OK, I’ve got your attention. When I did my review of the Baofeng UV-5RA radio back in January I listed the Etekcity BAOFENG Car Charger Cable (12vDC charger adapter cable) as an optional accessory to charge the radio from a 12 vDC power source via the radio’s charging cradle. That information is not valid. Upon more extensive testing with my own hands and multimeter I found the power at the plug end that goes into the charging cradle to be the full DC voltage coming from the vehicle power source with NO step-down.
The charging cradle states that the maximum input into the cradle should be 10 vDC. If your vehicle has a full battery charge and/or is running, it will almost assuredly be putting out 12 – 13.8 vDC. And according to the Baofeng charging cradle, that much voltage is too much voltage.
I recommend that you discontinue use of the Etekcity BAOFENG Car Charger Cable (12vDC charger adapter cable) immediately. DO NOT USE THAT ADAPTER CABLE to power your Baofeng UV-5R radio charging cradle.
I am testing a different adapter and will advise on what I find once the testing is done. I am going to go so far this time as to actually hook it up and make sure it is a safe and workable solution. I apologize for putting that information out earlier, I took the manufacturer’s information to be accurate and limited my testing to simply plugging it in and seeing if the charging would take place, which it did. But given enough time I would assume the charging cradle would heat up and potentially burn out/up the charging cradle and possible damage the radio as well.
I will keep everyone posted here at the website. Check back often for updates.
NOTE: This same information would apply to ANY 12 vDC adapter that you may be using. Test it yourself to ensure that the voltage going into the Baofeng UV-5R charging cradle is not more than 10 vDC.