I have an old 3ds. My battery life in game is very poor only 1h and 3ds turns off. I changed battery to Chinese 2000 mah and nothing improve, 1h and 3ds is dead. Nothing helps, I tried different chargers and even i replaced sd card. I don't use any piracy flashcards. I've got latest software update and I reverted to factory settings, still the same battery life. Any help, suggestions? Thanks in advance.