Unlike older MAX232-based modules that require a strict 5V power rail, the HW-044 utilizes the advanced . This allows it to interface seamlessly with both 3.3V and 5V systems without requiring an external logic-level shifter. Connecting HCM375B-232-68N with arduino
The HW-044 module operates as a constant-current/constant-voltage (CC/CV) linear charger. Below are the key electrical and physical parameters: 4.5V to 5.5V DC Full Charge Voltage: 4.2V DC (accuracy within ±1%) hw-044 datasheet
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