(not sure if something like this has been reviewed before)
it's labeled "smart USB charger" appears to convert DC12-36v into 4-ports USB voltage (supports QC2/3) and also displays the current being supplied (like a USB meter).
Hi HKJ,
I’d like a slim, small capacity powerbank, around 3-4000 mAh or so. I’m considering building recycling a smartphone lipo, but I’m also having a look to ready options… these two for example could be interesting, in case you are interested in reviewing them:
Hmm, just my opinion, regarding the low-cost small-capacity powerbanks,
I think there are too many such kinds it may not be possible to do that much “stringent” testing on them — low-cost unbranded items tend to not have that much quality control and while one batch may perform better, the next batch may easily change… at least based on my experience of them. Just my 2 cents worth…
Actually, I have something that looks practically the same as your second link (the one here: https://www.gearbest.com/power-banks/pp_436972.html), someone passed it on to me (my relative got it as a “giveaway” souvenir from some club event).
The Tomo Epilot E4 is available from Gearbest (black is a few cents cheaper than white); maybe there’s a generic coupon code somewhere to bring down the price…
While searching for the Tomo powerbanks, I came across other models too:
Tomo D2 (2x 26650) powerbank/charger: https://www.gearbest.com/chargers/pp_1524290.html
(specs list the input current @ 1A ; it will take a long time to fully charge 2x 5000+ mAh 26650 with this powerbank…)
but YZX meter did not have ,
For UM34C, it support USB 3.0 and Quick charge recognition mode:QC2.0、QC3.0、APPLE 2.4A/2.1A/ 1A/0.5A、Android DCP、SAMSUNG, support support OPPO phone VOOC, OnePlus DASH
Though UM34C and UM25C have Type-c port , but there is not trigger, only support type-c charge, not recognition
although for data or some function, it is not better than YZX meter, but for the price , it is already best …
for USB load, there are many choice , LD25/LD35
If someone need more cheaper meter, but colorful display, there is also choice AT34