where can i buy a new charger for my HP Pavilion dv6700 laptop online?

You may find one here www.nextag.com/hp-dv6700/search-html

You can easily replace your charger online for a fraction of the cost of going through HP itself P Pavilion DV6700 Laptop Charger AC Adapter Power Supply and Power Cord.  I always keep extra power and charger cords for my laptops in case I need to travel or have one that breaks. They have comprehensive internal safety features with filter input, line voltage,  spikes or surges and limit output voltage or current to protect your laptop from electrical hazards; high power efficiency provides consistent and continuous power for your laptop. Each of these feature the following:

• Model: HP Pavilion DV6700
• Compatible with: HP 19V 4.74A (5.5*2.5)
• Input Voltage: AC 100 ~ 240V 50/60Hz
• Durable case sealed for protection against moisture
• Surge protection
• Internal safety features against electrical hazards
• Over-voltage, over-current, and over-temperature protection
• 100% Genuine Original Manufacturer Compatible Laptop Battery Charger and Power Cable

Here are some places online that you can check out ,they have some great sales on DV6700 laptop chargers. I was not sure if you wanted a regular plug in the wall one or a charger for the car. You can use the car charger when you are on the go and would like to use it while traveling.