Battery Protection & Charging: Why Inconsistent Voltages and Activation Steps?

Battery Protection & Charging: Why Inconsistent Voltages and Activation Steps?

1. The order of wiring is wrong, measure the wiring to confirm whether the voltage of each battery string is correct. 
2. After power-on protection, the lithium iron battery is at 2.8V-3.4V, and the polymer (ternary) is at 3V-4V. Charge or discharge the battery to the voltage range without the protection board, and then connect the protection board. 
3. The discharge MOS tube is closed. Charge activation