Chosen Solution
I’d like to get rid of the battery in my 4S and run directly off of the wall charger. I use the phone as a wireless IP camera and it does a great job, but I’ve gone through three batteries exploding on me already. It is my old work phone, which I’m allowed to keep and use, but not sell (legal issues). Is there a way to get the phone to THINK there is a battery installed, let it boot, and have wifi work - without installing yet another battery? I’ve read some posts with “bypass instructions” but those were for broken pad connectors - and though I have soldering experience, I would still like some hand holding for specific details/points if possible.
I don’t think it is possible to trick the logic board into thinking there is a battery attached. The 4 pins are VCC, GND(which are just fancy words for + and -), battery data bus and a NTC thermal probe. Charging and using both goes to VCC and GND, NTC can be tricked using a resistor, but the battery has a chip that reports battery status to the logic board. If the logic board does not detect the chip or the chip is reporting bad battery data(which is always going to happen if you decide to connect the chip only, without the battery cell), the phone immediately trips off and refuse to boot. So just go with the battery connected. If all your devices pop, there must be something other than prolonged charging that has been causing the batteries to pop, for example overheating.
The easiest and safest way to permanently plug your iPhone into an outlet is to plug your iPhone into a " mechanical outlet timer" and set the timer to only be on for 2 hours a day, as that will fully charge most iPhone models. Adjust timers “on” time as necessary, models are available that will go on two or more times, for batteries that are totally junk. They cost $5-$10 at any electronics store. For an iPhone battery to stay health it needs to drain and charge often. This will accomplish that. Cheers.