Hey guys,
Im looking for decent power bank suggestions for devices, ie. flashlights,speakers,phones and so on...
If any knowledgeable on good brands or sizes that should get please let me know here.
i use my dewalt li ion cells, and usb adapter like this
These adapters are very useful but only if you have a lot of batteries and they aren't very expensive to buy. A USB adapter that fits my porter cable and black & decker 20v batteries now goes for about $50 and for that price you could buy a few stand alone power banks that are more compact and have better output support. The usb one I got for cheap at a flea market only does a combined 1A USB output while they have power banks with 2A or more output available which makes charging devices a lot quicker.
My phone supports fast charging which means it has the option of charging (with compatible charger) at 9v 2A and even 12V 1.5A and compare that to 5V 2A you have 10 vs 18watts of power. I've found some name brand cables aren't good enough (wiring) to support fast charging tech but what I find is funny is I've tried cables from Dollar Tree and ALL of them work... even the M/F extension cables with one of their cables works too... go figure. A decent USB cable can handle 2.1A but not all cables are able to handle it.i paid 20 bucks for such adapter, however mine isn't dewalt, but made by a third party, other than lack of dewalt logo, mine is identical, i use it for about 6 mo, so far no complaints, i do have plenty of batteries, right now i have 6. half are 5ah, other half 3ah , but i agree if you do not already have power tool batteries it does not pay to buy just for that.
i never measured what usb can supply, but from charging phone and i pod, it seems like 1A rating maybe be correct, it takes same time to charge as with provided apple ac adapter.
i'm not sure, many usb cables are capable of 2A, those usb cables i cut up had thin wires, at 2a there would be a lot of resistance.
There are some decent quality brands of power banks but it does depend on how much peformance you need from one.how trustworthy are those ratings? we have plenty of garbage 18650 that claim 4000-5000mah.
is there a reputable brand for those, that can be trusted?? most of power banks i have, have no name on them, no one knows who made them and what cells they used.
i never measured what usb can supply, but from charging phone and i pod, it seems like 1A rating maybe be correct, it takes same time to charge as with provided apple ac adapter.
Newer Apple devices [iPhone 8 and later, iPad Pro series] will charge via USB-C which allows for significantly faster 18W charging.
i have i phone xr, it does not have usb c, it has regular apple connection. but i rarely use it to charge, only to transfer files, i use wireless pad, it charges up pretty quick, no slower than with a wire
Phones that support adaptive fast charging and qualcomm's quick charging can charge at 12v input up to 18watts for QC 2/3 and QC4 can support voltages up to 20v and 100watts. My phone supports QC2 and 18 watts charging almost twice as fast as 5v 2A charging rate.Current USB standards [using a "USB Micro"/standard USB-A port] will allow up to 3A; in real-world use, I don't see any of my Apple devices charge faster than ~2.5. Snapdragon-equipped Android phones can hit 3A. Cables are only supposed to be rated to 2A, so you need a quality cable that's actually built better than the standard to get this faster charging (I recommend Anker Powerline series.) Manufacturers almost always bundle an inexpensive slower charger with their devices, so you'll also need a better charger than what came in the box (when buying a charger or hub, look for the amp rating for each outlet - if it just says "3A" but has two outlets, that means it can only charge two devices simultaneously at 1.5A.)
Newer Apple devices [iPhone 8 and later, iPad Pro series] will charge via USB-C which allows for significantly faster 18W charging.