A generic battery that says it fit for something should be fine.I would make sure there is a good return policy , just in case it doesn't..

I found with a quick google search.. just make sure the system requirements match up..
Amazon.com: Hi-quality Laptop Battery for Dell Latitude PPL PPX C CP CPi CPIA CPIR CPM CPT CPTC CPX CPXH CPXJ Series: Electronics

I avoid setting my laptops on anything paper or flammable , just to be safe..