PCB Circuit

1.4 LED lights display power, and automatic shutdown is performed in non-working state; 2. The mainboard has protection, overcharge and overdischarge protection (about 3.2-4.2V) 4. Motherboard size: width 18mm * length 72mm. Note the following when installing the product: 1. The battery should be connected in parallel, and the voltage should be between 3.2-4.2V to work 2. The battery is directly connected to the motherboard B + is negatively connected to the motherboard B- , and the motherboard must be burned when installed in reverse 3. New and old batteries, high internal resistance batteries, batteries with large capacity gap are not recommended to be mixed 4. Check the shell kit. Batteries need to be connected in parallel. Weld the motherboard according to the positive and negative poles 5. Shell kit use 18650 battery core need flat head pointed head can not be used Available batteries: 18650 battery, cell phone battery, tablet battery, MP3 battery, etc. 3.1 v-4.2 v lithium polymer battery, (Note: If the battery has a protective board, it needs to be removed and connected to the motherboard) Unavailable batteries: dry battery, storage battery, 1.2V rechargeable battery, Ni-MH battery, 3.2V lithium iron polymer lithium battery, etc.

We are providing 3.7 Volt PCB Circuit to our customers providing  best quality to our customers at reasonable rates.