Recent content by the_uglydog

Hi, we have a Growatt 8kw grid tie inverter. It has been working fine for a few years now, other than a few ISO faults on the panel strings which are repaired. It has recently started going into standby for no apparent reason. No faults show, all strings are within 10 volts of each other and...

There is no isolation between the cells, only on the bottom and sides of the case, there aren't any breaks in the plastic case of the cells. I think everything was caused by loose connections. This was made by an actual manufacturer in Guangzhou. I couldn't find them at the address listed when I...

In the one pictured above I didn't catch the problem till it was too late, the one pictured here I caught in time, you can see the evidence of the heat on the busbars. I bought 6 200ah batteries from them. My wife wanted to save $300 each so we went with these. I noticed, after the first one...

Turli Batteries. 6 200ah batteries, 5 months old. One reaches rated capacity. This one stopped working, see for yourself.

I think french fries are better! That battery with all the bad cells is disassembled and even if I tried it won't fit back in the case. I'm not going to take any replacement cells from that company, what I think I'll do is buy some new Eve cells and rebuild it myself. All of the other batteries...

I found out something new today as well. The cells are not Grade A as they are supposed to be, the QR code under the top insulation is missing and the BMS has a new barcode stuck over the old one.

I think all of the reviews they had were fake! They are still in business but they have been removed from Alibaba. I'm going to be in Guangzhou next week, I was thinking of paying them a visit.

I was thinking the same thing, but I wanted some other opinions as well. I'm trying to at least get 2 new BMS and maybe some new cells, although I'm not sure I want to put in anything from them. My regular supplier can get a good price on cells for me so I may just replace the cells in 2...

Guangzhou Tianyu Communication Equipment Co AKA. Turli. These were supposed to be all brand new cells rated at 200ah. One of 6 is 200ah. The others are 179ah, 167ah, 120ah,120ah, 114 ah and one 0ah. So far they are saying I overcharged them since one cell is showing 3.8v. My system is set for a...

I'm not actually sure about that, when I opened the first one everything looked so bad I just wanted to disconnect it and shut down the entire system. I wasn't paying attention but it does seem that I thought it all was loose. I noticed on the second battery that had problems that the cells that...

The blue wrap is fine, the only signs of arcs are on the tops of the batteries, especially the corner in the first picture where the top looks burned. I'm thinking these aren't the new grade A cells they are supposed to be but maybe used and unmatched junk. Some of the other batteries reach full...

Hi, I've been having issues with some server rack batteries I bought, 200ah 48v. One of them was working Ok, then all of a sudden it started showing wildly mismatched cells and shut down. BMS is fried. I opened it and tried to disassemble but many of the cells were swollen and showed signs of...

Here's a question! I'm building a system to run the well and pressure pumps for one of our apartment buildings. The well pump is 3hp and the pressure pump is 1hp. The well pump runs mostly from 5AM till 11AM, sporadically during the day, then from 4PM till 10PM. The pressure pump runs from about...

We are in The Philippines. So the weather is hot and very humid most of the year. We used all galvanized heavy tubing with only angle bar that's painted for braces and the actual mounts plus the adjusters. We got some cheap galv. tubes and they rusted in 3 years so we have to paint them, the...

I have 6 of these in parallel on one inverter. This one I completely disconnected and have let it stand shut off for a day. When they are connected they pre-charge the inverter slowly, no big inrush of power. They all will turn on when the switch and breaker are on and there is power available...