I just ordered 2 of them. Make sure the battery is made in 2020. You don't want a 4 year old Lithium Ion Battery going back in. Don't bother with the sticky 3M stuff if its for yourself. You will be getting a new one in a little over a year and some change anyways.
I think I Did order from Ebay. ANd I got 2 of them that say made in 2020. Thats still almost 2 years old at this point. But at elast its not from 2016. That's almost 6 years in a few months.
I think I got 2 of them for 10 bucks!
https://www.ebay.com/ipp/123618382353?transactionId=2437794682002&_trksid=p2047675.l48352
They are back up to 12 bucks again, each, but look at the date code:
I scored!
Runtime is still not as good as when new back in 2016 when I got the phone, but its not bad. At least it will drain to 3% without dying early. But I doubt any of these are going to be FULL capacity as they are still pushing 2 years at this point.
Batteries arrived with about 32% charge.
So far, seems to be doing pretty good. I have 23 hours of Standby on Battery saver mode selected at 73%. So not all bad. Wifi is on. For $5 bucks and free shipping, I could not complain about it really.
Seems they are holding up just fine. But they have only had a 3 charge cycles so far. And out f those, none of them at more then 50% Depth of discharge so far on mine.
My sons new ZTE, did at least one charge cycle so far, and its been rebooting for over 2 hours at one point, and seems to have lasted a while with the scree being on Full brightness most of the time. And I think it still had 20% in the tank when I put it on the charger. So they do seem to be good Batteries.
OEM is going to be a Bad idea at this point as ZTE no longer really supports the phone outside of the Big carriers.
I will have to test uder hard load, but I think they have at least 3000 to use. So I scored.
Look for the newest ones you can get. That's my advice.