Newbie Help please, Longer run time?

Hello everyone, 

I am new to this whole scene and have recently finished an electric skateboard build. it works great but i feel like i can get more run time out of my batteries.

what i am currently running is 2x 5S 5.0Ah batteries in series (10S 5.0ah) through a VESC 4.12 board and into a Leafmotor 36v 750W ebike hub motor.

I have done everything to my knowledge thus far in working with Vesc Tool to get my board running, but i worry that i could damage some components because i dont know a whole lot about electronics unfortunately. Currently i can only get about 15 minutes of run time out of my board before it shuts down. im not sure if the vesc is over heating, or if something else is going on. i checked my batteries after the board shut down and the cells were at 3.8v each. i have the vesc programmed to stop when the batteries reach 3.6v.

I cant find another way one here to post my vesc tool XML file so il copy and paste.. any help is greatly appreciated

<?xml version="1.0" encoding="UTF-8"?>

-<MCConfiguration>

<pwm_mode>1</pwm_mode>

<comm_mode>0</comm_mode>

<motor_type>2</motor_type>

<sensor_mode>0</sensor_mode>

<l_current_max>49.3</l_current_max>

<l_current_min>-49.3</l_current_min>

<l_in_current_max>99</l_in_current_max>

<l_in_current_min>-60</l_in_current_min>

<l_abs_current_max>130</l_abs_current_max>

<l_min_erpm>-60000</l_min_erpm>

<l_max_erpm>60000</l_max_erpm>

<l_erpm_start>0.8</l_erpm_start>

<l_max_erpm_fbrake>300</l_max_erpm_fbrake>

<l_max_erpm_fbrake_cc>1500</l_max_erpm_fbrake_cc>

<l_min_vin>8</l_min_vin>

<l_max_vin>42</l_max_vin>

<l_battery_cut_start>34</l_battery_cut_start>

<l_battery_cut_end>31</l_battery_cut_end>

<l_slow_abs_current>1</l_slow_abs_current>

<l_temp_fet_start>85</l_temp_fet_start>

<l_temp_fet_end>100</l_temp_fet_end>

<l_temp_motor_start>85</l_temp_motor_start>

<l_temp_motor_end>100</l_temp_motor_end>

<l_temp_accel_dec>0.15</l_temp_accel_dec>

<l_min_duty>0.005</l_min_duty>

<l_max_duty>0.95</l_max_duty>

<l_watt_max>1.5e+06</l_watt_max>

<l_watt_min>-1.5e+06</l_watt_min>

<l_current_max_scale>1</l_current_max_scale>

<l_current_min_scale>1</l_current_min_scale>

<sl_min_erpm>150</sl_min_erpm>

<sl_min_erpm_cycle_int_limit>1100</sl_min_erpm_cycle_int_limit>

<sl_max_fullbreak_current_dir_change>10</sl_max_fullbreak_current_dir_change>

<sl_cycle_int_limit>62</sl_cycle_int_limit>

<sl_phase_advance_at_br>0.8</sl_phase_advance_at_br>

<sl_cycle_int_rpm_br>80000</sl_cycle_int_rpm_br>

<sl_bemf_coupling_k>600</sl_bemf_coupling_k>

<hall_table__0>-1</hall_table__0>

<hall_table__1>1</hall_table__1>

<hall_table__2>3</hall_table__2>

<hall_table__3>2</hall_table__3>

<hall_table__4>5</hall_table__4>

<hall_table__5>6</hall_table__5>

<hall_table__6>4</hall_table__6>

<hall_table__7>-1</hall_table__7>

<hall_sl_erpm>2000</hall_sl_erpm>

<foc_current_kp>0.0439</foc_current_kp>

<foc_current_ki>30.86</foc_current_ki>

<foc_f_sw>25000</foc_f_sw>

<foc_dt_us>0.12</foc_dt_us>

<foc_encoder_inverted>0</foc_encoder_inverted>

<foc_encoder_offset>180</foc_encoder_offset>

<foc_encoder_ratio>7</foc_encoder_ratio>

<foc_encoder_sin_gain>1</foc_encoder_sin_gain>

<foc_encoder_cos_gain>1</foc_encoder_cos_gain>

<foc_encoder_sin_offset>1.65</foc_encoder_sin_offset>

<foc_encoder_cos_offset>1.65</foc_encoder_cos_offset>

<foc_encoder_sincos_filter_constant>0.5</foc_encoder_sincos_filter_constant>

<foc_sensor_mode>0</foc_sensor_mode>

<foc_pll_kp>2000</foc_pll_kp>

<foc_pll_ki>30000</foc_pll_ki>

<foc_motor_l>4.39e-05</foc_motor_l>

<foc_motor_r>0.0309</foc_motor_r>

<foc_motor_flux_linkage>0.016806</foc_motor_flux_linkage>

<foc_observer_gain>1.15e+06</foc_observer_gain>

<foc_observer_gain_slow>0.3</foc_observer_gain_slow>

<foc_duty_dowmramp_kp>10</foc_duty_dowmramp_kp>

<foc_duty_dowmramp_ki>200</foc_duty_dowmramp_ki>

<foc_openloop_rpm>300</foc_openloop_rpm>

<foc_sl_openloop_hyst>0.1</foc_sl_openloop_hyst>

<foc_sl_openloop_time>0.1</foc_sl_openloop_time>

<foc_sl_d_current_duty>0</foc_sl_d_current_duty>

<foc_sl_d_current_factor>0</foc_sl_d_current_factor>

<foc_hall_table__0>255</foc_hall_table__0>

<foc_hall_table__1>255</foc_hall_table__1>

<foc_hall_table__2>255</foc_hall_table__2>

<foc_hall_table__3>255</foc_hall_table__3>

<foc_hall_table__4>255</foc_hall_table__4>

<foc_hall_table__5>255</foc_hall_table__5>

<foc_hall_table__6>255</foc_hall_table__6>

<foc_hall_table__7>255</foc_hall_table__7>

<foc_sl_erpm>2000</foc_sl_erpm>

<foc_sample_v0_v7>0</foc_sample_v0_v7>

<foc_sample_high_current>0</foc_sample_high_current>

<foc_sat_comp>0</foc_sat_comp>

<foc_temp_comp>0</foc_temp_comp>

<foc_temp_comp_base_temp>25</foc_temp_comp_base_temp>

<foc_current_filter_const>0.1</foc_current_filter_const>

<foc_cc_decoupling>2</foc_cc_decoupling>

<foc_observer_type>0</foc_observer_type>

<foc_hfi_voltage_start>20</foc_hfi_voltage_start>

<foc_hfi_voltage_run>4</foc_hfi_voltage_run>

<foc_hfi_voltage_max>10</foc_hfi_voltage_max>

<foc_sl_erpm_hfi>2000</foc_sl_erpm_hfi>

<foc_hfi_start_samples>65</foc_hfi_start_samples>

<foc_hfi_obs_ovr_sec>0.001</foc_hfi_obs_ovr_sec>

<foc_hfi_samples>1</foc_hfi_samples>

<gpd_buffer_notify_left>200</gpd_buffer_notify_left>

<gpd_buffer_interpol>0</gpd_buffer_interpol>

<gpd_current_filter_const>0.1</gpd_current_filter_const>

<gpd_current_kp>0.03</gpd_current_kp>

<gpd_current_ki>50</gpd_current_ki>

<s_pid_kp>0.004</s_pid_kp>

<s_pid_ki>0.004</s_pid_ki>

<s_pid_kd>0.0001</s_pid_kd>

<s_pid_kd_filter>0.2</s_pid_kd_filter>

<s_pid_min_erpm>900</s_pid_min_erpm>

<s_pid_allow_braking>1</s_pid_allow_braking>

<p_pid_kp>0.03</p_pid_kp>

<p_pid_ki>0</p_pid_ki>

<p_pid_kd>0.0004</p_pid_kd>

<p_pid_kd_filter>0.2</p_pid_kd_filter>

<p_pid_ang_div>1</p_pid_ang_div>

<cc_startup_boost_duty>0.01</cc_startup_boost_duty>

<cc_min_current>0.05</cc_min_current>

<cc_gain>0.0046</cc_gain>

<cc_ramp_step_max>0.04</cc_ramp_step_max>

<m_fault_stop_time_ms>500</m_fault_stop_time_ms>

<m_duty_ramp_step>0.02</m_duty_ramp_step>

<m_current_backoff_gain>0.5</m_current_backoff_gain>

<m_encoder_counts>8192</m_encoder_counts>

<m_sensor_port_mode>0</m_sensor_port_mode>

<m_invert_direction>0</m_invert_direction>

<m_drv8301_oc_mode>0</m_drv8301_oc_mode>

<m_drv8301_oc_adj>16</m_drv8301_oc_adj>

<m_bldc_f_sw_min>3000</m_bldc_f_sw_min>

<m_bldc_f_sw_max>35000</m_bldc_f_sw_max>

<m_dc_f_sw>25000</m_dc_f_sw>

<m_ntc_motor_beta>3380</m_ntc_motor_beta>

<m_out_aux_mode>0</m_out_aux_mode>

<m_motor_temp_sens_type>0</m_motor_temp_sens_type>

<m_ptc_motor_coeff>0.61</m_ptc_motor_coeff>

<si_motor_poles>46</si_motor_poles>

<si_gear_ratio>1</si_gear_ratio>

<si_wheel_diameter>0.355</si_wheel_diameter>

<si_battery_type>0</si_battery_type>

<si_battery_cells>10</si_battery_cells>

<si_battery_ah>5</si_battery_ah>

<motor_brand>Unnamed</motor_brand>

<motor_model>Not Specified</motor_model>

<motor_weight>0</motor_weight>

<motor_poles>14</motor_poles>

<motor_sensor_type>0</motor_sensor_type>

<motor_description><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0//EN" "http://www.w3.org/TR/REC-html40/strict.dtd"> <html><head><meta name="qrichtext" content="1" /><style type="text/css"> p, li { white-space: pre-wrap; } </style></head><body style=" font-family:'DejaVu Sans'; font-size:11pt; font-weight:400; font-style:normal;"> <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">A motor description can be edited here.</p></body></html></motor_description>

<motor_loss_torque>0.03</motor_loss_torque>

<motor_quality_bearings>0</motor_quality_bearings>

<motor_quality_magnets>0</motor_quality_magnets>

<motor_quality_construction>0</motor_quality_construction>

<motor_quality_description><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0//EN" "http://www.w3.org/TR/REC-html40/strict.dtd"> <html><head><meta name="qrichtext" content="1" /><style type="text/css"> p, li { white-space: pre-wrap; } </style></head><body style=" font-family:'DejaVu Sans'; font-size:11pt; font-weight:400; font-style:normal;"> <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">Some comments about the motor quality. Images can be added as well.</p></body></html></motor_quality_description>

</MCConfiguration>