View source for Neo FreeRunner Battery
From Openmoko
You do not have permission to edit this page, for the following reasons:
You can view and copy the source of this page:
Templates used on this page:
Return to Neo FreeRunner Battery.
You do not have permission to edit this page, for the following reasons:
You can view and copy the source of this page:
Templates used on this page:
Return to Neo FreeRunner Battery.
For more information, see the GTA01 battery info at Neo1973 Battery
Battery life is a work in progress. The power saving software is in a very rudimentary state. At the moment 12h is about the most (note though a recent result of at least 21h, mostly in suspend, with multiple short wakeups, on the predecessor device GTA01). A week standby and 6 hours talk, 20 hours mp3 might be attainable when power saving software is complete.
This is an issue because the internal charging circuitry can not be turned on until the FreeRunner has booted, and booting through USB power alone does not work.
See the workarounds for PMU/Charger Issue
Q: Does anyone know WHY it don't charge when it is off? My logic says that it is very important to have the option charge the battery when it is flat.
A: I can't give you a simple answer. Charging is controlled by the PCF50633 chip, based on configuration values that are written to it by u-boot, Linux, and userspace programs. Some of these settings are preserved across a power-cycle (the PCF50633 has a small backup battery that's also used to keep the RTC running) so the behavior at startup depends on the software that you used during your last session.
Another complication is that some Freerunners are capable of starting up without a battery while others are not (possibly due to different capacitor values on the internal power rails).
I can give a few hints:
Kudos to Mike Montour on the Community mailing list.
Other known FreeRunner-compatible batteries include the BL-series (BL-4X, BL-5X) from Nokia, and their third-party equivalents. These may not work to revive a device and may not report charge information. It is probably a good idea to check that your battery is not greater than the stock battery's voltage of 3.7V (the above suggests that 4.5VDC should be fine) unless you know what you are doing.
Battery Model | Capacity (mAh) | Charge info reported | Notes |
---|---|---|---|
NOKIA BL-4 | no | ||
NOKIA BL-4C | 750 | no | Slightly thinner than original. |
NOKIA BL-5B | 760/890 | ||
NOKIA BL-5C | 950 | no | |
NOKIA BL-6C | 1070 | no |
For information about USB battery chargers that can be used with the Neo FreeRunner see