the people are nice and helpful, but after the third attempt, I have my brown Sonic Complete discarded .- ( first ordered battery and allow the solder elektrolden - after 2 days dead. then returned to the supplier who has exchanged without difficulty. after 2 weeks dead again. echoed back to it - again replaced - after 2 days dead again. I then reported me anymore, not worth it - 3x postage paid, soldering paid Battery paid buertse still in the garbage - that's a shame, because if it works it would be a great thing for the environment and a chance of greed of manufacturers to escape ... shame !!!