On Thursday, May 12, 2016 at 12:20:28 PM UTC-7, wrote:
On Monday, April 29, 2013 at 9:10:04 PM UTC-4, 2NO wrote:
I'm growing weary of my PowerSonic (PoS) batteries crapping out a few minutes after their 1 year warranty expries.

Are Werker batteries any better? ... or are they essentially the same?

The salesman at Batteries Plus said they pretty much stopped selling PS because they were having quality issues ...

PowerSonic batteries are made in China and they do indeed SUCK. I will no longer use them in medical devices. I use Werker batteries and they last far longer and work much better. As the name implies they must be made in Germany and just like a VW, run forever.

The best but equally expensive are the Sonnenschein dryfit batteries, made in Germany, par non. I ran 14v 10 ah for many years, and have a pair back from 2005 that I will still occasionally put on charge and do an hour or so locally. Of course for longer flights I will use newer ones (and also some LiPo ones, equally reliable). Sonnenschein dryfit NEVER failed me. These are also hard to get but obtainable. If need be, I can post a source.