I had used the charger from time to time, making sure that the batteries were not left on for too long. Unfortunately, three months later, after charging the batteries a couple of them burst after being placed into my Pokemon Go device. Leaking fluid inside the device and thus pretty much ruining it. I would go with another manufacturer.Update: After seeing my review they were kind enough to send me a replacement. Haven't tested it out yet, but it was nice to get some customer care
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