07-29-2022, 04:20 AM
(07-28-2022, 11:57 AM)jg159357 Wrote: What about the Model A? Is that what you're updating on the Wiki? Reading between the lines, is the model A only able to have an RTC battery after the upcoming driver changes?
The LiPo battery on the Model A doubles as the RTC battery. It should work without any driver, the kernel just won't know what the current battery level is and how to charge it, from what I know. So you can connect a LiPo battery to it right now even without having Linux or EDKII drivers, and it should still keep the RTC clock alive.
To use a LiPo battery on Model A, be sure to remove the BAT_ON/OFF jumper when connecting a battery.
As for which batteries can be used, any LiPo with a nominal 3.7V can be used, including several cells in parallel from what I understand. PINE64 sells a case for three 18650 cells in parallel that should work, but if you're just going for the RTC battery you can obviously go smaller.
Occasional Linux Kernel Contributor, Avid Wiki Updater, Ask Me About Quartz64
Open Hardware Quartz64 Model A TOSLink Adapter
Pi-bus GPIO Extender For ROCKPro64 And Quartz64 Model A
Plebian GNU/Linux