IP5568

V1.31

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1 LED mode 1 display:

During charging: LED flash on cycle of 2s (1s on and 1s off), when fully charged, constantly on;

During discharging: LED is constantly on, when voltage lower than 3.2V, flash on cycle of 1s (0.5s on and 0.5s off),

when voltage is lower than 3.0V, system is power down.

188 nixie tube display mode

The 188 nixie tube model IP5568 supported as below

Nixie Tube

During charging

During discharging

Not fully charged

Fullly charged

Battery capacity <5%

Battery capacity>5%

188（YF2252SR-5） 0-99% 0.5HZ Flash

constantly on 100%

0-5% 1.0Hz Flash

5%-100% constantly on

5pin 188 nixie tube：

Figure 7

5pin 188 nixie tube circuit