Could Accessories ruin the investment?

[IamGov#IM]

I am looking to get a couple of chargers because we all know how wonderfull the batteries are on these devices! I was wondering if I really had to spend the extreme amount of money on the Apple brand products or if off brands will work. What should I look out for? If it has a chipset in it to protect overcharging does that means it is ok?

 

[zigzagg]

Try to but the most expensive one. Cheap ones will BURN the iPhone and warranty will NOT cover it.