Vector 3 battery at 2.7 V or cold weather affecting performance?

Former Member over 6 years ago

hi
After using the Vector 3 last 3 weeks only indoor i have taken the bike out for a ride today.Tempeture was around 2 graded Celsius on average and a minimum of 0 Celsius.The course i have done is one i do frequently and the power was low like 20-25 watts for the forst 45 minutes.i have zeroed the powermeter 10 min before the ride and once after 5 min.Power was low bu 20-30 watts in my opinion and it was also reacting slow when i cahenged the pace.after 30 -40!minutes i did a zero again.seems like it was reading only 10-12 watts after the last zero offset.So i check the battery voltage was like 2.6-2.7 .So the Question is was the battery voltage the cause or they weren t adapted to the temperature drift from indoors(16-18 degrees Celsiu)to outdoors 0-2 degrees?

0 t_smit over 6 years ago

i have zeroed the powermeter 10 min before the ride and once after 5 min.

The pedals require about 15 minutes to achieve temperature equilibrium. Doing the calibration five minutes after taking the bike outside is likely to be the cause of your power discrepancy.

The pedals have internal compensation for temperature change and they will track through indoor to outdoor temperature shifts, as long as the zero calibration is done when the system is at equilibrium. It is best to either do the calibration indoors before you take the bike out, or else about 15 to 20 minutes after you take the bike out.

The pedals will work within spec through the entire operating voltage range, even if you get a 'low battery' warning. When the battery voltage gets below the point where the system can work, it shuts down completely.

0 Former Member over 6 years ago

The pedals require about 15 minutes to achieve temperature equilibrium. Doing the calibration five minutes after taking the bike outside is likely to be the cause of your power discrepancy.

The pedals have internal compensation for temperature change and they will track through indoor to outdoor temperature shifts, as long as the zero calibration is done when the system is at equilibrium. It is best to either do the calibration indoors before you take the bike out, or else about 15 to 20 minutes after you take the bike out.

The pedals will work within spec through the entire operating voltage range, even if you get a 'low battery' warning. When the battery voltage gets below the point where the system can work, it shuts down completely.

i have also noticed that they were responding with more delay when i was changing the pace(more than usual)i mean i was accelerating and the numbers for example didnt jump from 190 to 230-240 as usual they were more like 196-200 i mean only 10-12 watts when i was changing the pace.that was the first thing that i observed .then after 40 min in the ride i stop zero again and they seem to work like 15-20 watts higher.

0 Inthequantum over 6 years ago

The pedals require about 15 minutes to achieve temperature equilibrium. Doing the calibration five minutes after taking the bike outside is likely to be the cause of your power discrepancy.

The pedals have internal compensation for temperature change and they will track through indoor to outdoor temperature shifts, as long as the zero calibration is done when the system is at equilibrium. It is best to either do the calibration indoors before you take the bike out, or else about 15 to 20 minutes after you take the bike out.

The pedals will work within spec through the entire operating voltage range, even if you get a 'low battery' warning. When the battery voltage gets below the point where the system can work, it shuts down completely.

This is interesting. I have noticed that when I check my vector 3 pedal battery status through Garmin connect on my phone it shows a full battery and the “OK” status. I can go ride outside where the temps are between 35-50 degrees F and come back and battery can be red and show “LOW” status. After awhile of being indoors it can return to the “OK” status again. Is this normal behavior and how can I really tell if my batteries need to be replaced? How is everyone measuring the voltage of the battery? Not really familiar with that.

Any advice would be sincerely appreciated. Thank you.

0 Former Member over 6 years ago

This is interesting. I have noticed that when I check my vector 3 pedal battery status through Garmin connect on my phone it shows a full battery and the “OK” status. I can go ride outside where the temps are between 35-50 degrees F and come back and battery can be red and show “LOW” status. After awhile of being indoors it can return to the “OK” status again. Is this normal behavior and how can I really tell if my batteries need to be replaced? How is everyone measuring the voltage of the battery? Not really familiar with that.

Any advice would be sincerely appreciated. Thank you.

Hey I posted about the LOW to GOOD here on a previous post. It's the third post down from the top.

https://forums.garmin.com/forum/into-sports/cycling/vector-3/1395889-battery-status-reporting

Hope this answers your question Inthequantum

0 Former Member over 6 years ago

i m not interested in their voltage and low battery message ,i m more in their behavior in the situation i describe about readings and a delay in displaying power under short surges and the power under surges only moved like 8-10 watts from 190 to 196-198 under short accelerations which is strange in my opinion.this situations was when i take the bike out from indoor and calibration done after 10 minutes ,so the change in temperature could have been the culrpit

0 t_smit over 6 years ago

i m more in their behavior in the situation i describe about readings and a delay in displaying power under short surges and the power under surges only moved like 8-10 watts from 190 to 196-198 under short accelerations which is strange in my opinion.

This is more likely a situation where the head unit maybe missed receipt of some messages just as you were making the power surge. Also, if you display (for instance) 3 second averaged power, then that will cause a corresponding delay as well as smoothing out the peaks of your power output surge. A mis-calibration of the zero offset (or being out in cool temperatures) would not cause a delay in calculation or display of the output.

0 Inthequantum over 6 years ago

Hey I posted about the LOW to GOOD here on a previous post. It's the third post down from the top.

https://forums.garmin.com/forum/into-sports/cycling/vector-3/1395889-battery-status-reporting

Hope this answers your question Inthequantum

Thank you aawhyte!