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Could the 3.7 watt LiPo battery trigger the charging symbol on an iPhone?



Could the 3.7 watt LiPo battery trigger the charging symbol on an iPhone?

I’m trying to use a 3 Volt 1 Amp lithium battery (so it’s 3.7 Watts) to charge or at least trigger the charging symbol on an iPhone 5. I fully charged the battery using the lithium polymer charger. I am going to connect the black and red wires to the battery with the black and red wires inside a lightning cable. Then, I’ll plug this lightning cable into the phone. I don’t care how fast or how long it takes to charge the phone. I just want to know if it will at least activate the charging battery symbol on the iPhone. From what I’ve heard, 2.5 Watts at 5 Watts with 1 Amp is enough to charge an iPhone 5, but I can’t find anywhere if the iPhone detects this charging. I know of my USB port in my old 2006 PC which only gives 2.5 volts which it can trigger, so I believe a newer battery can easily do that. Any help is appreciated.

It won’t work. IPhone phones use USB and require 5 volts. They have a margin of error and I have measured up to 4.6 volts which are recognized, but 3.7 is too low.