INIU Power Banks: Performance, Specifications, and Comparisons
This document provides a comprehensive overview of INIU's portable power bank offerings, detailing their specifications, charging performance, energy efficiency, and thermal characteristics. It also includes comparative data against other leading brands.
Understanding Energy Units
Power banks store and deliver electrical energy. Key units used to measure this are:
- Watt-hour (Wh): A measure of energy, calculated by multiplying power (Watts) by time (hours). It represents the total energy capacity or consumption.
- Milliampere-hour (mAh): A measure of electric charge. While commonly used for battery capacity, it's voltage-dependent.
- Kilowatt-hour (kWh): Equal to 1000 Watt-hours, often used for electricity billing.
The relationship is approximately: Watt-hour (Wh) = (mAh / 1000) * Volts. For example, a 10000 mAh battery with a nominal voltage of 3.70V holds approximately 37 Wh (10000 mAh / 1000 * 3.70V). Note that voltage can fluctuate, making this an approximate value.
INIU PowerPaw Slim 10000mAh Power Bank BI-B41
Basic Specifications
- Capacity: 10,000 mAh
- Features: Flashlight LED
- Output: 5V only device
- Ports: 1 USB C, 2 USB A
- Operation: Stays on in low power mode
- Functionality: Pass through charging; not a UPS (Uninterruptible Power Supply)
Energy Performance
| Metric | Value |
|---|---|
| Input Energy for Full Charge | 49 Wh |
| Output Energy for Full Discharge | 30.3 Wh |
| Efficiency of Discharge (Higher is better) | 81.9% |
| Efficiency (Wall Socket to Delivered Energy) | 61.8% |
Charge/Time Performance
Charge Rate: 15W
Time to Full Charge: Approximately 80% in 2.5 hours.
Measured Watt Hours: 49.044 Wh
Thermal Performance
Charging @ 15W: Surface temperatures ranged from 24.1°C to 31.7°C on one side and 27.6°C to 30.4°C on another, with a peak of 31.7°C.
Discharging @ 15W: Surface temperatures ranged from 23.1°C to 32.2°C on one side and 32.2°C to 38.8°C on another, with a peak of 38.8°C.
INIU 15000 mAh Power Bank BI-B62 45W
Basic Specifications
- Capacity: 15,000 mAh
- Features: Flashlight LED
- PD Device Support: 5V, 9V, 12V, 15V, 20V
- PPS Support: 20V PPS, 2.7A limit
- Ports: 1 USB C, 1 USB A
- Operation: Stays on in low power mode
- Functionality: Pass through charging; Works as a UPS (5V)
Energy Performance
| Metric | Value |
|---|---|
| Input Energy for Full Charge | 65.3 Wh |
| Output Energy for Full Discharge | 48 Wh at 25W, 47.2 Wh at 45W |
| Efficiency of Discharge (Higher is better) | 86.5% |
| Efficiency (Wall Socket to Delivered Energy) | 73.5% |
Charge/Time Performance
Charge Rate: 30W
Time to Full Charge: Approximately 90% in 1 hour 45 minutes.
Measured Watt Hours: 65.284 Wh
Thermal Performance
Charging @ 30W: Surface temperatures ranged from 27.3°C to 39.5°C on one side and 35.3°C to 40.3°C on another, with a peak of 40.3°C.
Discharging @ 45W: Surface temperatures ranged from 25.8°C to 45.1°C on one side and 42.7°C to 48.9°C on another, with a peak of 48.9°C.
INIU PD 22.5 20000mAh BI-B5 Power Bank
Basic Specifications
- Capacity: 20,000 mAh
- Features: Flashlight LED
- PD Device Support: 5V, 9V, 12V
- Ports: 1 USB C, 2 USB A
- Operation: Stays on in low power mode
- Functionality: Pass through charging; not a UPS
Energy Performance
| Metric | Value |
|---|---|
| Input Energy for Full Charge | 98 Wh |
| Output Energy for Full Discharge | 63.3 Wh |
| Efficiency of Discharge (Higher is better) | 85.5% |
| Efficiency (Wall Socket to Delivered Energy) | 64.6% |
Charge/Time Performance
Charge Rate: 18W
Time to Full Charge: Approximately 4 hours to 80%.
Measured Watt Hours: 98.015 Wh
Thermal Performance
Charging @ 18W: Surface temperatures ranged from 24.2°C to 35.1°C on one side and 34.0°C to 34.1°C on another, with a peak of 35.1°C.
Discharging @ 20W: Surface temperatures ranged from 19.9°C to 37.7°C on one side and 33.4°C to 38.6°C on another, with a peak of 38.6°C.
INIU PD 65W 25000mAh Power Bank BI-B63
Basic Specifications
- Capacity: 25,000 mAh
- PD Device Support: 5V, 9V, 12V, 15V, 20V
- PPS Support: 11, 20V PPS – 3A limit
- Ports: 2 USB C, 1 USB A
- Operation: Stays on in low power mode
- Functionality: Pass through charging; Works as UPS (with PD)
Energy Performance
| Metric | Value |
|---|---|
| Input Energy for Full Charge | 102.6 Wh |
| Output Energy for Full Discharge | 81.4 Wh at 25W, 82.7 Wh at 65W |
| Efficiency of Discharge (Higher is better) | 88% |
| Efficiency (Wall Socket to Delivered Energy) | 79.3% |
Charge/Time Performance
Charge Rate: 45W
Time to Full Charge: Approximately 1 hour 53 minutes to 90%.
Measured Watt Hours: 102.58 Wh
Thermal Performance
Charging @ 45W: Surface temperatures ranged from 29.3°C to 31.0°C on one side and 30.8°C to 32.3°C on another, with a peak of 32.3°C.
Discharging @ 65W: Surface temperatures ranged from 25.1°C to 36.3°C on one side and 32.0°C to 37.9°C on another, with a peak of 37.9°C.
Comparative Analysis
The following tables compare INIU power banks against other popular models based on various performance metrics.
Comparison: Energy Input, Output, and Efficiency
| Device | Input Energy for Full Charge (Wh) | Maximum Power In (Watts) | Maximum Power Out (Watts) | Output Energy for Full Discharge (Wh) | Efficiency of Discharge (%) | Efficiency (Wall Socket to Delivered Energy) (%) |
|---|---|---|---|---|---|---|
| Iniu PowerPaw Slim 10000mAh Power Bank BI-B41 | 49 | 15 | 15 | 30.3 | 81.9 | 61.8 |
| Anker 313 Power Bank (PowerCore Slim 10K) 10000mAh | 49.9 | 10 | 12 | 27 | 73 | 54.1 |
| Nitecore NB10000 Gen II (Gen 2) Ultra-Slim | 48.3 | 18 | 18 | 29.2 | 75.9 | 60.5 |
| Anker 325 Power Bank (PowerCore Essential 20K) 20000mAh | 105.4 | 14 | 15 | 68.5 | 95.1 | 65 |
| Iniu 15000 mAh Power Bank BI-B62 45W | 65.3 | 30 | 45 | 48 | 86.5 | 73.5 |
| Evatronic ET-PB005 | 79 | 30 | 60 | 58.2 | 80.8 | 73.6 |
| Zmi PowerPack No. 20, QB826G 25000 mAh PD Max 100W Single Port | 97 | 80 | 100 | 78.1 | 86.1 | 80.5 |
| Iniu PD 22.5 20000mAh BI-B5 Power Bank | 98 | 20 | 20 | 63.3 | 85.5 | 64.6 |
| Iniu PD 65W 25000mAh Power Bank BI-B63 | 102.6 | 45 | 65 | 81.4 | 88 | 79.3 |
Comparison: Cost, Value, Density, and Power Density
| Device | Cost (USD, 2024) | Capacity Usable (Wh) | Value, Wh/$ (Higher is better) | Energy Density (Wh/kg) / (Wh/liter) | Power Density (W/kg) |
|---|---|---|---|---|---|
| Iniu PowerPaw Slim 10000mAh Power Bank BI-B41 | 20 | 30.3 | 1.52 | 152 Wh/kg 217 Wh/l | 75 |
| Iniu 15000 mAh Power Bank BI-B62 45W | 40 | 48.0 | 1.20 | 148 Wh/kg 195 Wh/l | 138 |
| Iniu PD 22.5 20000mAh BI-B5 Power Bank | 30 | 63.3 | 2.11 | 181 Wh/kg 248 Wh/l | 57 |
| Iniu PD 65W 25000mAh Power Bank BI-B63 | 67 | 81.4 | 1.21 | 167 Wh/kg 216 Wh/l | 134 |
| Anker 313 Power Bank (PowerCore Slim 10K) 10000mAh | 22 | 27.0 | 1.23 | 115 Wh/kg 154 Wh/l | 51 |
| Anker 325 Power Bank (PowerCore Essential 20K) 20000mAh | 43 | 68.5 | 1.59 | 202 Wh/kg 289 Wh/l | 44 |
| Evatronic ET-PB005 | 54 | 58.2 | 1.08 | 161 Wh/kg 218 Wh/l | 166 |
| Zmi PowerPack No. 20, QB826G Worldwide Ed. 25000 mAh PD Max 100W Single Port | 159 | 78.1 | 0.49 | 134 Wh/kg 184 Wh/l | 171 |
