well i recently bought 4 AAA batteries from BestBuy at 750 mAh at 1.2 V. I'm using it for a small digital camera. Now, i bought a charger at Radio Shack, but i'm not sure how long it'll take to charge them. I'm trying to figure out the math. It says the timer on the charger is 2.5hrs, so i'm assuming after 2.5 hrs, it'll automatically turn off. Input voltage range: 11VDC to 16VDC Charging Current: AA: 1000mA AAA: 400mA. That is the part i don't understand. If it says the "typical" charge on it is 400mA, how long will it take to charge a 750mAh? If it's longer than 2.5hrs than the charge is basically useless, if it doesn't charge it to the max, because it'll ruin the battery. I saw a overnight charger, but it said it would take 13 hrs to charge this 750 current battery. So i thought i'd just get the quick charger. But now that i opened it, i'm not too sure if it'll actually charge the battery to the fullest. Please help. Thanks!!