Is it normal that a new battery is drained after 7weeks below 8V? We changed the battery after a 38001 error end January and this worked fine, but the project was put on hold for some weeks, so we didn't fire-up the robot during that period and now we have the battery showing 7,2V. Or can there be another reasing why the battery drained that quick?
Battery serial measurement board drained after 7 weeks
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Pactac -
March 25, 2022 at 8:32 AM -
Thread is Unresolved
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Is it normal that a new battery is drained after 7weeks below 8V? We changed the battery after a 38001 error end January and this worked fine, but the project was put on hold for some weeks, so we didn't fire-up the robot during that period and now we have the battery showing 7,2V. Or can there be another reasing why the battery drained that quick?
7,2V battery - 3HAC044075-001? Those have about 7,35-7,4V when new from stock (measured dozens over the years), I think that over 8V would not be good.
If you'll have to shut the robot down for a few weeks it could be good idea to use battery shutdown service routine (see operating manual), to save the battery from draining <- reduces the current consumption.
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There are numerous reasons. Can help with this but need more information:
Controller model
Robot model
Battery location
Battery part # if you have it or even a picture
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7 weeks without power still seems too short for a brand new battery. If it is an ABB bought battery, we should assume it to be built with quality cells. New battery packs would measure 11.2V with a high impedance DMM.
I've had corrosion on the SMB causing the battery to drain after 2-3 months and it was only off at night & weekends. Check the unit for any foreign debris or corrosion. Could also be a faulty part on the SMB causing it to draw more current. Most are over 20yrs old by now.
The battery could have been faulty or diminished if it was dropped somewhere in it's life.
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Thanks a lot for the replies, I will check for any corrosion. This could be indeed the reason. I have the impression that the robot in the past worked in a corrosion sensitive environment, looking at the painting coming lose. I bought the battery via a certified ABB parts seller and I checked the voltage before connecting it to the board. And it was indeed 11.2V.
There exists also a possibility to buy a rechargeable battery, but this is not standard. But Is the battery than charged via the measuring board? Or is this a not done topic?
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Thanks a lot for the replies, I will check for any corrosion. This could be indeed the reason. I have the impression that the robot in the past worked in a corrosion sensitive environment, looking at the painting coming lose. I bought the battery via a certified ABB parts seller and I checked the voltage before connecting it to the board. And it was indeed 11.2V.
There exists also a possibility to buy a rechargeable battery, but this is not standard. But Is the battery than charged via the measuring board? Or is this a not done topic?
If that battery pack on the picture is an OG ABB part with the black 2-pole connector that it should have and the SMB is what it seems to be...That generation of SMB doesn't have a charger anymore as the previous one did, that had the bigger battery pack with 6 cells and orange 2-pole connector. Skooter can correct me, if I'm wrong.