1.PCBA (The stability of Bluetooth Speaker depend on PCBA)
2.Battery and projection plate ( contain batteries protection board, Ensure the quality, to ensure safety)
Why need battery protection plate?
Lithium battery protection function is usually performed by coprotective other current devices, protection board is composed of electronic circuit devices,ambient -40 ℃ to + 85 ℃ time accurate monitoring of voltage and charge batteries back into the road current and timely control current loop off;
PTC at high temperatures to prevent the occurrence of severe damage to the battery.
Jumon test battery one by one before battery assemble
Bluetooth Test & The horn db test ( check one by one to make quality guarantee)
The test more than these in our factory, more testing in production, welcome to visit our factory to see how to control quality.