Using KGO batteries and Kanger T2 & T3s for about a month now and one of my 2 KGOs is barely charging any longer. Was it the Kangers or a dud KGO battery? The KGOs have only been in steady use for about 2-3months. One works all day, the other one works about 10 times before the led blinks that it needs recharging. I'm not sure what the problem is other than a dud battery. Not sure I want to get another KGO if the life expectancy is so short. Any advice on batteries that work with Kangers that last longer than a month or 3?