Battery question???? XXXX UPDATE XXXXX
bought 2 new batteries for my mobility pride scooter, 12 V U1AGM 35AMP BATLIQ1017..... INSTALLED THEM TODAY and before charging them they tested at 12.7 v.. put the scooter charger on and both batteri...
Forum Discussion
Thanks for the update
A higher internal resistance would explain the imbalance of 14.8V and 15.2V while charging. The battery measuring 15.2V would have a higher internal resistance. Maybe that's what they found troubling.
Jocelyn - Take the following measurements once you have the new battery installed:
Voltage of each bat and combined voltage of both bat's before you start initial charge. Should be ~ 12.7V each and 25.4V combined
Same measurements as above at the beginning of the charge. Of course the voltage measurements will be higher. The individual bat measurements may not be identical but the total should add up the measured combined voltage.
Same as above after a 30 minute charge. The individual measurements should be getting close to being the same voltage, 14.x
At some point you should expect each battery to measure 15.0V and the combined voltage to measure 30.0V. From your previous measurements it appears either your charger outputs 30V or your voltmeter is a little off.
On Edit: Now my curiosity is kicking in.
Before you replace your battery, charge what you have again to see if you still measure 14.8V and 15.2V. I'm curious to see if they balanced out after using them for a short time. You may find that they measure the same now.
A higher internal resistance would explain the imbalance of 14.8V and 15.2V while charging. The battery measuring 15.2V would have a higher internal resistance. Maybe that's what they found troubling.
Jocelyn - Take the following measurements once you have the new battery installed:
Voltage of each bat and combined voltage of both bat's before you start initial charge. Should be ~ 12.7V each and 25.4V combined
Same measurements as above at the beginning of the charge. Of course the voltage measurements will be higher. The individual bat measurements may not be identical but the total should add up the measured combined voltage.
Same as above after a 30 minute charge. The individual measurements should be getting close to being the same voltage, 14.x
At some point you should expect each battery to measure 15.0V and the combined voltage to measure 30.0V. From your previous measurements it appears either your charger outputs 30V or your voltmeter is a little off.
On Edit: Now my curiosity is kicking in.
Before you replace your battery, charge what you have again to see if you still measure 14.8V and 15.2V. I'm curious to see if they balanced out after using them for a short time. You may find that they measure the same now.
