted to double check before I blow up this £350 dongle
Since the battery on it is a 3.7v and 18650/21700 are 3.7v too, can I just go from my 18650 bms to the connector where the old battery is directly? Or will I fry something?
I’m worried that it could get fried when charging, I can’t find any specs for the battery it currently has. I won’t be charging the new battery through the dongle as the USB connector has broken off. Instead of trying to fix the traces and add a new one, I want to 1. Replace the battery with something bigger, and 2. Have a way to charge this
Thanks for any help 🙂
Hello, you can unsolder the battery and the protection board. You’ll have to put a new charging board with a protection fonction (less than 5$ on AliExpress).
You are replacing lithium ion battery by another one so it won’t be a problem. You just have to be careful about over discharge, pouch batteries usually have a built in battery protection board, not 18650 or 21700
If you have any other questions, I often change lithium batteries, so AMA