Product Description
134N3P
This lithium battery charging protection board and USB charger is designed for charging and discharging lithium batteries. It features a built-in charging and discharging power MOS, preset charging voltage, and various protection functions.
Key Features:
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- Charging and discharging indication
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- Internally installed charging and discharging power MOS
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- Preset 4.2V charging voltage, precision ±1%
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- Max 8uA standby current
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- Integrated charging management and discharging management
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- Intelligent temperature control and over-temperature protection
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- Integrated output over-voltage protection, short circuit protection, overload protection
- Integrated overcharging and over-discharging protection
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- Support trickle mode and zero voltage charging
Specifications:
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- Input voltage: 3.7V~5.5V
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- Charging current: 1A (max)
- Output current: 1A (max)
- Output voltage: 5V
- BAT discharging stop voltage: 2.9V
- Discharging efficiency: 85% (input 3.7V output 5V/1A)
Product Description
Type-C USB 5V 2A Boost Converter Step-Up Power Module Lithium Battery Charging
This lithium battery charging protection board and USB charger is designed for charging and discharging lithium batteries with Type-C USB interface. It features various protection functions and supports external buttons for power control.
Key Features:
- Automatically turns off the output when the load current is continuously less than 50mA
- Supports external buttons for power control
- Automatically terminates the charging cycle when the charging current drops to 100mA
- Restarts the charging cycle when the battery voltage drops below 4.1V
- Precharges the battery with a current of 180mA when the battery voltage is lower than 2.8V
- Provides USB-A female socket welding position on the back
- Supports charging and discharging
Specifications:
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- Input voltage range: 5V~5.5V
- Charging cut-off voltage: (4.2V/4.35V) ±0.5%
- Charging current: 2.4A±5%
- Boost output voltage: 5V±5.15V (wire loss compensation)
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- Boost output voltage ripple: 100mV
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- Boost output current: 2A
- Boost conversion efficiency: 92.5% (3.6V input, 5V2A Output)
- Battery end quiescent current: 30uA
- Material: Metal and Plastic
- Size: approx.18x23mm/0.71×0.91in
- Color: As pictures shown
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