Review by trail runner Emerson Yang, UTMB finishers, HK100 finishers, trail running gear geek
Received my new gear NB10000 yesterday. Let’s check it out.
Some explanation about capacity:
The capacity: 10000mAh 3.85V (38.5Wh), It means the battery capacity is 10000mAh, which is 10Ah. The voltage of the battery is 3.85V, so it is 38.5Wh. In fact, Wh (watt-hour) is the unit that truly identifies the battery capacity. Just like the 2000mAh 18650 battery can store much more electricity than the 2000mAh AA NI-MH battery.
Rated capacity: 6400mAh 5V (TYP 1A) means that under the standard output of 5V 1A, it can output 6400mAh of electricity. Some people may ask: Isn’t it 10000mAh?
Actually, it depends on the voltage. 6400mAh multiplied by 5V is 32Wh.
The nominal capacity is 38.5Wh, the rated output capacity is 32Wh, so the output conversion efficiency is 83.11%.
In addition, the A and C ports support several kinds of voltage and current combinations during input and output, with a maximum of 18W. If your powered device does not support these combinations, then there are at least two standard combinations of 5V1A and 5V2A available.
I did some tests to verify capacity and conversion efficiency.
Power bank: NB10000
Tester: FL001 Super
Cable: Anker USB A to L MFI cable, Ravpower USB C to L MFI cable, ZMI C to C cable
Adapter: Letv EV-24ACN 24W PD Adapter, LENOVO Thinkplus PA65 65W red Adapter
It should be noted that the actual efficiency is slightly higher than the test efficiency. The power consumption increased because of the tester and the second charging line.
Test 1-Full charge
Discharge the NB10000 then fully charge it with Letv and Lenovo adapter.
Using Letv adapter:
voltage 8.99V, current 1.98A, charging wattage 17.84W, input energy 45.839Wh.
Using Lenovo adapter:
voltage 8.9V, current 1.98A, charging wattage 17.69W, input energy 45.391Wh.
Both tests input energy about 45Wh. Compared with the nominal capacity of 38.5Wh, the charging efficiency is about 85.55%.
Test 2- Complete discharge
Use NB10000 to charge the iPad Pro. In order to prevent the iPad from being fully charged and causing the test to be interrupted, I opened a play video to consume power. (Note: iPad Pro 9.7 only supports input up to 5V 2A)
Use USB-A port to supply power, the tester is connected to Anker USB A to L MFI cable to charge iPad Pro
Use USB-C port to supply power, the tester is connected to Ravpower USB C to L MFI cable to charge iPad Pro
Both tests output energy more than 35Wh, exceeding the rated energy, the measured conversion efficiency is about 92%.
Test 3- Quick charge
Use NB10000 and ZMI C to C Cable to charge Nut Pro2S mobile phone.
voltage 8.99V, current 1.89A, charging wattage 17W
Test 4-Low current mode
Use NB10000 to charge Garmin 935
voltage 5.08V, current 0.22A, charging wattage 1.15W, suitable for charging low current devices
Test 5- Low temperature
The official website introduces that NB10000 can work at a low temperature of –10 ° C. Let’s challenge it and put it in the freezer at –20 ° C for a night, and then do the discharge test.
I put the NB10000 and the thermometer in the refrigerator to freeze overnight. As we can see, there is a layer of frost on the power bank. The indication of the thermometer was below –20 ℃, but when I started the test, the pointer reached –16 ° C due to high room temperature.
Connect the NB10000 and the iPad Pro, then put the power bank back into the freezing refrigerator and continue testing.
The measured output energy is 26.71Wh, about 83.47% of the rated energy. No need to worry when using it in an outdoor low-temperature environment.
Test 6-Waterproof performance
The official website introduces that the NB10000 is rating IPX5, which means it can eliminate the harmful effects of the jet water from all directions. Generally speaking, it can prevent torrential rain.
Let’s challenge it. Immerse the NB10000 in the water.
Put the NB10000 in a plastic box and pour water until it is submerged. When shooting this gif photo, I poured water back and forth 5-6 times. The NB10000 still work properly, the measured protection level is much higher than the nominal rating.
It is not recommended to be used in the water, but at least it is no need to worry about using it in rainy environment.
1. The measured charge and discharge speed can basically reach the nominal 18W. The actual charging speed is subject to the charging strategy of the device. For example, after you turn on the “Optimized Battery Charging” option on iPhone, the trickle mode will be turned on when the battery is nearly 80% charged.
2. The measured output energy is 35.16Wh, exceeding the rated energy of 32Wh. The official data is conservative, maybe they reserve it for future battery cell losses.
3. Low temperature and waterproof performance have exceeded the nominal level, you can feel free to use it in an outdoor environment and trail running.