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Open Muscle Band 12

Version 5.3.0
OM-Band12-6×2 & OM-Band12-12×1

OM-Band12 PCB


ESP32-S2 Mini by Wemos
Custom PCB
OpenMuscle V5.3.0

Power Management

MakerFocus 2A 5V Chargin Protection Module for 18650
4 in 1 (1) Charging / Discharging. (2) Lithium Battery Protection (3) Battery Level Indicator Module. (4) Lithium battery protection function:
• over-current
• overvoltage
• over-temperature
• short circuit protection.
In discharge mode (The charging mode KEY function is invalid), trigger the KEY port once to open the output; continuously trigger the KEY port twice to close the output.
The first time the load is connected, the output is automatically turned on. If the load is less than 50MA, the output will be automatically turned off after 30 seconds; if the load is greater than 50MA, the output will be automatically turned on.
Allow discharge while charging. (Note: At this time output voltage 4.7 / 5V)


Charging voltage: DC 4.5V-5.5V
Charging current: 0-2.1A
Charging quiescent current: 100uA
Full voltage: 4.2V+ -1%
Discharge current: 0-2.4A
Discharge quiescent current: 50uA
Discharge efficiency: up to 96%
Output voltage: 5V
Output current: 0-2.4A
Ambient temperature: -20℃ to + 85℃
PCB board process: Shen Jin
Size : 25 * 16 * 4mm

The module comes with lithium battery protection function:
• Over-current protection (OCP)
• Overvoltage protection (OVP)
• Short Circuit Protection (SCP)
• Over-temperature protection (OTP)
• Charge and discharge power level 4 interval indicati

Pin description:

VIN: Charge Port Positive Input +
GND: Charger Negative Input –
BAT: Lithium Battery +
GND: Lithium Battery –
GND: Output Negative Output –
OUT: Output Positive Output +
KEY: Output Enable Trigger Port (Low Pulse Trigger)

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