Theodore Voltaire said:
I think I'll make an effort to take better care of this new battery. It may have to last a long time. I was reading that because of this pandemic that globalization is dead, and China isn't going to be the worlds factory any longer. It will take a number of years for local production to get going, and a lot of our resources may go into food production. Anyone that needs a new battery, this is probably a good time to get one.
For anyone reading this and thinking "oh dang, I better hurry up and get muh Chinese battery on order...." Stop. If you are reading this it's likely that your bike requires at least 72v 80 amp output battery which requires different design diligence, than say a 48v 20 amp battery. First and foremost, this is not an indictment of anyones (TV),purchase choices. Full disclosure, I made the $2,000 China battery mistake (8 months ago) and I'll never do that again. The voltage sag, uneven cell group heating and high rate of capacity loss, over time made me sick.
But here are other options....You could always build the battery yourself. You'll get a better product, it'll cost less and more importantly... you'll learn something (teach a man to fish). Regardless, I have yet to see a 72v battery out of China where corners weren't cut to include at least one of the following:
-Less than adequate serial connections for advertised max output.
-Unverified cell capacity and C rate. Fake cells are rampant and nobody at these battery mills bothers to cap test.
-Poor spot weld placement on cathode center.
-Luck of the draw "dumb" BMS systems that are un-monitorable, when there is a plethora of newer, Bluetooth options available.
-Unverified use of fake nickel stripping. Is there a cheaper testing solution that salt water?
-Inadequate sizing of main battery leads based on advertised output.
If you do not want jump in a learn a new skill (which is fine), there are plenty of good builders represented on all continents, who currently post in this thread. Litespeed, Alex and Cowardly Duck to name a few. If it were me, and I wasn't going to build one I'd try to support a local guy where I have some say in the battery build. Not to mention the customer service from Chinese suppliers pretty much ends once your credit card authorization is obtained.