CM1033_ETA3000_Three-cell lithium-ion battery series protection balance board

This is a verification board for a CM1033_ETA3000 three-cell lithium-ion battery series protection balance board. It works normally, but hasn't been thoroughly tested (due to lack of resources).
When using the ETA3000, please note the following:
1. Before installing the batteries, connect them in parallel to balance the voltage. Installing batteries with significantly different voltages will damage the chips.
2. When installing the batteries, connect the EN pin to the BATAN pin with a jumper wire. Do this for each battery. After installing the batteries, remove the jumper wire. Installing batteries while in operation will damage the chips.
3. When removing batteries, also connect the EN and BATAN pins with a jumper wire; otherwise, the chips will damage, especially if BATP and BATAN are connected. Directly removing BATC will definitely cause damage.
4. Do not touch the chips unnecessarily. The image below shows a chip damage caused by a finger probe, which also burned the board.
 
I hope everyone can successfully build their boards without damaging chips or burning batteries, and that everything works normally.