15pcs TP4057 1A 3.7V Lithium Battery Charging Board Type-C Interface with Protection Board 18650 Lithium Polymer Battery Charging Board

아마존 달러(USD) 가격을 각 날짜의 환율로 원화 환산해 표시합니다. 현재 환율 $1 = ₩1,467 (2026-07-29 기준)

상품 특징

• Upgraded Version: Compared with TP4056, the withstand voltage of TP4057 is increased from 6V to 9V, which can avoid power spike voltage loss module; supports up to 1A programmable linear charging current, accurately adapt to battery needs and extend battery life
• Automatic Charge Cycle Control: When the charging current reaches the final float charge voltage and drops to 100mA, the charging cycle will be automatically terminated; when the battery voltage drops below 4.05V (corresponding to 80%-90% of the battery capacity), the charging cycle will restart
• Multiple Safety Protections: TP4057 charging module has a protection board that integrates overvoltage protection, over-discharge protection, over-current protection, and over-temperature protection. The over-discharge protection value is 2.4V, and the over-current protection value is 4A
• Application Scenarios: TP4057 charging module can be used in wearable devices such as smart watches/bracelets; portable products such as Bluetooth headsets and mobile power supplies; IoT sensors, small drones and other low-power scenarios. Suitable for consumer electronic products and mass production
• Note: Batteries cannot be connected in series, only in parallel. The number of batteries in parallel can be more or less, but too many is not recommended; the power cord needs to be welded, but the wire should not be too thin, otherwise it will not work properly; first use requires a power supply to activate the protection board

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