At least during charging this appears to be working better, 2 messages per minute for the most part. I always have a client connected as my python client is always connected waiting for messages. These logs are with 63b87c3f46d5af9eaf49739aa3179c4d026aa3de + a hack to ignore changes in the ms_v_bat_12v_voltage metric (and also nissan leaf remote control changes but they don't affect the telemetry). I'm ignoring the 12v because it appears to have only 3 decimal significant figures of signal and we're monitoring changes on 3 additional significant figures of noise. The following are the values every minute while the car is charging the traction battery and the 12v system is powered by the on board DC-DC. 13.1374 13.1923 13.1813 13.1264 13.1209 13.1978 13.1044 13.1154 13.1538 13.2418 13.1593 13.1813 13.1484 13.1813 13.1374 13.1813 13.1813 It's probably worth storing and even transmitting 4 significant figures, as you can see trends in the noise much more clearly than the v2's 100mV steps, but we shouldn't trigger notifications on the noise. We could also look at averaging or taking the median to increase the signal to noise ratio. The full log below shows the few minutes as I arrived home and it connected to the wifi (gsm is too unstable to use) and then I plugged in and started charging. 2017-12-19 05:09:33,21226,'#79 A got login' 2017-12-19 05:10:01,21292,'#37 C got login' 2017-12-19 05:10:01,21293,'#37 C rx msg S 50,K,0,0,stopped,standard,42,0,0,0,0,0,13,21,0,0,0,0,63.22,0,0,0,0,-1,0,0,0,0,0,0,0,0.00,378.50,96' 2017-12-19 05:10:01,21294,'#37 C rx msg D 128,0,5,0,0,27,0,70,0,460,21,1,1,1,12.5934,0,0,0,0,0' 2017-12-19 05:10:02,21295,'#37 C rx msg L 0,0,0,0,0,0,0,0,0,0,0' 2017-12-19 05:10:02,21296,'#37 C rx msg W 0,0,0,0,0,0,0,0,0' 2017-12-19 05:10:03,21297,'#37 C rx msg F 3.0.0/factory/main build (idf v2.1-20-g88ab5d4) Dec 18 2017 09:50:21,,0,1,NL,redacted' 2017-12-19 05:10:03,21298,'#37 C rx msg S 50,K,0,0,stopped,standard,42,0,0,0,0,0,13,21,0,0,0,0,63.22,0,0,0,0,-1,0,0,0,0,0,0,0,0.00,378.50,96' 2017-12-19 05:10:03,21299,'#37 C rx msg D 128,0,5,0,0,27,0,70,0,460,21,1,1,1,12.5934,0,0,0,0,0' 2017-12-19 05:10:04,21300,'#37 C rx msg L 0,0,0,0,0,0,0,0,0,0,0' 2017-12-19 05:10:04,21301,'#37 C rx msg W 0,0,0,0,0,0,0,0,0' 2017-12-19 05:10:05,21302,'#37 C rx msg F 3.0.0/factory/main build (idf v2.1-20-g88ab5d4) Dec 18 2017 09:50:21,,0,1,NL,redacted' 2017-12-19 05:10:22,21360,'#37 C rx msg S 50,K,511,0,charging,standard,42,0,17,0,0,0,3,1,0,0,0,0,63.22,0,0,0,0,-1,0,0,0,0,0,0,0,-0.00,511.50,96' 2017-12-19 05:10:22,21361,'#37 C rx msg D 156,0,5,0,0,27,0,70,0,477,22,1,1,1,12.6758,0,0,0,0,0' 2017-12-19 05:10:23,21362,'#37 C rx msg S 50,K,378,0,charging,standard,42,0,10,0,0,0,3,1,0,0,0,0,63.22,0,0,0,0,-1,0,0,0,0,0,0,0,-0.00,378.50,96' 2017-12-19 05:10:23,21363,'#37 C rx msg S 50,K,378,0,charging,standard,42,0,10,0,0,0,3,1,0,0,0,0,63.13,0,0,0,0,-1,0,0,0,0,0,0,0,-0.00,378.50,96' 2017-12-19 05:10:24,21364,'#37 C rx msg S 50,K,378,0,charging,standard,42,0,10,0,0,0,3,1,0,0,0,0,63.13,0,0,0,0,-1,0,0,0,0,0,0,0,-0.00,378.50,96' 2017-12-19 05:10:27,21372,'#37 C rx msg S 50,K,378,0,charging,standard,42,0,10,0,0,0,3,1,0,0,0,0,63.13,0,0,0,0,-1,0,0,0,0,0,0,0,-0.00,378.50,96' 2017-12-19 05:11:19,21481,'#37 C rx msg S 50,K,379,5,charging,standard,42,0,10,0,0,0,3,1,0,0,0,0,63.13,0,0,0,0,-1,0,0,0,0,0,0,0,-0.00,379.50,96' 2017-12-19 05:11:19,21482,'#37 C rx msg D 156,0,5,0,0,27,0,80,0,521,22,1,1,1,13.1044,0,0,0,0,0' 2017-12-19 05:11:39,21537,'#37 C rx msg D 92,0,5,0,0,27,0,90,0,558,22,0,1,1,13.1374,0,0,0,0,0' 2017-12-19 05:12:03,21599,'#37 C rx msg S 50,K,379,4,charging,standard,42,0,10,1,0,0,3,1,0,0,0,0,63.13,0,0,0,0,-1,0,0,0,0,0,0,0,-0.00,379.50,96' 2017-12-19 05:12:03,21602,'#37 C rx msg D 92,0,5,0,0,27,0,90,0,582,22,0,1,1,13.1813,0,0,0,0,0' 2017-12-19 05:13:04,21745,'#37 C rx msg S 50,K,380,4,charging,standard,42,0,10,2,0,0,3,1,0,0,0,0,63.13,0,0,0,0,-1,0,0,0,0,0,0,0,-0.00,380.00,96' 2017-12-19 05:13:04,21746,'#37 C rx msg D 92,0,5,0,0,27,0,100,0,643,22,0,1,1,13.1648,0,0,0,0,0' 2017-12-19 05:14:05,21870,'#37 C rx msg S 50,K,380,4,charging,standard,42,0,10,3,0,0,3,1,0,0,0,0,63.13,0,0,0,0,-1,0,0,0,0,0,0,0,-0.00,380.00,96' 2017-12-19 05:14:07,21879,'#37 C rx msg D 92,0,5,0,0,27,0,110,0,704,22,0,1,1,13.1813,0,0,0,0,0' 2017-12-19 05:15:13,22039,'#37 C rx msg S 50,K,380,3,charging,standard,42,0,10,4,0,0,3,1,0,0,0,0,63.13,0,0,0,0,-1,0,0,0,0,0,0,0,-0.00,380.50,96' 2017-12-19 05:15:13,22040,'#37 C rx msg D 92,0,5,0,0,27,0,120,0,765,23,0,1,1,13.1593,0,0,0,0,0' 2017-12-19 05:15:51,22142,'#15 A timeout due app due to inactivity' 2017-12-19 05:15:54,22146,'#15 A got login' 2017-12-19 05:16:07,22183,'#37 C rx msg S 51,K,380,5,charging,standard,42,0,10,5,0,0,3,1,0,0,0,0,63.13,0,0,0,0,-1,0,0,0,0,0,0,0,-0.00,380.50,96' 2017-12-19 05:16:07,22184,'#37 C rx msg D 92,0,5,0,0,27,0,130,0,826,23,0,1,1,13.1813,0,0,0,0,0' 2017-12-19 05:17:08,22324,'#37 C rx msg S 51,K,380,4,charging,standard,42,0,10,6,0,0,3,1,0,0,0,0,63.13,0,0,0,0,-1,0,0,0,0,0,0,0,-0.00,380.50,96' 2017-12-19 05:17:08,22325,'#37 C rx msg D 92,0,5,0,0,27,0,140,0,887,23,0,1,1,13.1813,0,0,0,0,0' 2017-12-19 05:18:09,22450,'#37 C rx msg S 51,K,380,4,charging,standard,43,0,10,7,0,0,3,1,0,0,0,0,63.13,0,0,0,0,-1,0,0,0,0,0,0,0,-0.00,380.50,96' 2017-12-19 05:18:12,22457,'#37 C rx msg D 92,0,5,0,0,27,0,150,0,948,23,0,1,1,13.1923,0,0,0,0,0' 2017-12-19 05:19:10,22589,'#37 C rx msg S 51,K,380,4,charging,standard,43,0,10,8,0,0,3,1,0,0,0,0,63.13,0,0,0,0,-1,0,0,0,0,0,0,0,-0.00,380.50,96' 2017-12-19 05:19:10,22590,'#37 C rx msg D 92,0,5,0,0,27,0,160,0,1009,23,0,1,1,13.1593,0,0,0,0,0' 2017-12-19 05:20:11,22725,'#37 C rx msg S 51,K,381,4,charging,standard,43,0,10,9,0,0,3,1,0,0,0,0,63.13,0,0,0,0,-1,0,0,0,0,0,0,0,-0.00,381.00,96' 2017-12-19 05:20:11,22726,'#37 C rx msg D 92,0,5,0,0,27,0,170,0,1070,23,0,1,1,13.1703,0,0,0,0,0' 2017-12-19 05:21:12,22870,'#37 C rx msg S 51,K,381,4,charging,standard,43,0,10,10,0,0,3,1,0,0,0,0,63.13,0,0,0,0,-1,0,0,0,0,0,0,0,-0.00,381.00,96' 2017-12-19 05:21:12,22871,'#37 C rx msg D 92,0,5,0,0,27,0,180,0,1131,24,0,1,1,13.1813,0,0,0,0,0' 2017-12-19 05:22:13,22999,'#37 C rx msg S 51,K,381,4,charging,standard,43,0,10,11,0,0,3,1,0,0,0,0,63.13,0,0,0,0,-1,0,0,0,0,0,0,0,-0.00,381.00,96' 2017-12-19 05:22:13,23001,'#37 C rx msg D 92,0,5,0,0,27,0,190,0,1192,24,0,1,1,13.1319,0,0,0,0,0' 2017-12-19 05:23:14,23114,'#37 C rx msg S 52,K,381,4,charging,standard,43,0,10,12,0,0,3,1,0,0,0,0,63.13,0,0,0,0,-1,0,0,0,0,0,0,0,-0.00,381.00,96' 2017-12-19 05:23:14,23115,'#37 C rx msg D 92,0,5,0,0,27,0,200,0,1253,24,0,1,1,13.1813,0,0,0,0,0' 2017-12-19 05:24:15,23235,'#37 C rx msg S 52,K,381,4,charging,standard,43,0,10,13,0,0,3,1,0,0,0,0,63.13,0,0,0,0,-1,0,0,0,0,0,0,0,-0.00,381.00,96' 2017-12-19 05:24:15,23236,'#37 C rx msg D 92,0,5,0,0,27,0,210,0,1314,25,0,1,1,13.2033,0,0,0,0,0' 2017-12-19 05:25:16,23394,'#37 C rx msg S 52,K,381,4,charging,standard,43,0,10,14,0,0,3,1,0,0,0,0,63.13,0,0,0,0,-1,0,0,0,0,0,0,0,-0.00,381.00,96' 2017-12-19 05:25:16,23395,'#37 C rx msg D 92,0,5,0,0,27,0,220,0,1375,25,0,1,1,13.1978,0,0,0,0,0' 2017-12-19 05:26:17,23536,'#37 C rx msg S 52,K,381,5,charging,standard,44,0,10,15,0,0,3,1,0,0,0,0,63.13,0,0,0,0,-1,0,0,0,0,0,0,0,-0.00,381.50,96' 2017-12-19 05:26:17,23538,'#37 C rx msg D 92,0,5,0,0,27,0,230,0,1436,25,0,1,1,13.2143,0,0,0,0,0'