I recently drew up & printed parts for DC powered charging bases for a couple of HT's. Their OEM bases had either broken mounts or were AC only.
I did a couple for the BF-888S, mainly due to the OEM base being 110v AC only. The DIY version has a USB-C socket for 5v input.
Contacts used are Keystone 5321, M2.5 cap head screws hold them in place. The rest of assembly is done with M3 cap head screws.
I also did a couple for the UV-B5. The OEM base had cracked mounting splines that kept the radio/battery from being securely held. I used a pigtail barrel connector on these.
Both styles use a TP5100 charging module. It can be easily configured for either 1S or 2S charging and a 1A or 2A charging current. 1S needs >= 5v, 2S needs 10-15v. I set both versions for 1A charging.
I put the source files for 3D printing & assembly info on Printables.
https://www.printables.com/model/1240224-diy-charging-base-for-bf-888s-ht
https://www.printables.com/model/1229594-uv-b5-charging-base
I did a couple for the BF-888S, mainly due to the OEM base being 110v AC only. The DIY version has a USB-C socket for 5v input.
Contacts used are Keystone 5321, M2.5 cap head screws hold them in place. The rest of assembly is done with M3 cap head screws.
I also did a couple for the UV-B5. The OEM base had cracked mounting splines that kept the radio/battery from being securely held. I used a pigtail barrel connector on these.
Both styles use a TP5100 charging module. It can be easily configured for either 1S or 2S charging and a 1A or 2A charging current. 1S needs >= 5v, 2S needs 10-15v. I set both versions for 1A charging.
I put the source files for 3D printing & assembly info on Printables.
https://www.printables.com/model/1240224-diy-charging-base-for-bf-888s-ht
https://www.printables.com/model/1229594-uv-b5-charging-base
