Below is the event log generated by DatCon. You can see the LED color was warning you about some type of battery warning when the battery was at 58%. I don't see anything odd about the battery data recorded in the DAT log. Did you raise the low and critically low battery levels in DJI GO (like Fat Daddy mentioned above)?
-12.222 : 6566 : 338 [Ctrl<1>] REQ_RC_NORMAL ATTI_HOLD ctrl_gps_atti
-5.722 : 10466 : 663 41.3136918 -75.3177318 420.61 First Home Point
-5.722 : 10466 : 663 [whitelist]invalid flash key
-5.722 : 10466 : 663 [whitelist]>test data injected
-5.720 : 10467 : 663 [LED] changed: set home
-5.702 : 10478 : 664 airport limit data need update[1095863098][-1073741824]
-4.222 : 11366 : 738 [LED] changed: temperature not ready when startup
-1.342 : 13094 : 882 [LED] changed: normal led
-.022 : 13886 : 948 [M.Start]REQ_RC_NORMAL
-.022 : 13886 : 948 [Ctrl<2>] REQ_RC_COMMAND ENGINE_START ctrl_engine_start
-.002 : 13898 : 949 [IOC.CL ] 84.1 Degree
-.002 : 13898 : 949 [TO.ALT ] 400.604156
-.002 : 13898 : 949 41.3136923 -75.3177325 420.60 Home Point
.198 : 14018 : 959 [LED] changed: set home
1.698 : 14918 : 1034 [LED] changed: normal led
1.998 : 15098 : 1049 [Ctrl<2>] REQ_RC_COMMAND ASST_TAKEOFF_HOLD ctrl_asst_takeoff
2.798 : 15578 : 1089 CTRL reset all by assisted takeoff finish
2.818 : 15590 : 1090 [Ctrl<1>] REQ_RC_NORMAL ATTI_HOLD ctrl_gps_atti
3.757 : 16153 : 1136 Eeprom write offset:330
9.757 : 19753 : 1436 Eeprom write offset:330
14.338 : 22502 : 1666 airport limit data need update[1095863098][-536870912]
34.378 : 34526 : 2668 airport limit data need update[1095863098][-536870912]
51.758 : 44954 : 3537 CTRL reset all by rc mode switch
51.778 : 44966 : 3538 [Ctrl<1>] REQ_RC_NORMAL ATTI ctrl_atti
51.798 : 44978 : 3539 CTRL reset all by rc mode switch
51.798 : 44978 : 3539 [Ctrl<1>] REQ_RC_NORMAL ATTI_HOLD ctrl_gps_atti
54.418 : 46550 : 3670 airport limit data need update[1095863099][0]
74.458 : 58574 : 4672 airport limit data need update[1095863098][-536870912]
74.458 : 58574 : 4672 [fly_limit]set lenOfData 0 because of 20KM and no App Data Sent!
88.480 : 66987 : 5373 received on/off 1 from app
88.480 : 66987 : 5373 ack on/off 0 to app
88.700 : 67119 : 5384 Follow Mission: receive followme mission from app
88.700 : 67119 : 5384 Follow Mission: follow mode 0
88.700 : 67119 : 5384 Follow Mission: yaw_mode 1
88.700 : 67119 : 5384 Follow Mission: init_lati 0.721
88.700 : 67119 : 5384 Follow Mission: init_long -1.315
88.700 : 67119 : 5384 Follow Mission: init_alti 0.000
88.700 : 67119 : 5384 Follow Mission: init_angl 0.000
88.700 : 67119 : 5384 Follow Mission: sensitivity 0
88.700 : 67119 : 5384 Follow Mission: is_android 2
88.700 : 67119 : 5384 [Follow_ME]: Init success app date source : 2
88.700 : 67119 : 5384 [FOLLOW_ME]mission start 1
88.700 : 67119 : 5384 Follow Mission: ack followme start 0 to app
88.718 : 67130 : 5385 [Ctrl<3>] REQ_NAVI_MISSION NAVI_FOLLOW_MISSION ctrl_navi_follow_me_mission
91.058 : 68534 : 5502 [FOLLOW_ME]init gpitch -58.000,gdist offset 74.720,d2ph 3.290,d2prt 78.010
91.058 : 68534 : 5502 [FOLLOW_ME] change to FOLLOW_MOVING
94.498 : 70598 : 5674 airport limit data need update[1095863099][0]
114.538 : 82622 : 6676 airport limit data need update[1095863098][-536870912]
126.158 : 89594 : 7257 CTRL reset all by rc mode switch
126.158 : 89594 : 7257 CTRL reset all by APP.mission.follow.no.mission
126.178 : 89606 : 7258 CTRL reset all by rc mode switch
126.178 : 89606 : 7258 [Ctrl<1>] REQ_RC_NORMAL ATTI_HOLD ctrl_gps_atti
134.578 : 94646 : 7678 airport limit data need update[1095863098][-536870912]
149.638 : 103682 : 8431 CTRL reset all by rc mode switch
154.618 : 106670 : 8680 airport limit data need update[1095863098][-536870912]
156.998 : 108098 : 8799 CTRL reset all by rc mode switch
156.998 : 108098 : 8799 [Ctrl<1>] REQ_RC_NORMAL ATTI ctrl_atti
157.158 : 108194 : 8807 CTRL reset all by rc mode switch
157.158 : 108194 : 8807 [Ctrl<1>] REQ_RC_NORMAL ATTI_HOLD ctrl_gps_atti
174.658 : 118694 : 9682 airport limit data need update[1095863098][-536870912]
187.218 : 126230 : 10310 CTRL reset all by rc mode switch
187.218 : 126230 : 10310 [Ctrl<1>] REQ_RC_NORMAL ATTI ctrl_atti
187.238 : 126242 : 10311 CTRL reset all by rc mode switch
187.238 : 126242 : 10311 [Ctrl<1>] REQ_RC_NORMAL ATTI_HOLD ctrl_gps_atti
193.320 : 129891 : 10615 received on/off 1 from app
193.320 : 129891 : 10615 ack on/off 0 to app
193.458 : 129974 : 10622 Follow Mission: receive followme mission from app
193.460 : 129975 : 10622 Follow Mission: follow mode 0
193.460 : 129975 : 10622 Follow Mission: yaw_mode 1
193.460 : 129975 : 10622 Follow Mission: init_lati 0.721
193.460 : 129975 : 10622 Follow Mission: init_long -1.315
193.460 : 129975 : 10622 Follow Mission: init_alti 0.000
193.460 : 129975 : 10622 Follow Mission: init_angl 0.000
193.460 : 129975 : 10622 Follow Mission: sensitivity 0
193.460 : 129975 : 10622 Follow Mission: is_android 2
193.460 : 129975 : 10622 [Follow_ME]: Init success app date source : 2
193.460 : 129975 : 10622 [FOLLOW_ME]mission start 1
193.460 : 129975 : 10622 Follow Mission: ack followme start 0 to app
193.478 : 129986 : 10623 [Ctrl<3>] REQ_NAVI_MISSION NAVI_FOLLOW_MISSION ctrl_navi_follow_me_mission
194.698 : 130718 : 10684 airport limit data need update[1095863099][0]
195.798 : 131378 : 10739 [FOLLOW_ME]init gpitch -54.800,gdist offset 67.737,d2ph 20.028,d2prt 87.765
195.798 : 131378 : 10739 [FOLLOW_ME] change to FOLLOW_MOVING
214.738 : 142742 : 11686 airport limit data need update[1095863094][1610612736]
234.778 : 154766 : 12688 airport limit data need update[1095863122][1073741824]
254.818 : 166790 : 13690 airport limit data need update[1095863173][1073741824]
270.700 : 176319 : 14484 [FOLLOW_ME]mission ERROR: target pos jump!
270.900 : 176439 : 14494 [FOLLOW_ME]mission ERROR: target pos jump!
271.300 : 176679 : 14514 [FOLLOW_ME]mission ERROR: target pos jump!
274.858 : 178814 : 14692 airport limit data need update[1095863221][-2147483648]
284.500 : 184599 : 15174 [FOLLOW_ME]mission ERROR: target pos jump!
284.600 : 184659 : 15179 [FOLLOW_ME]mission ERROR: target pos jump!
284.700 : 184719 : 15184 [FOLLOW_ME]mission ERROR: target pos jump!
284.780 : 184767 : 15188 [FOLLOW_ME]mission ERROR: target pos jump!
284.900 : 184839 : 15194 [FOLLOW_ME]mission ERROR: target pos jump!
285.020 : 184911 : 15200 [FOLLOW_ME]mission ERROR: target pos jump!
285.080 : 184947 : 15203 [FOLLOW_ME]mission ERROR: target pos jump!
285.180 : 185007 : 15208 [FOLLOW_ME]mission ERROR: target pos jump!
285.300 : 185079 : 15214 [FOLLOW_ME]mission ERROR: target pos jump!
294.898 : 190838 : 15694 airport limit data need update[1095863248][-536870912]
314.938 : 202862 : 16696 airport limit data need update[1095863288][1610612736]
334.978 : 214886 : 17698 airport limit data need update[1095863333][0]
355.018 : 226910 : 18700 airport limit data need update[1095863372][-1073741824]
368.380 : 234927 : 19368 [FOLLOW_ME]mission ERROR: target pos jump!
368.500 : 234999 : 19374 [FOLLOW_ME]mission ERROR: target pos jump!
368.700 : 235119 : 19384 [FOLLOW_ME]mission ERROR: target pos jump!
368.800 : 235179 : 19389 [FOLLOW_ME]mission ERROR: target pos jump!
368.880 : 235227 : 19393 [FOLLOW_ME]mission ERROR: target pos jump!
369.020 : 235311 : 19400 [FOLLOW_ME]mission ERROR: target pos jump!
369.100 : 235359 : 19404 [FOLLOW_ME]mission ERROR: target pos jump!
369.200 : 235419 : 19409 [FOLLOW_ME]mission ERROR: target pos jump!
369.280 : 235467 : 19413 [FOLLOW_ME]mission ERROR: target pos jump!
375.058 : 238934 : 19702 airport limit data need update[1095863391][-1610612736]
395.098 : 250958 : 20704 airport limit data need update[1095863434][1610612736]
415.138 : 262982 : 21706 airport limit data need update[1095863472][536870912]
435.178 : 275006 : 22708 airport limit data need update[1095863511][1610612736]
455.218 : 287030 : 23710 airport limit data need update[1095863560][536870912]
475.258 : 299054 : 24712 airport limit data need update[1095863610][-1610612736]
495.298 : 311078 : 25714 airport limit data need update[1095863656][1073741824]
515.338 : 323102 : 26716 airport limit data need update[1095863709][-2147483648]
535.378 : 335126 : 27718 airport limit data need update[1095863752][-2147483648]
555.418 : 347150 : 28720 airport limit data need update[1095863739][536870912]
575.458 : 359174 : 29722 airport limit data need update[1095863706][-1610612736]
576.118 : 359570 : 29755 [LED] changed: battery warning!
595.498 : 371198 : 30724 airport limit data need update[1095863676][1610612736]
615.538 : 383222 : 31726 airport limit data need update[1095863657][-1073741824]
621.378 : 386726 : 32018 CTRL reset all by rc mode switch
621.378 : 386726 : 32018 CTRL reset all by APP.mission.follow.no.mission
621.398 : 386738 : 32019 [Ctrl<1>] REQ_RC_NORMAL ATTI ctrl_atti
621.438 : 386762 : 32021 CTRL reset all by rc mode switch
621.438 : 386762 : 32021 [Ctrl<1>] REQ_RC_NORMAL ATTI_HOLD ctrl_gps_atti
634.998 : 394898 : 32699 CTRL reset all by rc mode switch
634.998 : 394898 : 32699 [Ctrl<1>] REQ_RC_NORMAL ATTI ctrl_atti
635.018 : 394910 : 32700 CTRL reset all by rc mode switch
635.018 : 394910 : 32700 [Ctrl<1>] REQ_RC_NORMAL ATTI_HOLD ctrl_gps_atti
635.438 : 395162 : 32721 CTRL reset all by rc mode switch
635.438 : 395162 : 32721 [Ctrl<1>] REQ_RC_NORMAL ATTI ctrl_atti
635.458 : 395174 : 32722 CTRL reset all by rc mode switch
635.458 : 395174 : 32722 [Ctrl<1>] REQ_RC_NORMAL ATTI_HOLD ctrl_gps_atti
635.578 : 395246 : 32728 airport limit data need update[1095863660][0]
655.618 : 407270 : 33730 airport limit data need update[1095863661][-536870912]
675.658 : 419294 : 34732 airport limit data need update[1095863661][1610612736]
683.918 : 424250 : 35145 CTRL reset all by rc mode switch
683.918 : 424250 : 35145 [Ctrl<1>] REQ_RC_NORMAL ATTI ctrl_atti
683.958 : 424274 : 35147 CTRL reset all by rc mode switch
683.958 : 424274 : 35147 [Ctrl<1>] REQ_RC_NORMAL ATTI_HOLD ctrl_gps_atti
684.918 : 424850 : 35195 CTRL reset all by rc mode switch
684.918 : 424850 : 35195 [Ctrl<1>] REQ_RC_NORMAL ATTI ctrl_atti
685.078 : 424946 : 35203 CTRL reset all by rc mode switch
685.078 : 424946 : 35203 [Ctrl<1>] REQ_RC_NORMAL ATTI_HOLD ctrl_gps_atti
695.698 : 431318 : 35734 airport limit data need update[1095863660][-1073741824]
703.258 : 435854 : 36112 [M. Stop]landing.RC_Thr
703.258 : 435854 : 36112 Motor Start 1 Total 703.28
703.258 : 435854 : 36112 CTRL reset all by motor stopped