Battery problem on Moto G7 Power after replacement

[Jonzjob]

I have had my G7 for a few years now and the battery life was getting shorter so I replaced the battery. Apart form the idea that Motorola seem to be fans of glueing things together (the back in this case) it waas simple enough. I went through the battery conditioning routine of fulcharge/discharge several times to get the full battery capacity and then just started to use it normally.

I noticed that it wasn't charging to 100%, just 96 or so but not to the full100%. I have always used the Turbo charger that came with it and thought that there may be a problem. So I plugged it in to one of of mains wall socket USB charge points, but that was the same. Next I tried it plugged into our iMac USB, same, it refused to charge to 100%.

I gave up and thought that high 90s would be OK. But then I noticed that the charge was dropping VERY steeply to the low 80s in about an hour! It indicated that the battery would only last 7 or so hours, but then it leveled out and started indicating more than a day!

Operating time seems to increase over the course of the couple of days after a charge and I am totally confused! I don't trust the phone any more and I am wondering if I'm just going to throw away money, time andd energy replacing the battery again for what seems to be a duff one. I know that LiPo batteries degrade with storage and am now wondering if it's not a better idea to replace the phone?

I also had a charging port problem and replaced that a few months back. There weren't any problems with the new port and I asked the supplier if he sold batteries. He replied that he didn't because he couldn't find a reliable supplier. Now that rings a few bells doesn't it. The problem with the originel port was that it wouldn't hold the USB connector, charger or USB/iMac link, in place properly. Nothing to do with the charging side.

Any ideas please folks?

 

[fuzzylumpkin]

Ok first things first, you don't condition a Lithium battery. That does more harm than good.

Now, where did you buy this cell? There are a few things this could be, but the most likely is that it's just a cheap and nasty battery pack..

 

[Jonzjob]

Thank you for your reply Fuzzy and for taking the time for me.

The conditioning I was advised to use waas to run it down and recharge about 3 times which is what I normally do with the batteries on my electric RC model aircraft. It's what I have done for several years now and it has always worked.

The battery for my phone was bought on ebay from what seemed a reputable seller. What ever I haven't seen such a drop as this unit is showing from what is a new battery. I have just charged it again this evening and would just wouldn't go past 92% until I switched the charger off for a minute or so and back on. It then went to 96% and just sat there telling me 4 minutes to 100%. It would have sat in that state all night if I had left it.

In fact another seller didn't sell batteries because he couldn't find a reliable supplier. I have solved the problem now and like the rest of our computing kit I have gone Apple with a nice small iPhone SE. I don't like these new BIG phones.