This is a good replacement BL-5 battery for the Baofeng.Is this replacement battery truly 3800mAh? I can't say, as this battery model has not yet failed, and so far, the performance (operating hours per charge) seems quite good, lasting several hours, over a few months of use.Some other models (not this one) of the so-called "extended" BL-5 3800mAh batteries which include the tiny barrel connector charge port on the side are FAKE (not truly 3800mAh). Internally, many of those batteries (2 out of 3 physically checked, after they died) did NOT contain 2 battery cells, instead only one- but the extended CASE was weighted down with scrap metal and foam tape add weight, and to keep them from rattling. Yet they used a relatively convincing "Baofeng" brand factory (looking) label.Back to this model. I bought 2, and so far, both have charged a expected (I typically use a charging cradle, though the option for USB-C is nice to have for traveling), and these batteries typically last for a couple days of morning, lunch and dinner / drive home use, so having qty 2 means I can swap out easily when needed. Often the Baofeng runs out of power without a battery low warning. This is NOT caused by the battery, its simply a very cheap, minimal feature radio, and most firmware versions give no audible warning when running low on power.A warning may be displayed, but the radio is either too close, or off to the side while talking using the radio, and not convenient to read regularly).Advice? As hinted on above, Baofeng does not include some nice to have features. One of those missing features is a well made battery charge controller (I'm referring to the original Baofeng charging cradle). Despite having 3 contact tabs on the edge of the BL-5 battery, internally it only2has 2 wires connected (based on the ones I've autopsied post mortem). Simple advice, when the charging light changes to GREEN, immediately remove the battery from the charger, don't let it sit there simmering/ cooking. This will help to extend your battery life.Unanswered questions? This battery claims that the USB-C port fast charges the battery. While the battery does charge fine via USB-C, I didn't find it to be any faster vs charging in the Baofeng cradle. Perhaps they mean that USB-C can handle more amperage vs USB-A version 1.0? This is true, but it's not a very profound claim, since 900~26000mAh is obviously more current and generally "faster" than 500mAh. But another question is, does this upgraded/ added USB-C charging circuit include an important feature that Baofeng forgot, a charge controller with internal battery temperature sensor to prevent the battery from overheating, and to thereby extend battery life by preventing it from over charging? If yes, then THAT feature would be their best selling point! But I'm not going to sacrifice a working battery to find out. But after one fails, I may do a quick peek under to hood to see how it was built. :-)For now, though I've bought many other replacement BL-5 batteries in the past few years, at this time I prefer this model of replacement battery for use with my Baofeng UV-5RX3 and other similar models. It slides in place and latches smoothly in place, makes good contact, has reasonably long battery life, charges either by cradle or USB-C as needed, and simply works without hassle.

Funciónal, Solo es 1 batería, no dos como en la imagen.

great accessory for the older radios, it is nice to be able to charge from any USB-c cord and not carry around an extra cord and adapter.

Seem to work fine. Original battery or maybe the charger quit working. Wasn't really sure as the original battery only could be charged on the base. These solved the problem since they can be charged with USB C. Fit the radio perfectly. This way I have a backup battery and can charge the radio virtually anywhere.

Awesome upgrade. Battery life is far greater than stock. USB-c charging is so much more convenient for on the go charging. I broke my charging cradle and for a few more dollars got this extended life battery along with the ability to charge almost anywhere now as USB-c has become ubiquitous. May I also mention the onboard led indicator showing the battery charge status. You may also charge this battery independent of the radio. Authentic Baofeng brand battery was a compatible fit with my UV-5TV2+. Love the added length this battery gives my radio. Great design, easy to use, durable battery.

USB-C charging is a standard now the same way micro-USB became a standard so long ago. The fact that you can get a USB-C capable battery for the UV-5R in both the regular and extended version is awesome. I got.this extended version because I had a USB-C regular size battery that came with my UV-5Rx3 but it ballooned after sitting in my car, in direct California sunlight on a 110+ day. Couldn't be happier though. I often forget to turn the radio off and sometimes the battery would drain completely. Now with this extended battery I just leave the radio on with it hooked up to a 5v3a solar panel and it stays charged without any issues. I only wish I upgraded to this sooner. High quality, fit could be a little better but it gets the job done. Secures to the radio without any jiggling, easy to use, easy to install, great value for the money. Performance is outstanding. Capable of receiving for well over a day and sufficient for solar charging.