Sansa Battery Runtimes

Introduction

This page documents runtime tests performed by Sansa users. The intention is to compare battery runtimes across a range of conditions and SVN revisions.

For test methodology see BatteryRuntime

Results

Model	RB Runtime	Sandisk Runtime	Format	Date Of Test	Comments
Sansa c200
c250	11h 55min	?	Repeat album (58.7 MB .ogg vorbis)	2007-12-22	SVN 15957
c250	10h 22min	?	Repeat album (55Mb MP3, ~160k)	2008-01-21	SVN 16119
c250	11h 14min	?	Repeat album (55Mb MP3, ~160k)	2008-01-21	SVN 16119 plus e200-test-02 w/ c200 defines
c250	14h 36min	?	Repeat root playlist (637MB MPC, ~200kB/s)	2008-02-25	r16410-080224 (Battery Benchmark)
c250	12h 49min	15h 34min	Repeat playlist (600MB, MP3 ~160k)	2008-04-11	SVN 16841 plus batt_bench_v3 patch (Battery Benchmark) by TomekWasilczyk
c240	14h 01min	?	Repeat album (57.6 MB MP3, ~208kb/s)	2008-07-20	SVN 18085 tested with FS#9155. Default settings, -20 dB, hold on, display off. (Battery Benchmark) by BertrikSikken
c240	14h 41min	?	Repeat album (57.6 MB MP3, ~208kb/s)	2008-07-19	SVN 18085 plus c200 display disable patch, tested with FS#9155. Default settings, -20 dB, hold on, display off. (Battery Benchmark) by BertrikSikken
c240	16h 00min	?	Repeat album (57.6 MB MP3, ~208kb/s)	2008-09-22	SVN 18560. Default settings, -20 dB, hold on, display off. (Battery Benchmark) by BertrikSikken
c240	14h 59min	?	Repeat album (52.9 MB OGG, ~146kb/s)	2008-07-27	SVN 18139 plus c200 display disable patch, tested with FS#9155. Default settings, -20 dB, hold on, display off. (Battery Benchmark) by BertrikSikken
Sansa c200v2
c240v2	9h 16min	?	Repeat album (MP3, 320kb/s)	2010-04-08	SVN 25499 (bench says 25498 since it was compiled before committing) , Default settings, hold off, display off, playback status screen (Battery Benchmark) by TobiasDiedrich
c240v2	9h 39min	?	Repeat album (MP3, 320kb/s)	2010-04-09	SVN 25499 (bench says 25498 since it was compiled before committing), Default settings, hold off, display off, main menu (Battery Benchmark) by TobiasDiedrich
Sansa e200
e280	15h 53min	?	Repeat album (90mb .ogg vorbis q8)	2007-08-31	SVN 14552 Battery Bench (it's the same file I uploaded in SandiskE200BatteryMeasurements)
e250	10h 45min	15h 00min	Repeat album (80 MB) LAME -APS (191kbs average)	2007-11-19	SVN 15652 No WPS, 16 Ohm phones @ -20 db, EQ off, crossfeed off, backlight off, etc. Battery Bench #1, Battery Bench #2
e280	16h 47min	?	Repeat album (FLAC)	2008-01-21	SVN 16105 Old Default Theme, Hold On, -20db, EQ off, crossfeed off, backlight off, etc. Battery Benchmark
e280	20h 53min	?	Repeat album (FLAC)	2008-01-15	SVN 16095 + Device Disable patch v10 - Old Default Theme, Hold On, -20db, EQ off, crossfeed off, backlight off, etc. Battery Benchmark
e270	17h 56min		Multiple albums q2 Vorbis	2008-01-20	SVN 16103 + device_disables_v11.patch - Custom theme, -30dB, EQ off, crossfeed off. -- PhilLight - 22 Jan 2008
e270	17h 07min	14h 11min 14h 16min	Multiple albums 192kbps MP3 Same playlist in Rockbox & OF	2008-01-22	SVN 16119 + e200-test-02.patch - Custom theme, -30dB, EQ off, crossfeed off. Battery Benchmark -- PhilLight - 22 Jan 2008
e280	20h 57min	?	Repeat album (FLAC)	2008-01-22	SVN 16119 + Device Disable patch v13 ("Sansa test 2", to be specific) - Old Default Theme, Hold On, -20db, EQ off, crossfeed off, backlight off, etc. Battery Benchmark
e280	15h 16min	?	Repeat album (90mb .ogg vorbis q8)	2008-01-30	SVN 16143 Battery Benchmark
e280	18h 22min	?	Repeat album (90mb .ogg vorbis q8)	2008-01-30	SVN 16143 + Device Disable patch v13 Battery Benchmark
e260	16:28:47	14:08:41	Repeat album (MP3 192 kbps 75 MB)	2008-02-11	SVN 16287, Both with settings reset, Rockbox with Cabbie v2 WPS, both with the same album on repeat, and with hold on therefore screen off. Both were measured by plugging the headphone out into the H140 and recording it AlexParker
e260	17h 07min	?	Repeat playlist (750MB q6 Ogg Vorbis, 173kbps average)	2008-07-26	SVN r18117 + batt_bench_v3 patch. Reset settings with last.fm log and replaygain enabled, -15dB, hold on (screen off). Battery Benchmark. -- NickTryon - 26 Jul 2008
e280	19h 19min	?	Repeat album (82MB mp3 VBR)	2008-09-22	SVN 18560 Battery Benchmark
e260	16h 43min	?	Repeat playlist (750MB q6 Ogg Vorbis, 173kbps average)	2008-10-07	3.0. Reset settings with last.fm log and replaygain enabled, -15dB, hold on (screen off). Battery Benchmark. -- NickTryon - 07 Oct 2008
e270	19h 22min	?	Multiple albums q2 Vorbis	2008-11-25	SVN 19203 - Custom theme, -35dB, Caption backlight on, EQ off, crossfeed off. Battery Benchmark -- PhilLight - 25 Nov 2008
e280	22h 28min	?	mp3 VBR ~192kbps	2008-12-15	SVN 19396 - Cabbiev2, -20dB, default settings Battery Benchmark -- JohannesLinke - 15 Dec 2008
e280	18h 03min	?	ogg VBR ~256kbps	2008-12-20	SVN 19396 - Cabbiev2, -20dB, default settings, showing the wps Battery Benchmark -- JohannesLinke - 31 Dec 2008
e280	19h 51min	?	ogg VBR ~256kbps	2008-12-20	SVN 19396 - Cabbiev2, -20dB, default settings, showing the menu Battery Benchmark -- JohannesLinke - 31 Dec 2008
e280	16h 51min	?	ogg VBR ~256kbps	2008-12-20	SVN 19396 - FreeState + some %pm-tags, -20dB, default settings, showing the wps Battery Benchmark -- JohannesLinke - 31 Dec 2008
e280	18h 05min	?	ogg VBR ~256kbps	2008-12-20	SVN 19396 - FreeState + some %pm-tags, -20dB, default settings, showing the wps, with FS#8532 Battery Benchmark -- JohannesLinke - 31 Dec 2008
e280	19h 53min	?	ogg VBR ~256kbps	2008-12-20	SVN 19396 - empty wps with %wd, -20dB, default settings, Battery Benchmark -- JohannesLinke - 31 Dec 2008
e280	22h 00min	?	mp3 320 kbps 160 MB	2018-01-04	9f6ce046c-171227; default settings but -25 db, battery_bench_e280
Sansa e200v2
e260v2	11h 17min	19h 05min	Repeat album mp3 192kbps	2009-10-03	SVN r22896 - default settings, e260v2-r22896-battery_bench.txt -- MichaelChicoine - 04 Oct 2009
e260v2	11h 37min		Repeat album mp3 192kbps	2009-10-16	SVN r23198 - default settings, e260v2-r23198-battery_bench.txt -- MichaelChicoine - 16 Oct 2009
e260v2	10h 37min		Repeat album mp3 192kbps	2010-01-31	SVN r24382 - default settings, e260v2-r24382-battery_bench.txt -- MichaelChicoine - 31 Jan 2010
e260v2	13h 09min		Repeat album mp3 192kbps	2010-03-08	SVN r25069 - default settings, https://www.rockbox.org/wiki/bin/viewfile/Main/SansaRuntime?filename=battery_bench.txt;rev=1 -- MichaelChicoine - 2010-03-09
e260v2	14h 17min		Repeat album mp3 192kbps	2010-05-06	SVN r25836 - default settings, e260v2-r25836-battery_bench.txt -- MichaelChicoine - 2010-05-06
e260v2	16h 12min		Repeat album mp3 192kbps	2010-05-09	SVN r25904 - default settings, battery_bench.txt -- MichaelChicoine - 2010-05-09
Sansa Fuze v1
Fuze v1, 2GB	11h 52min	13h 42min	Repeat: 12 ~5-minute oggs, VBR, ~192kbps	2009-11-16	r23620, directory cache, Artbox Widgets theme, -30dB, occasional interaction to turn the screen on (playback not changed or interrupted, no additional disk activity); Fuze Battery Bench - r23620; -- MichaelCarr - 2009-11-16
Fuze v1, 2GB	13h 36min	?	Repeat album mp3 VBR, ~270kbps	2011-02-23	3.7.1, volume 0dB, slightly changed EQ, battery_bench -- TomaszCetnarowski - 23 Feb 2011
Fuze v1, 4GB	14h 44min	22h 17min	Repeat album mp3 320kbps	2010-05-10	SVN r25845 - volume 0dB, battery_bench -- RafaelCarre - 2010-05-10
Sansa Fuze v2
Fuze v2, 8GB+16GB	20h 43min	22h 13min	Repeat Album, mp3 LAME 3.97 V2	2010-07-07	SVN r26906, volume -15dB, No EQ, Crossfade+Crossfeed at default settings. EQ used with Fuze V2 OF. FuzeV2_rbSVN26906_battery_bench.txt -- JosephSatchton - 2010-07-09...IEMs plugged into device for test.
Fuze v2, 8GB+16GB	21h 39min	See Above ^	Repeat Album, mp3 LAME 3.97 V2	2010-08-19	SVN r26906, volume -15db, No EQ, Crossfade+Crossfeed at default settings. HOWEVER, this test supercedes previous RB test above - backlight settings on RB were adjusted so backlight would not activate during song changes. battery_bench_v2Fuze_CorrectBacklightSettings.txt -- JosephSatchton - 2010-08-...IEMs plugged into device for test.
Fuze v2, 8GB+16GB	22h 40min	See Above ^	Repeat Album, OGG, Q6	2010-08-20	SVN r26906, volume -15dB, No EQ, Crossfade+Crossfeed at default settings. battery_bench_oggv6.txt -- JosephSatchton - 2010-08-20...IEMs plugged into device for test.
Fuze v2, 8GB	22h 7min		Repeat Album, MP3 LAME 3.98.4 V0	2010-08-20	SVN r27847, volume -25dB, No EQ. http://www.rockbox.org/wiki/pub/Main/SansaRuntime/battery_bench.txt -- EricBoyer - 2010-08-21
Sansa Clip v1
Clip v1, 1GB	8h 31min	?	Repeat album ogg ~160 kbps	2010-01-31	SVN r24407, default settings, -20dB, Clip battery bench - r24407; -- BertrikSikken - 2010-02-01
Clip v1, 1GB	8h 16min	?	Repeat album mp3 ~212 kbps	2010-02-03	SVN r24407, default settings, -20dB, Clip battery bench - r24407; -- BertrikSikken - 2010-02-03
Clip v1, 1GB	8h 03min	?	Repeat album mp3 ~212 kbps	2010-02-04	SVN r24504, default settings, -20dB, with FS#10906 (use extra PLL for higher sample rate accuracy) Clip battery bench - r24407; -- BertrikSikken - 2010-02-04
Clip v1, 1GB	10h 58min	?	Repeat album ogg ~160 kbps	2010-05-08	SVN r25896, default settings, -20dB, with FS#11246 (stop clock when SDRAM is idle) Clip battery bench - r25896; -- BertrikSikken - 2010-05-08
Clip v1, 2GB	5h 29min	14h 59min	Repeat album, mp3, 256kbps, 122MB	2010-02-01	SVN r24401 - default settings, Bench1, Bench2, -- JouniPaulus - 2010-02-04
Clip v1, 2GB	6h 57min		Repeat album, mp3, 256kbps, 122MB	2010-02-15	SVN r24572M - default settings, cycle radio explicitly on and off before test run, Bench, -- JouniPaulus - 2010-02-15
Clip v1, 2GB	9h 02min	?	Repeat album mp3 128 kbps	2010-02-09	SVN r24571, defaults settings, -33dB, Clip battery bench - r24571, -- AlexParker - 2010-02-10
Clip v1, 2GB	9h 39min		Repeat album, mp3, 256kbps, 122MB	2010-12-18	SVN r28848 - default settings, Bench -- JouniPaulus - 2010-12-18
Sansa Clip v2
Clip v2, 4GB	13h 0min	16h 2min	Repeat album Lame V2	2011-09-29	SVN r29679, stock headphones, same music and similar volume for RB and OF tests -- MichaelGiacomelli
Clip v2, 8GB	11h 07min	???	Repeat album, mp3 256kbps	2013-08-28	3.13	Volume -40dB, no headphones, default settings
Sansa Clip+
Clip+, 4GB	9h 18min	?	Repeat album ogg ~112 kbps	2010-05-11	SVN r25939, default settings, -20dB, frequency scaling disabled, Clip+ battery bench - r25939; -- JackHalpin - 2010-05-12
Clip+, 2GB	17h 20min	?	Repeat album ogg ~128 kbps	2010-07-04	SVN r27257, default settings, -25dB, PLL B enabled for audio, Clip+ battery bench - r27257 -- BertrikSikken
Clip+, 2GB	17h 21min	?	Repeat album ogg ~128 kbps	2010-07-05	SVN r27257, default settings, -25 dB, plain SVN, Clip+ battery bench - r27257 -- BertrikSikken
Clip+, 2GB	17h 17min	?	Repeat album ogg ~160 kpbs	2010-07-23	SVN r27524, default settings, -25 dB, plain SVN, Clip+ battery bench - r27524 -- BertrikSikken This is a "COMBO4E" Clip+ variant with RDA5802 tuner and "new" OLED controller.
Clip+, 4GB+2GB	15h 22min		Repeat Album, LAME MP3 3.98.4 V0	2010-8-22	SVN r27840, volume 0dB, No EQ, Album was on microSD Card, Battery Bench .txt -- EricBoyer - 2010-08-22
Clip+, 4GB	16h 5min	?	Repeat playlist, ogg ~192 kbps (-q6)	2010-09-25	SVN r28154, volume between -65 dB and -55 dB, No EQ, I used the player nearly normally (playlist generation, database browsing, etc.) -- BenjaminDru
Clip+, 2GB	17h 14min	?	Repeat track, Flac -q8	2010-10-07	SVN r28208, volume between 15-20 dB.- clipplus-r28208_-_2010-10-07.txt -- YuryAntonov
Clip+, 8GB	16h 27min		Repeat Album, Flac	2010-10-10	SVN r28220, volume -15 dB, bass 15dB, trebble 7dB, no EQ. clipplus-8gb-svn-r28220-2010-10-10.txt by dellik
Clip+, 4GB	16h 30min	10h 26min	Repeat Album, LAME -V2	2011-6-13	SVN r29870, volume -10 dB. No SD card, sd variant 0 by saratoga
Clip+, 4GB	16h 15min		Repeat Album, LAME -V2	2011-6-13	SVN r29870, volume -10 dB. 8GB SD card, album on internal storage, sd variant 0 by saratoga
Clip+, 4GB	14h 53min	10h 26min	Repeat Album, LAME -V2	2011-11-5	SVN r30904M, PCLK=40MHz, volume -30 dB. No SD card, sd variant 0 by saratoga
Clip+, 4GB	10h 50min		Repeat album, MP3 320 kbps	2013-01-27	Rockbox 3.12, volume -10 dB. 8GB SD card, album on internal storage
Clip+, 4GB	11h 50min		Repeat album, FLAC L5	2013-01-26	Rockbox 3.12, volume -10 dB. 8GB SD card, album on internal storage
Clip+, 4GB	13h 43min		Repeat Album, LAME -V2	2011-6-13	1232e06-140927, 8GB SD card, album on SD storage, sd variant 0 by saratoga - baseline to assess battery capacity
Sansa Clip Zip
Clip Zip, 4GB	10h 14min	7h 45min	Repeat album, MP3 -V2	2014-03-17	Rockbox 50f0dd8-140313, no SD, album on internal storage, refurb player by saratoga
Clip Zip, 4GB	13h 35min	7h 45min	Repeat album, MP3 -V2	2014-09-28	Rockbox 515a3c5-140826 + g988 + g989, no SD, album on internal storage, refurb player by saratoga
Clip Zip, 4GB	15h 0min	7h 45min	Repeat album, MP3 -V2	2014-09-28	Rockbox 515a3c5-140826 + g988 + g989 + 1.1v CPU core voltage, no SD, album on internal storage, refurb player by saratoga
Clip Zip, 4GB	19h 55min	7h 45min	Repeat album, MP3 -V2	2016-04-15	Rockbox 6548dc2-160414, no SD, album on internal storage, refurb player by saratoga
Clip Zip, 4GB	22h 40min	7h 45min	Repeat track, MP3 192 kbps (109 MB)	2018-01-23	Rockbox ef373c0-180116, standard settings, no SD (Battery Benchmark Clip Zip)
Clip Zip, 4GB	20h 50min	???	Repeat tracks, MP3 320(44k) 160 kbps(48k) (499 MB)	2022-03-24	Rockbox 822b16b1c6-220323, standard settings, no SD (Battery Benchmark Clip Zip)
Sansa Connect
Connect, 4GB	7h 31min	10h 11min	Repeat Album, WMA (100.7 MB)	2011-11-29	SVN r31089M. Playback from SD card. Added aditional udelay in avr's spi_txrx. Dangerous voltage since 31373 is 5%, omit time for 4%-0%.
Connect, 4GB	8h 20min	10h 11min	Repeat Album, WMA (100.7 MB)	2011-12-16	SVN r31323. Playback from SD card.
Connect, 4GB	8h 37min	10h 11min	Repeat Album, WMA (100.7 MB)	2011-12-18	SVN r31352m. Playback from SD card. Changes were later committed as r31357 and r31358. Dangerous voltage since 31373 is 5%, omit time for 4%-0%.
Connect, 4GB	9h 2min	10h 11min	Repeat Album, WMA (100.7 MB)	2011-12-19	SVN r31360m. Playback from SD card. Changes were later committed as r31373
Connect, 4GB	9h 19min	10h 11min	Repeat Album, WMA (100.7 MB)	2011-12-22	SVN r31394m. Playback from SD card. Changes were later committed as r31404
Sansa Fuze+
Sansa Fuze+	10h 48min	?	Repeat 7 identical pinknoise's files, MP3 CBR 256 kbps (128.2 MB)	2011-12-14	SVN r31210M-111211 + backtrace patch. Playback internal storage
Sansa Fuze+	16h 22min	?	Repeat playlist (100+ tracks), MP3 CBR ~192 kbps (700 MB)	2012-08-29	GIT 53566c0M-120829
Sansa Fuze+	17h 21min	?	Repeat playlist vorbis vbr ~90kbps, no earphones	2013-01-12	git 2ef7a54-130111
Sansa Fuze+	43h 26min	?	Repeat playlist MP3 ~90kbps, no earphones, patches disable touchpad while locked, test performed with locked player	2013-27-07	git 9faabb9 + g#525 + g#523 + g#526

Additional observation

Sansa clip+ (8GB) - OF charging and discharging borders range from ~4.15v (fully charged) to ~3.3v (OF won't boot anymore with a battery low shutdown screen) - voltages are from the battery debug menu. With USB attached, the voltages shown in rockbox are assumingly not the real values of the battery. (r25003) (JuliaBrunenberg - 2010-03-04)

Battery discharge profile

Generated from C240v2 battery bench. Used

  sed -e 's@^[0-9]\+:[0-9]\+:[0-9]\+, *\([0-9]\+\), *[0-9]\+%, *[0-9]\+:[0-9]\+, *\([0-9]\+\),.*@\1 \2@'

to preprocess the battery bench output for gnuplot.

Gnuplot command:

set ylabel 'mV'
set xlabel '%'
plot 'c240v2_battery_run1.data' using (100*(33366-$1)/33366):2 title 'c240v2 bench run 1, 9h16m', 'c240v2_battery_run2.data' using (100*(34775-$1)/34775):2 title 'c240v2 bench run 2, 9h39m', 'c240v2_battery_calibration.data' using 1:2 title 'calibration from powermgmt-c240v2.c r25540', 'c240v2_battery_new_calibration.data' using 1:2 title 'new calibration'

• battery_bench_v2Fuze_CorrectBacklightSettings.txt: battery_bench_v2Fuze_CorrectBacklightSettings.txt

• battery_bench_Clip_8-22-10.txt: Battery Bench for Clip+, LAME MP3 3.98.4 V0

• fuzev1_battery_bench_371.txt: Fuze v1, repeated album MP3 VBR, ~270kbps

• battery_bench_discharge.txt: Fuze+ with 2ef7a54-130111, no earphones, ogg vbr ~90kbps

• battery_bench_charge.txt: Fuze+ charging profile

• battery_bench_f+_touchpad_disable.txt: battery_bench_f+_touchpad_disable.txt