All-Compatible 8-slot LCD Smart Li-ion Battery Charger Apply to 3.6V/3.7V Li-ion/IMR/INR/ICR batteries: 10440 14500 14650 16340 17500 17670 18350 18490 18500 18650 18700 20700 21700 22650 25500 26650 1.2V Ni-MH / Ni-CD: AAAA / AAA / AA / A / SC / C Note: Can charge protected 20700/21700 batteries. Specification: -Input:QC3.0（5V2A / 9V2A） -Adjustable Constant Current:1@3A，2@2A， 4@1A，8@ 0.5A -End-of Charge Voltage:4.20±0.05V / 1.45±0.1V -End-of Charge Current:≤120mA -Operating Temperature:0-40℃ USB C 8 X 21700 Protected Battery Charger with Capacity Test Function Your Intelligent Battery Doctor 1. Support QC3.0 fast charging, max 3A for a single slot when the battery resistance is low enough. 2. In grading mode (for CH1-CH4), the charger tests batteries’ real capacity by “charging-discharging-charging” the batteries. 3. Besides the intelligent charging, the charger also has 5 optional currents (3A, 2A 1A 0.5A 0.25A) for users to choose 4. Can charge 1 battery at one time, or charge 8 batteries at the same time, save your time and improve the efficiency. Multiple Protections Ensure Safe Charging *Built-in high-precision MCU, over-current, over-charge, over-voltage, and short-circuit protection, combined with XTAR's soft-start function, makes the precision of end-of-charge voltage up to ±1%. The charger will automatically stop charging after fully charged batteries, safe.. *Constructed from flame-retardant and fire-resistant ABS materials to extend the charger’s lifespan and ensure safety. *Built-in real-time temperature control protection system makes the battery charging process more stable. Test Batteries’ Real Capacity In grading mode (for CH1-CH4), the charger tests batteries’ real capacity by “charging-discharging-charging” the batteries. It can be switched to the GRAD mode by pressing the MODE button. The VC8 adopts the standard 300mA stable discharge current to make the test more accurate. After completion, the screen will flash back to show donE and the capacity Maximize Batteries’ Lifespan The charger can charge or discharge the battery to its rated voltage in storing mode (for CH1-CH4), when the battery is not used for a long time or used for long-distance transportation, so as to maximize the battery lifespan and save energy. ---When the battery voltage is at its rated voltage, its self-discharge rate is the slowest and also most stable. Detect the Battery Type After inserting batteries, the charger will automatically identify the battery type, along with battery resistance and input power, to select the most suitable charging method, so that users don’t need to select manually 18650 Battery charger 8 bays VC8 Q&A 1. Q: why does the battery voltage not display 4.2V after the Li-ion battery is fully charged? A: The accuracy of charging cut-off voltage of vc8 charger for li-ion battery is ± 1%, the display range of battery voltage after full charge is 4.16 ~ 4.24V. However, the charging cut-off voltage is also affected by the internal resistance. The higher the internal resistance is, the lower the charging cut-off voltage is. Sometimes the cut-off voltage lower than 4.16v is normal. (same for Ni MH battery) 2. Q: Why is the display voltage of the same battery different in different modes (charging mode-capacity mode-storage mode)? A: Under normal circumstances, switching to different modes(charging mode -capacity mode-storage mode), the charging current will also change accordingly, resulting in acorresponding change in the real-time voltage, which is a normal phenomenon. 3. Q: How does the charging current reach 3A? A: The battery must meet the following five requirements for charging: 1) The battery must be placed in CH1 or CH8; 2) a QC3.0 adapter and a data cable that can pass 3A current must be used; 3) The manual current gear must be adjusted to 3A; 18650 Battery charger 8 bays VC8 Q&A 1. Q: why does the battery voltage not display 4.2V after the Li-ion battery is fully charged? A: The accuracy of charging cut-off voltage of vc8 charger for li-ion battery is ± 1%, the display range of battery voltage after full charge is 4.16 ~ 4.24V. However, the charging cut-off voltage is also affected by the internal resistance. The higher the internal resistance is, the lower the charging cut-off voltage is. Sometimes the cut-off voltage lower than 4.16v is normal. (same for Ni MH battery) 2. Q: Why is the display voltage of the same battery different in different modes (charging mode-capacity mode-storage mode)? A: Under normal circumstances, switching to different modes(charging mode -capacity mode-storage mode), the charging current will also change accordingly, resulting in acorresponding change in the real-time voltage, which is a normal phenomenon. 3. Q: How does the charging current reach 3A? A: The battery must meet the following five requirements for charging: 1) The battery must be placed in CH1 or CH8; 2) a QC3.0 adapter and a data cable that can pass 3A current must be used; 3) The manual current gear must be adjusted to 3A; 4.Q: Why the internal resistance of battery different in several tests? A: It is necessary to determine whether the battery is in good contact with the positive and negative plates. The charger uses pulses current to test the internal resistance. When the battery voltage is particularly low, the internal resistance tested will be large. The most suitable test voltage is range 3.6 V~3.8V. In order to prevent over-charge., the test will be interrupted if the battery voltage is higher than 4.16V. 5.Q: why is my battery charging capacity lower than its nominal value? A: The nominal capacity value of the battery is the capacity value after the lithium battery is discharged to 2.75V with 0.1C ~ 0.2C, and then charged with standard charge of 0.2C. At present, in order to prevent the battery from over discharge, most of the equipment that uses the battery is to set the voltage of 3.0V ~ 3.3V and shut down to stop using. Therefore, 10% ~ 20% of the actual power is not empty. In this case, the measured charging capacity will certainly be less than the nominal value of the battery. If you need to know the accurate capacity of the battery, you can test it by grad mode. 6. Q: why do you find that the Ni MH battery is a little hot when it is fully charged? A: Ni-MH battery has a special way to judge whether the battery has been fully charged by the change of negative pressure and 0 voltage after the battery is fully charged. In this stage, the Ni-MH battery no longer stores energy, but converts the charged energy into heat energy through chemical reaction. The better Ni MH battery can quickly appear negative pressure, but the worse battery will be in this process for a period of time. So there will be some heating, but this is a normal phenomenon, and will not affect the battery life. 4.Q: Why the internal resistance of battery different in several tests? A: It is necessary to determine whether the battery is in good contact with the positive and negative plates. The charger uses pulses current to test the internal resistance. When the battery voltage is particularly low, the internal resistance tested will be large. The most suitable test voltage is range 3.6 V~3.8V. In order to prevent over-charge., the test will be interrupted if the battery voltage is higher than 4.16V. 5.Q: why is my battery charging capacity lower than its nominal value? A: The nominal capacity value of the battery is the capacity value after the lithium battery is discharged to 2.75V with 0.1C ~ 0.2C, and then charged with standard charge of 0.2C. At present, in order to prevent the battery from over discharge, most of the equipment that uses the battery is to set the voltage of 3.0V ~ 3.3V and shut down to stop using. Therefore, 10% ~ 20% of the actual power is not empty. In this case, the measured charging capacity will certainly be less than the nominal value of the battery. If you need to know the accurate capacity of the battery, you can test it by grad mode. 6. Q: why do you find that the Ni MH battery is a little hot when it is fully charged? A: Ni-MH battery has a special way to judge whether the battery has been fully charged by the change of negative pressure and 0 voltage after the battery is fully charged. In this stage, the Ni-MH battery no longer stores energy, but converts the charged energy into heat energy through chemical reaction. The better Ni MH battery can quickly appear negative pressure, but the worse battery will be in this process for a period of time. So there will be some heating, but this is a normal phenomenon, and will not affect the battery life. VP4 PLUS Battery charger VC8+QC3.0 VC8 PLUS+12V 3A VC4SL+QC3.0 X4 battery charger PB2S Battery charger Add to Cart Add to Cart Buying Options Add to Cart Buying Options Add to Cart Customer Reviews 4.4 out of 5 stars 200 4.2 out of 5 stars 630 — 4.5 out of 5 stars 276 4.4 out of 5 stars 131 4.0 out of 5 stars 341 Price $67.99$67.99 $42.99$42.99 — no data $32.99$32.99 — no data $21.99$21.99 Compatible Battery Charge 1) 3.6V/3.7V Li-ion/IMR/INR/ICR 10440/14500/ 14650/16340/ 17335/17500/17670/18350/18490 /18500/18650/18700/20700/ 21700/22650/25500/26650/32650 2) 1.2V Ni-MH/Ni-CD AAAA / AAA / AA / A / SC / C / D 3) 11.1V 3S Battery Pack 3.6V/3.7V Li-ion/IMR/INR/ICR 10440 / 14500 / 14650 / 16340 / 17500 / 17670 / 18350 / 18490 / 18500 / 18650 / 18700 / 20700 / 21700 / 22650 / 25500 / 26650 Protected 20700/21700 1.2V Ni-MH/Ni-CD AAAA / AAA / AA / A / SC / C 3.6V/3.7V Li-ion/IMR/INR/ICR 10440 / 14500 / 14650 / 16340 / 17500 / 17670 / 18350 / 18490 / 18500 / 18650 / 18700 / 20700 / 21700 / 22650 / 25500 / 26650 Protected 20700/21700 1.2V Ni-MH/Ni-CD AAAA / AAA / AA / A / SC / C Apply to 3.6 V / 3.7 V LI - ion/MR/INR/ICR 10440/14500/17335/17500/14650/16340/17670/18350/18650/18700/18490/18500/20700/21700/22650/25500/26650/32650 1.2V NI-MH/NI-CD AAAA/AAA/AA/A/SC/C Note: Can charge protected 21700 batteries. Apply to: 3.6V/3.7V Li-ion/IMR/INR/ICR 14500/14650/16340/17335/17500/17670/18350/18490/18500/18650/18700/20700/21700/22650/25500/26650 1.2V Ni-MH/Ni-CD AAAA/AAA/AA/A/SC/C Note: Can also charge protected 20700/21700 batteries Charge 3.6/3.7V unprotected 18650/18700/20700/21700 and protected 18650 Li-ion/IMR/INR/ICR batteries. LCD Display 1.Charging Current 2.Battery Pack Status 3.Charging Capacity Percentage 4.Battery Types 5.Battery Channel 6.Battery Voltage 6.Battery Resistance 7.Charge/Test/Refresh Status 1.Battery Voltage 2.Real-time power 3. Charging capacity 4.Battery Type 5.Battery Internal Resistance 6.Charging Current Gear 1.Battery Voltage 2.Real-time power 3. Charging capacity 4.Battery Type 5.Battery Internal Resistance 6.Charging Current Gear 1.Charging Current Gear 2.Battery Voltage 3.Charging Capacity 4.Battery Type 5.Battery Channel 1.Charging Current 2.Battery Voltage 3.Charging Capacity 4.Battery Type 5.Battery Channel 6. Battery Power 1.Battery Voltage 2.Charging Current 3.Charging Capacity 4. Battery output and input status Charging Interface DC input port Type - C input port DC input port & Type-C port Type-c input port Dual input port, AC input port and Micro USB input port Type-c input port QC Fast Charging no data ✓ ✓ ✓ no data no data Charging current Max 2A×2 (CH1&CH4)slot,1A×4/0.5A×4 slot Max 3Ax1 slot,2Ax2 / 1Ax4 / 0.5Ax8 slot Max 3Ax1 slot , 2Ax2 / 1Ax4 / 1Ax8 slot Max 3Ax1slot , 2Ax2 / 1Ax4 / 0.5Ax4 slot Max 2A×2 slot, 1A×4 / 0.5A×4 slot Max 2Ax2 slot,2Ax1/1Ax2 slot 0V Activation ✓ ✓ ✓ ✓ ✓ ✓ Temperature Control ✓ ✓ ✓ ✓ ✓ ✓ Whether the current can be adjusted manually ✓ ✓ ✓ ✓ no data no data Package Contents 1x VP4 PLUS charger+1xcharging cable+1x manual+1x probes+12V 3A adapter+ 1x charer pouch 1xVC8 charger+QC3.0 adapter+1xcharging cable+1x manual 1xVC8 PLUS charger++12V 3A adapter+1xcharging cable+1x manual 1xVC4SL charger+QC3.0 adapter+1xcharging cable+1x manual 1xX4 charger+1x charging cable+1x manual 1xPB2S charger+1x charging cable+1x manual