Any way to manually charge battery?

I've taken apart the speaker and got to the battery. I had the classic orange light flashing but won't turn on. Tried everything. All the updates etc but no luck. Theres 0v being fed in when charging so assume the chip is telling the battery not to charge.

I can pay £15 for a new battery off Ali express or I can try and manually charge it. I wondered if anyone had any experience of doing this/is it a bad idea?

Here's the battery inside ATM