So been using my trust fire charger (which is authentic) to charge all my batteries but it may seem that I'm doing wrong by doing so...I charge my mnke and 2 sonys vtc4 and vtc5 but have read online that these chargers are pos and to invest in better charger (which is reason for this post) although like I said has been working like a charm and only thing about it is that it takes its sweet ... time to recharge so any ideas on if I should upgrade or just keep it or what's up?