You can ADD a USB micro right next to the USB mini port, see that small empty spot to the right of the Mini port (just above the U1 silk screen letters), that is a location for a USB Micro connector (J5) [well that and a diode (D3) to prevent power feedback]
The only problem…that USB micro only has one set of holder feet, which is the primary reason the XTAR MC1 is so fragile, one good tug and it just pulls it right off the PCB…I just LOVE the TP4056 charge controller too, very good chips
The TP4056 is capable of pushing 1A charge, only thing that needs to be changed is the resistor level (R2) right below the USB mini connector, I just wish it had a slider type holder like the XTAR MC1
Pretty cool, everything left of the double white vertical stripe is for “charging” everything to the right of it is for the boost from 4.2V up to 5vdc for output…really neat design
HKJ did a review on those modules, a 1A due to the thermal control in the chip at 1A it “fluctuates” maybe a little heatsink or something on that chip might help, he said at 500mA charge rate it was very solid
So the review from above is the review for the “charge” pattern on the Miller
M3tek MT5032A boost converter for the 5v usb output. Datasheet. Claims to be capable of 2.1A. Can’t know without testing tho. The usb output does not have any charger coding resistors populated (but pads are there to add them) so apple devices will likely charge slower just due to that.
The chip claims to be to be capable of 2.1A. M3tek is a chinese company, really can’t assume 2.1A is the truth.
The chinese tp4056 li-ion charger chip (used in one ML-102 version) claims 1A. In reality its 850mA.