Posts: 4
Threads: 1
Joined: Sep 2020
Posts: 4
Threads: 1
Joined: Sep 2020
Power bank #1: Charmast 26800mAh Powerbank External battery Power Delivery QC 3.0 Quick Charge USB C Micro USB
<https://www.amazon.de/gp/product/B073FJ6Z8D/ref=ppx_yo_dt_b_asin_title_o01_s01?ie=UTF8&psc=1>
Power bank #2: AXNEB Wireless Powerbank 25W PD3.0+QC4.0, 15W Wireless Charger 26,800mAh Powerbank 4 Outputs USB C External, with LCD Display
<https://www.amazon.de/gp/product/B09MT2ZXWG/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&psc=1>
Power bank #3: QTshine Power Bank 26800mAh,PD 3.0 18W Quick Charge QC 3.0 Power Delivery 3-Ausgang & 2-Eingang Type-C
<https://www.amazon.de/gp/product/B08F3FS8WB/ref=ppx_yo_dt_b_asin_title_o01_s01?ie=UTF8&th=1>
In addition: Power supply with two QC-USB-A ports:
CSL - 36W power supply 2 Port Quick Charge 3.0 - USB 6000 mA
<https://www.amazon.de/gp/product/B07S64242D/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&th=1>
Configurations: Powerbank (USB-A or USB-C QC-port) plus Ruideng USB meter plus QCCP-Stick (Hans Vollmer) plus EP-5B battery adapter (Made in China) in camera. Power banks fully charged. Tested with 1 sec exposure, 2 min intervall recording (to generate idle time).
With my Nikon D750 (which is known for its high power consumption), I had no success with either power bank. For comparison, the D750 worked with the CSL-36W power supply.
The results with the other cameras (Nikon D600, Z6) were similar concerning power bank performance:
Power bank #1 (Charmast) did not work with any of these cameras.
Power bank #2 (AXNEB Wireless Powerbank) and power bank #3 (QTshine Power Bank) performed almost identical on their USB-A QC and USB-C ports. They worked with the D600 and Z6. Their port (front) panels looks very similar, and I think their interior is based on almost the same components. Both #2 and #3 allowed only one QCCP-stick on their QC ports, and even addition of minor power consuming components (e.g., 5 V 0.1 A) to other ports caused QC voltage breakdown, even following Hans Vollmer's recommendation from a recent thread ("Connect the QCCP-Stick to the USB-C port via a USB-OTG adapter and the lens heater to a USB-A port"). The USB-A to USB-C OTG adapter I used was quite short on the USB-C side, and the resulting contact wasn't very reliable.
Based on this results, I cannot recommend any of these power banks for use with the Nikon D750. For the D600 and the Z6, power bank #2 (AXNEB Wireless Powerbank) and, in third place, power bank #3 (QTshine Power Bank) may be a cheap option.
Is there any power bank up to about 27000 mAh which can be used reliably with the Nikon D750? The Helpers Lab 20,000mAh Powerbank with dual USB-C PD from Hans Vollmer's comparison does not seem to be available anymore.
Günter