CHF59.– CHF1.59/1Wh
Xtorm Nova Series
10000 mAh, 30 W, 37 Wh
Product ratings
Pros
Cons
5 reviews
Good but not honest!
The powerbank is really great. Small form factor, aluminium housing, 2x PD USB C and one USB A.
The information on the display is really helpful. See pictures. BUT.... The power bank can neither charge nor play back the 30W in the long term. As soon as 30W is drawn, the bank gets very warm and reduces the power down to 15W. It can supply 30W until it is used from 100% to approx. 50%. After that it drops to 20 - 15W. When charging, it goes down to 10W charging power after 60%.
For the size and price, this is still a decent performance. But if you need 30W all the time, you need a larger power bank. I am very satisfied because the PB is very small and delivers a lot of power.Pro
- Info in the display
- Quality housing
- Precise information on the display
- Small design for 10000 mAh
Contra
- Does not deliver the 30W in continuous operation
Great quality, rather heavy
This power bank is small and still has enough power. It has a very elegant surface and also fits well in a trouser pocket. It even has a USB A connection. However, it is a little heavy for 10000mAh.
Pro
- Plain
- Very good quality
- Bag
- Short USB C cable
- Display
- Noble
- Three connections
- Usb c
- Usb A
- Noble surface
Contra
- Heavy
- Bag a little too small for more cables
Pretty bad
Pro
- Display screen
- Does not heat up
Contra
- Unable to charge the battery at the same time as using an output
- Heavy
- I do not recommend buying
Once again more marketing
Firstly, if the power bank worked as promised in the marketing, it would be a hit.
As it is, it's so-so, the display is nice, the values on it seem to be correct. At least you can see plus/minus what's going on, for those who know how to interpret it. (Attention: the power levels are NOT displayed separately, as the pictures suggest, but one shows output power across all connections, the other input power, as in the photos of the previous poster)
I recommend everyone (at their own risk) to fully charge and discharge the power bank once at the beginning and then charge it back to 100%, after which the percentage display is correct. Repeating this from time to time (especially after many partial charges/discharges) can certainly do no harm. Otherwise, the power bank may suddenly switch off and be empty despite a remaining capacity of 5% or 10%, or it may continue to run for a long time at 1%. (The display must be calibrated, so to speak, and as with all power banks, the display does not show its own consumption, so the longer it is used, the more the display deviates from the actual state of the battery).
It is not clear to me what kind of cells are installed in it, whether prismatic or 2x 21700. Even with the thermal imaging camera you cannot recognise the cells, the heat dissipation via the housing seems to work perfectly, it is evenly warm everywhere, without hotspots (except at the ports).
Conclusion: I will keep it, as the display is very useful (for me), simply with the background knowledge that it can only be used permanently with 15W input/output. For my application (charging smartphone, camera, headphones, watch, etc., this is completely sufficient). It also appears that the power bank can also be charged via a solar panel, but the test was not conclusive enough as it was too cloudy. The watt display is very practical for solar charging and saves the need for a separate measuring device.
My test with 5V/3A is clearly at the limit of USB-A, it is quite possible that the conversion losses are lower at 9V/12V/15V, depending on how the cells are internally connected.
SUPPLEMENT: I have disassembled one. The power bank is very cleanly constructed internally, the top finish on the outside continues on the inside. Very clean print and solder joints, 2x IMR21700-5000 round cells from Sunpower are installed. The whole thing makes a very high-quality and durable impression. According to Sunpower, the cells can also withstand higher temperatures under tougher conditions, which means that my 50°C mentioned above is no problem for the cells. The service life is stated as >=600 cycles. There are also exemplary thermal pads installed.Pro
- stable
- beautiful display
- 2 USB-C combination inputs/outputs
- 1 USB-A
- Despite the high internal temperature, the power bank is not hot to the touch, just very warm
- Can be charged with many USB chargers, even an old 5V/1A works
- Percentage display on discharge linear
- can be used as a hand warmer when charging (meant rather sarcastically)
- Efficiency of 74% (5398mAh@5V/3A)
Contra
- will easily reach 50°C according to the display at Tu 22°C
- throttles down to 15W after a short time when charging due to heat development
- the negotiation of USB-PD values does not appear to be fully developed
- heavy
- Display contents not as in the brochure
- Why do my two tested models already have 55 and 42Wh on the meter?
- No passthrough (in any combination)
- Charging time over 2h
Technological
Tested with the following chargers:
*Oppo 65W (Find XPro)
*Lenovo 100W (Yoga Laptop)
... Not optimal with Mediocren Apple chargers, as not even the supplied charging cables are suitable for fast charging.Pro
- 30W Recharge (90min.)
- Fits well in the hand
- Good workmanship
- Storage hives included
- Charging cable incl.
Contra
- None
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