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| 11:07.23 | Maxdamantus | This N810 battery seems to be working quite well. The device has been on without charging for around 8 days and the icon seems to show it still at around 75% (can't see an actual number). |
| 11:07.39 | Maxdamantus | Seems fairly low-power overall. |
| 11:07.50 | Maxdamantus | Dunno if it goes into a sleep state. |
| 11:07.50 | KotCzarny | o.O |
| 11:08.06 | KotCzarny | afair my n800 ate through battery in ~7days |
| 11:08.29 | Maxdamantus | It's not connected to wifi or anything. |
| 11:08.57 | KotCzarny | what is the battery voltage? |
| 11:09.47 | Maxdamantus | Wonder how to tell without taking it out. |
| 11:10.05 | Maxdamantus | It doesn't have the same chip as the N900 at least. |
| 11:10.09 | KotCzarny | there was a tool for that i think |
| 11:11.46 | KotCzarny | https://mrrau.eu:20281/n800/kcbatt/ |
| 11:11.58 | KotCzarny | written by me, so might be awfully inacurate |
| 11:12.03 | KotCzarny | feel free to improve |
| 11:14.25 | KotCzarny | and related post: https://talk.maemo.org/showpost.php?p=153728&postcount=13 |
| 11:22.06 | KotCzarny | see the last post of that thread |
| 11:22.50 | KotCzarny | and whole thread has some nice notes |
| 11:23.20 | Maxdamantus | retu-adc #8: 450 batt: 52% [###___] idle:154.0h idle(w/wifi):57.9h max:2.0h |
| 11:23.39 | Maxdamantus | Is that 450 as in 4.5 V? That doesn't seem right. |
| 11:23.50 | Maxdamantus | No, because -bf is 550. |
| 11:24.10 | KotCzarny | nah |
| 11:24.13 | KotCzarny | its not the voltage |
| 11:24.16 | KotCzarny | just raw values |
| 11:24.27 | KotCzarny | and because retu is undocumented you can only guess |
| 11:25.13 | Maxdamantus | But if it's an ADC connected to the battery, it should universally correspond to a particular voltage. |
| 11:25.27 | KotCzarny | but you dont know what that register reports |
| 11:25.41 | KotCzarny | might be scaled value |
| 11:26.20 | KotCzarny | and as i've mentioned in the post, graphs can shed some light what those values mean |
| 11:26.24 | KotCzarny | see the plots |
| 11:26.52 | Maxdamantus | But presumably it will still return a particular value for a particular voltage, so someone just needs to figure out the corresponding values, which you can do by attaching a multimeter in parallel with the battery, or just providing a controllable constant volage power source. |
| 11:26.58 | KotCzarny | https://mrrau.eu:20281/n800/kcbatt/batt2gp-0.png |
| 11:27.35 | KotCzarny | the others are from different runs |
| 11:27.49 | KotCzarny | https://mrrau.eu:20281/n800/kcbatt/batt2gp.png this seems quite long run |
| 11:28.00 | KotCzarny | legend in the middle |
| 11:29.21 | KotCzarny | funny that light sensor reports temperature too |
| 11:30.45 | KotCzarny | you can see that 400 should correspond roughly to 3.6V |
| 11:30.57 | KotCzarny | assuming you kno the li-ion discharge curve |
| 11:31.57 | KotCzarny | maybe even 450 |
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