I bought a Replacement Canon BP-511 Battery for my Powershot G3 camera, together with a charger. They came in 5 days from the day I placed the order, weekend and labor day included. They also send you tracking numbers (my package came through FedEx).  
 
You can't beat the price - original canon batteries (1100 MAh) sell for around $60-70, other companies' replacements for around $35. For $47 (shipping included) I bought both a 1300 MAh and a Lenmar charger.  
 
The battery is charging as I type this, hope it works - I'll update my rating with a few word on battery life after a few days of use.  
 
Highly recommended.

Good products & prices (at least on what I ordered). Fast service with e-mail confirmation of order and shipping (with tracking numbers provided).

I ordered a 950mAh camera battery for a Canon S400. I received a 1000mAh battery in super quick time. They accept PayPal as well as credit cards. Highly recommended.

Ordered 8 AA NiMH batteries and 3 NB-1LH replacement for Canon battery. Fast 2 day shipment for a reasonable $5.99. Great batteries. Highly recommd.

Good price, good service. Shipment was delayed a little due to back order. I wish they could send me an email to notice the shipment delay though.

Product delivered exactly as promised (NiMh rechargable batteries & charger). Reasonable pricing. Transaction smooth and professional. Would not hesitate to do business with Sterling Tech again.

I have ordered from them multiple times. Items always arrive promptly and are as described on their website. I would not hesitate to deal with them again.