Graphene Batteries
Posted: 15 Oct 2020, 12:51
I have used Turnigy batteries with good success over the years. At the beginning they were relatively cheap and proved to work well. They may not have lasted as long as some of the older brands I had used, but they were a fraction of the price. I had been using some 6s 5000mAh batteries in my Miss Wind biplane and they were getting tired. I had no complaints after several years of service, so when I built (that is a wild exaggeration really. Threw some servos and glue inside, then shook for two minutes is more like it) I look for some exact replacements. I realised that two batteries in series would provide the 12S battery I needed for this model. So, I went online to find that they had been replaced by Turnigy Graphene Batteries at a much higher price. Still, given god previous experience and having read the blurb about how good they were I took the plunge.
They had much the same size and weight but apparently a much better C rating. I had heard that you needed to treat them gently at first so I did a run in process for several cycles.
What a disappointment they have been. They provide less power than the cheaper earlier version and they cost far more. To add insult to injury, flying my miss wind biplane the other week I was suprised when one 6s 5000mAh battery was depleted after just 3500mA had been used. I have an alarm set to 4000mA's and I normally Have power to spare. Despite always doing a balance charge on every charge, one cell showed up as very low and continual balancing has not recovered the cell.
I have subsequently heard from a source in the electric flight competition scene, that it’s has been shown that there is in fact no Graphene in these batteries at all! If this is true, then it’s a scam plain and simple.
I was advised by the same source to buy from MyLipo.de. I have done so for some 3s batteries. The early results have been superb, and I intend to go back for more.
Avoid Turnigy Graphene guys. They are a waste of money.
They had much the same size and weight but apparently a much better C rating. I had heard that you needed to treat them gently at first so I did a run in process for several cycles.
What a disappointment they have been. They provide less power than the cheaper earlier version and they cost far more. To add insult to injury, flying my miss wind biplane the other week I was suprised when one 6s 5000mAh battery was depleted after just 3500mA had been used. I have an alarm set to 4000mA's and I normally Have power to spare. Despite always doing a balance charge on every charge, one cell showed up as very low and continual balancing has not recovered the cell.
I have subsequently heard from a source in the electric flight competition scene, that it’s has been shown that there is in fact no Graphene in these batteries at all! If this is true, then it’s a scam plain and simple.
I was advised by the same source to buy from MyLipo.de. I have done so for some 3s batteries. The early results have been superb, and I intend to go back for more.
Avoid Turnigy Graphene guys. They are a waste of money.