Need a better external battery charger? Anyone know anything good?

[BlackHawkA4]

I bought these cheap 5 dollar chargers off ebay. They work. The problem is they take 5-6 hours plus to charge the battery. It's fine when I'm not heavily using my phone cause I make it throug the day with both of them. But when I'm really hard on the phone and a battery goes in 3 hours.... I need something faster.

Anyone know of any good chargers? (This one was SUPPOSED to be 800ma output. Yea right. 700ma standard charger while the phone is on charges .5-.75 times faster.