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ZENDURE A8PD 26,800mAh USB-C 30W PD Power Banks
I’m giving it 4 Stars.
Overall, this is a fine power bank. I use it primarily as a backup battery for my 2016 MacBook Pro. And it works great for that. Even when the Mac is low on power the bank can keep up with it, supplying power for use and trickle charging the internal battery at the same time.
Now for the annoying points. When in use, and the whole time the bank is recharging, the % display is brightly lit (draining) or flashing (charging). And the light does not go out the whole time. If you are recharging this overnight in a dark room, the flashing display can light up the whole room and be quite annoying if you are trying to sleep.
Secondly, the Type-C port can be finicky about the power adapter you use to recharge it (and I haven’t yet figured out why. I’m sure it’s a wattage issue). I have a couple of Type-C Adapter bricks, including a new high wattage Anker, and the Zendure doesn’t always start recharging when connected. I’ve got to fiddle with everything to get it to start charging. Now if I use the C port on my Apple Mac Adapter it works fine. So I’ll have to test things with my Type-C meter and see what the difference is.
Is an true issue then i hope they will address it in the next revision ... maybe with an switch for the type-c tat will be between sending and receiving power.
You have reminded me that on newer Zendure power banks clicking & holding the power banks' power button will switch the direction that the C-Port works in. I'll have to try that later when I get home with this model and see if that is the issue.
Holding down the button to change PD direction of power transfer works on mine. In the parlance of the USB PD specifications, most recent Mac laptops are "Dual Role Power" mode on all ports, but may end up in either "UFP"/"Consumer" or "DFP"/"Provider" mode if the connected device (such as this power pack) is also Dual Role. By holding down the button on the Zendure, it's probably triggering a renegotiation of the roles such that the laptop is forced to enter the opposite role. Unfortunately, I have yet to see a way to trigger this change in role on the macOS side. Testing this A8PD on a Macbook from 2017 (one USB C PD port), the default behavior is for the A8PD to be Producer, and the Mac Consumer. Holding down the button for 4-5 seconds flips it and the Mac then charges the power pack instead. Holding it down again toggles back to the Mac being charged by the power pack.
Thanks! That was helpful.
I have had instances where it seems that “nagotiation” doesn’t go as expected and the device refuses to recharge, or stops recharging after a period of time, when using different power bricks - Anker and Aukey specifically. They are 30w and 45w brinks so should not pose a problem. Yet, on occasion the Zendure stops or refuses to recharge.
I have since upgraded to Ankers new 100w power brick and have not experienced that issue again. Nevertheless, it seems the Zendure power bank can be picky about what adapters it will receive power from.