LiFePO4 AAA(10440) 3.2V Rechargeable Battery

I2C pull up resistors solder the jumpers if you need I2C and pull up for SDA and SCL

OT_PROG Digital Programming input for IC overtemperature threshold. Connect to GND for 60 C threshold or VSTOR for 120 C threshold.

Short SL5 or/and SL6 to use these buttons USER1, USER2

GPIO35 = RTC_GPIO5

GPIO34 = RTC_GPIO4

VOC_SAMP Sampling pin for MPPT network. Connect to the mid-point of external resistor divider between VIN_DC and GND for setting the MPP threshold voltage which will be stored on the VREF_SAMP pin. To disable the MPPT sampling circuit, connect to VSTOR

VBAT_OV = 3.15 V

VBAT_UV = 2.2 V

You can use all 4 cells or any amount of cells in your design. Each cell can generate up to 123mW

VBAT_OK = 2.44 V

You can bypass blocking diodes with these solder jumpers

This connector allows disconnecting the CH340C circuit from the rest of the components

VBAT_OK_HYST = 2.85 V