When ordering a Compaq Presario CQ35 AC adapter, check the voltage and amperage on the bottom of the laptop to make sure you are ordering the correct AC adapter. Some models have more than one AC adapter depending on the amperage rating. The rating should be taken from the laptop, not the AC adapter because this is the best match of what the laptop needs. You should find a rating that looks like this: 19V — 4.74A. It can be on the label on the bottom of the laptop or in the battery compartment. AC adapters are safe to use within +/- 1V of the laptop voltage. It is also safe to have a higher amperage than marked on the laptop becuase the laptop can only pull the amperage it needs. Less than the required amperage will cause the power supply to burn up because the laptop is pulling more amperage than the AC adater can give it.Replacement For Compaq Presario CQ35 Adapter is rated at 18.5V 3.5A 65W.The high quality laptop charger for compaq presario cq35 provides your laptop with safe and reliable power.It is over Charge protection, Voltage protection, Temperature protection, Short circuit protection, enjoys 1-Year Warranty,60-Day Money Back!Welcome to replacement laptop AC power adapters online store.Replacement Compaq Laptop AC Adapters and Power Supply for Notebook Computers.Replacement laptop AC adapter is guaranteed to meet or exceed original Compaq laptop AC adapter.Full 2 hours burning test; 3 times quality check and 2 times drop test by QC before package.Warranty and Guarantee: 1 year warranty, 60 days money back.Replacement laptop AC adapter is guaranteed to meet or exceed original laptop AC adapter.Full 2 hours burning test; 3 times quality check and 2 times drop test by QC before package.Warranty and Guarantee: 1 year warranty, 60 days money back.