2023-02-15: Just received a couple Znter 'C' Rechargeable Lipo Batteries... Of course, the first step is to tear them apart to see what is inside them. These batteries have a USB-C Charging port on the positive end of the battery. I'm not going to test the battery claims here, but these batteries sound nice: 3 Hour Fast Charge, 1.5V Full Range Constant Voltage (meaning you won't know when the battery is about to go dead until it does), 1500 Cycles, 7500mwh/5000mAh.

I will say the packaging looks professional enough. No security tags and easy enough to open.

Nice and easy sticker removal. It peels right off with a tug leaving behind a nice metal case. Looks like the positive terminal secures the plastic cap on.

Oops. I'm pretty sure that wasn't quite the right way to remove this [ie using a pliers and twisting it around while pulling] - There doesn't seem to be any damage though and it pulled smoothly out of the solder on the circuit board...so maybe this was the right way?

Of course, I have to show the plastic cover just to make you a little more impatient about seeing the inside of the battery... I wonder what melted the plastic?

Here it is... The main circuit board... There are two LEDs, one red and the other green on the right. U1 is labeled K6CTM (SOT23-6 Package); U2 is labeled 520A4P; U3 is labeled 5606AJ OL (1-Cell Lithium-ion Battery Protection IC, SOT23-5 Package). And yes the inductor does have a corner broken off of it...and no - I didn't do that.

And a top down view of the circuit board. Looks fairly simple.

And removal of the brass ring holding the circuit board in place. This ring is the negative terminal of the battery. It was simply pressed in place - a little prying with a screwdriver and it slid out. Hmm... ever wonder how much trouble you could get into using a small sharp metal screwdriver to pry a brass ring away from a live circuit board?

And the whole battery slides out of its case... Just turn it upside down! Lithium cell is marked "LBL 24400 2100mAh 3.7V 7.77Wh 20220106". USB-C Circuit board marked with part number "YC264V3-B"

and one more photo... bottom of the circuit board. The USB-C pins aren't actually soldered to the circuit board. You'll be using dumb chargers to charge these batteries. There also appears to be a part number of "YC264V1.0" Now, all I have to do is find a weird project to use this dissected battery on... and yes, my wife has already caught me walking around the house holding this battery and picking up random battery hogging toys and contemplating them... wouldn't it be nice if EVERY toy had a USB-C port on the side? - you just plug it in when the battery goes dead! No more paying for expensive batteries and hearing children complain they need more batteries! Ahh! Such pleasant day-dreams!


Psalm 69:14