{"product_id":"21700-lithium-battery-capacity-tester-module-mah-mwh-digital-battery-power-detector-module-21700-battery-tester-type-c","title":"21700 Lithium Battery Capacity Tester Module MAh MWh Digital Power","description":"\u003cp\u003eDiscover the 21700 Lithium Battery Capacity Tester Module MAh MWh Digital Power — a standout electronics accessories pick featuring adjustable design for dependable, everyday performance.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cp\u003eBrand Name: Aideepen\u003c\/p\u003e\u003cp\u003eCondition: New\u003c\/p\u003e\u003cp\u003eType: Module\u003c\/p\u003e\u003cp\u003e21700 Features:\u003c\/p\u003e\u003cp\u003e1. Reverse polarity protection prevents device damage from misaligned batteries, ensuring safer and more reliable operation\u003c\/p\u003e\u003cp\u003e2. Four independent channels operate without interference, enabling simultaneous charging, discharging, capacity sorting, or aging tests for four 21700 batteries\u003c\/p\u003e\u003cp\u003e3. Features an ABS air-guiding base paired with a large 40x40mm fan for active, efficient cooling, ensuring stable long-term operation\u003c\/p\u003e\u003cp\u003e4. Delivers precise capacity measurement with reliable data, meeting high-precision battery performance evaluation requirements\u003c\/p\u003e\u003cp\u003e5. Supports Chinese\/English interface switching with real-time display of test parameters for intuitive, convenient operation\u003c\/p\u003e\u003cp\u003eProduct Specifications:\u003c\/p\u003e\u003cp\u003ePower Supply (User-Supplied): Requires two DC 5V 3A or higher adapters via Type-C port\u003c\/p\u003e\u003cp\u003eTest Subjects: Ternary LiFePO₄ 21700 batteries; cannot charge LiFePO₄ batteries\u003c\/p\u003e\u003cp\u003eCharge Voltage: 4.2V (fixed), powered by onboard 4506 charging chip\u003c\/p\u003e\u003cp\u003eCharge Current: Max 1A (non-constant current, fixed), controlled by 4056 chip\u003c\/p\u003e\u003cp\u003eStop (Discharge) Voltage: 2.5-3.5V (11-step adjustable)\u003c\/p\u003e\u003cp\u003eDischarge Current: Max 1A (non-constant current discharge, fixed)\u003c\/p\u003e\u003cp\u003eDischarge Resistor: 6W 3Ω 9J wire-wound resistor, modification not supported\u003c\/p\u003e\u003cp\u003eInternal Resistance Measurement Method: DC two-wire method principle test, results for reference only\u003c\/p\u003e\u003cp\u003e21700 Battery Testing: Direct testing without adapters\u003c\/p\u003e\u003cp\u003eCooling Method: 40*40mm fan active cooling\u003c\/p\u003e\u003cp\u003eReverse Polarity Protection: Supported\u003c\/p\u003e\u003cp\u003eMain Unit Dimensions: 147*102*33mm\u003c\/p\u003e\u003cp\u003ePackage Contents:\u003c\/p\u003e\u003cp\u003eTester ×1 (Batteries not included)\u003c\/p\u003e\u003cp\u003e21700+18650 Product Features:\u003c\/p\u003e\u003cp\u003e1. Reverse polarity protection prevents device damage from misinserted batteries, ensuring safer operation\u003c\/p\u003e\u003cp\u003e2. Four independent channels operate without interference, enabling simultaneous charging\/discharging, capacity sorting, or aging tests\u003c\/p\u003e\u003cp\u003e3. Features an ABS air-guiding base with a large 40*40mm fan for active, efficient cooling, ensuring stable long-term operation\u003c\/p\u003e\u003cp\u003e4. Delivers precise capacity measurement with reliable data, meeting high-precision battery performance evaluation requirements\u003c\/p\u003e\u003cp\u003e5. Supports Chinese\/English interface switching with real-time test parameter display for intuitive, convenient operation\u003c\/p\u003e\u003cp\u003eProduct Specifications:\u003c\/p\u003e\u003cp\u003ePower Supply (User-Supplied): Requires two DC 5V 3A or higher adapters via Type-C port\u003c\/p\u003e\u003cp\u003eTest Objects: Ternary LiFePO₄ 21700 batteries + 18650 Li-ion batteries. Not compatible with LiFePO₄ battery charging\u003c\/p\u003e\u003cp\u003eCharge Voltage: 4.2V fixed, non-adjustable. Utilizes onboard 4506 charging chip\u003c\/p\u003e\u003cp\u003eCharging Current: Maximum 1A non-constant current, non-adjustable, controlled by 4056 chip\u003c\/p\u003e\u003cp\u003eStop (Discharge) Voltage: 2.5-3.5V, 11-step adjustable\u003c\/p\u003e\u003cp\u003eDischarge Current: Maximum 1A non-constant current discharge, non-adjustable\u003c\/p\u003e\u003cp\u003eDischarge Resistor: 6W 3Ω 9J wire-wound resistor, modification not supported\u003c\/p\u003e\u003cp\u003eInternal Resistance Measurement Method: DC two-wire method principle test, results for reference only\u003c\/p\u003e\u003cp\u003eCooling Method: 40*40mm fan active cooling\u003c\/p\u003e\u003cp\u003eReverse Polarity Protection: Supported\u003c\/p\u003e\u003cp\u003eMain Unit Dimensions: 147*102*33mm\u003c\/p\u003e\u003cp\u003ePackage Contents:\u003c\/p\u003e\u003cp\u003eTester*1 (Shipped without batteries)\u003c\/p\u003e\u003ch3\u003eOptions\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e 21700 and 18650, 21700\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003ch4\u003eQ: What is the 21700 Lithium Battery Capacity Tester Module MAh MWh?\u003c\/h4\u003e\u003cp\u003eA: The 21700 Lithium Battery Capacity Tester Module MAh MWh is a quality electronics accessories pick. Reverse polarity protection prevents device damage from misaligned batteries, ensuring safer and more reliable operation 2.\u003c\/p\u003e\u003ch4\u003eQ: How do I use the 21700 Lithium Battery Capacity Tester Module MAh MWh?\u003c\/h4\u003e\u003cp\u003eA: The 21700 Lithium Battery Capacity Tester Module MAh MWh is ready to use right out of the box and makes an easy addition to your electronics accessories lineup.\u003c\/p\u003e\u003ch4\u003eQ: Why choose the 21700 Lithium Battery Capacity Tester Module MAh MWh?\u003c\/h4\u003e\u003cp\u003eA: The 21700 Lithium Battery Capacity Tester Module MAh MWh stands out in our electronics accessories range — Four independent channels operate without interference, enabling simultaneous charging, discharging, capacity sorting, or aging tests for four 21700 batteries 3.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What is the 21700 Lithium Battery Capacity Tester Module MAh MWh?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The 21700 Lithium Battery Capacity Tester Module MAh MWh is a quality electronics accessories pick. 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