Originally Posted by The_Biz
Idk what the output is tbh. But I have several of their chargers and they charge fast. Faster, way faster than the slow stock charger.
If the T-989 circuitry is anything like the ATT Samsung Infuse, ATT Samsung GS2 or the Galaxy S1 variants the charging current is LIMITED by the ROM & hardware and the MAX current for the device limited by the chipset is ~600mah so a higher current charger won't help, it's probably placebo effect.
I believe Entropy512 on the ATT GS2 forum has done some heavy investigation into the integrated chipsets in the phones used for charging these devices and has confirmed these limitations using the manufacturers chipset specs.
He was able to jack up the max charge current about 100mah or so on a couple devices in the kernel. But a larger charger is going to make very little if any difference. The phone automatically current limits to prevent overcharging the battery or at worse an explosion. These batteries are very dangerous at too high current.
Bottom line is you could use a 10amp charger and the phone will only charge at it's rated capacity which a WAY WAY below 2000mah and probably no more than 700mah on these phones.