The U.S. Consumer Product Safety Commission says it's actively investigating 10 hoverboard fires across the country.

Early reports blame the fires on poor or defective batteries.

Recently, the British government seized 15,000 hoverboards arriving in the United Kingdom because of questionable batteries. In the United States, federal authorities told News 12, "We urge consumers to use care while charging the devices. Avoid overcharging and don't charge them while sleeping."

For the moment, hoverboard sales are completely unregulated. Since they are such a new product made by multiple companies overseas, no one really knows much about them.

Retailer Overstock.com stopped selling hoverboards Wednesday and is now offering customers a full refund.

Sean Kane, from the Safety Institute, is recommending against getting a hoverboard until more safety tests are done.

"It is actually good to hear that some of these retailers are looking to take [hoverboards] back because there is no guarantee of the safety and fitness of the product," says Kane.

Technology experts say customers should get their hoverboards directly from a manufacturer's website that has a U.S. return address. Customers should also look for certifications from testing agencies such as "UL" on the device or charger.