Replacement battery for Baofeng UV-B5 UV-B6 transceiver, using two 18650 cells (increased capacity, up to 3400mAh instead of the original 1200 mAh) with micro-USB charging connector. Can be used and charged simultaneously, very useful for a car.
All electronic parts are available at ebay or aliexpress.
Detailed guide (in Russian) https://thundervg.livejournal.com/41533.html
USB breakout board: https://www.aliexpress.com/item/10pcs-Mini-Micro-USB-to-DIP-2-54mm-Adapter-Connector-Module-Board-Panel-Female-5-Pin/32715348458.html
Battery protection board: https://www.ebay.com/itm/2S-8A-7-4V-8-4V-w-Balance-Li-ion-Lithium-18650-Battery-BMS-Protection-PCB-Board/272998963391
Li-Ion 2S charger board: https://www.ebay.com/itm/1S-2S-2A-3-7V-7-4V-Lithium-Li-ion-18650-Battery-Charging-Board-Charger-Module/272891200699
| cover_1.stl | 18.3KB | |
| cover_2.stl | 7.8KB | |
| enclosure_v12.1.stl | 1.6MB | |
| Holder_batt_v8.m3d | 621.6KB |
