08-06-2016, 07:08 PM
(This post was last modified: 09-07-2016, 09:32 AM by MarkHaysHarris777.
Edit Reason: removed my quote (only my quote) marcus
)
Yes, you can connect a lithium battery to the euler bus. You connect the +ve of the battery to pin 3 (Lithium Batt+), the -ve of the battery to pin 6 (GND, so really any GND pin will do), and pin 5 to GND via a 10k resistor (if you want the pine64 to charge the battery) to fool the temperature sensor protection.
If you want to use the temperature protection, all that should be needed is a thermistor (but what value you'd need I don't know... maybe a NTC 10K?? schematic seems to detail the state when there is no temp sensor). Or you could simply add a standard lipo protection circuit to be battery and connect to that instead.
Any battery above 2Ah (2000mAh) capacity should be fine, as I have yet to see the pine64 charge a battery above 1A, which is a 0.5C (50% of capacity) charge rate, which any lithium battery that isn't a dud will take. You are simply better off with a higher capacity battery as it means it will be stressed less when charging, and will get reasonable run times off the battery.
And yes, you'll need to move the jumper (if your board has one) from the DCINc position to the BAT position if you want the 5v output and the USB ports to work.
If you want to use the temperature protection, all that should be needed is a thermistor (but what value you'd need I don't know... maybe a NTC 10K?? schematic seems to detail the state when there is no temp sensor). Or you could simply add a standard lipo protection circuit to be battery and connect to that instead.
Any battery above 2Ah (2000mAh) capacity should be fine, as I have yet to see the pine64 charge a battery above 1A, which is a 0.5C (50% of capacity) charge rate, which any lithium battery that isn't a dud will take. You are simply better off with a higher capacity battery as it means it will be stressed less when charging, and will get reasonable run times off the battery.
And yes, you'll need to move the jumper (if your board has one) from the DCINc position to the BAT position if you want the 5v output and the USB ports to work.
