Asked — Edited
Resolved by Nomad 6R!
My battery charger is not charging and the green light is always on? I have been able to charge a few times now without issue and this happened just yesterday. Cannot charge my robot now....
Is there anything I can check/do to get this working again?
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Also have you tried unplugging the charger for an hour or so and then trying again?
The charger may still be charging the battery, have to checked the voltage before trying to charge it then after it being on charge for a bit?
I doubt it has anything to do with what your seeing, but something to check.
yes some chargers get really hot.thats why they are in metal cases.
its hard to see cause the pic is not very clear.
the charger was getting very hot. to say warm is not accurate because i could not even hold it when it was charging.
it is not charging the battery which is how i discovered this problem.
will post pic's soon.
in the one pic, the resistor appears discolored. there does not appear to be any burns on the other pics and were just shadows in the previous pic's.
@rich, not sure what you said means, "2S"?
Here's a good guide on everything Lithium Polymer
Oh, man I am going to get crap for this one....
Good on ya' @nomad....
i got two wright this time.
thats two brain cells activated hehe
Tto be honest, buy a new balance charger isn't an ideal solution and it's not actually been determined that the charger isn't charging. It could be a coincidence that the green light is always on but if the battery is under volt it wont charge, this would be a battery problem and a charger problem.
We don't know the voltage of the battery at the moment, we don't know the output voltage of the balance charger either.
The green light remains lit on one of my balance chargers despite it being fully charged and balanced. On occasion it has turned off but it does remain on too. It's not one of my ones from EZ-Robot but it is the exact same design, just rebadged as something else.
Another user may see this topic and instantly think the balance charger is faulty when it may not be.
well i disagree,
using a faulty charger can ruine your batt too.
the learn section tells you how the charger works,red&green led.
and averyone is asumed to read the hole topic.
We also haven't determined if the battery itself has become damaged. A new balance charger for a battery that has been damaged due to under voltage (possibly through the use of a faulty charger) will not solve the issue either.
The whole topic doesn't give this information. Diagnostics is incomplete.
when i discovered the issue, it charged for at least 4 hours. i am worried that the charger will not shut off and possibly ruin the battery (or catch fire) if the charger is faulty.
you have a point there not knowing iff its the batt or the charger.
aldo the green led chouldn lid up when there's no batt connected.
i do have some info about a bad batt.you can see on a charger iff the,
batt is bad.the led on a charger goes out or blink red.
so i gess we bolt earn 1.5 credit
all your robots
good find and good reason to by new one.
Battery voltage is OK, it's not fully charged (8.4v) but it's close. Which is good news.
You should never leave a LiPo battery unattended while it is charging.
The balance charger charges at 1A, divide the battery capacity by the charge rate to find the time required to charge it. A 1600mAH battery charged at 1A would take 1.6 hours to charge.
I'm not sure, but believe that you cannot overcharge a LiPo since the charge voltage is the same as the battery voltage when fully charged. The voltage of the battery therefore cannot increase above the charge voltage. However, as I said I am not 100% sure of this. I will need to look it up (unless someone else chimes in). In the mean time, do timed charges based on the above calculation, check the voltage of the battery when you take it off charge and check it's 8.2-8.4v
i don't know enough about electronics other than putting a voltage meter on batteries to see if they have a charge.
i am worried that it will ruin my battery or worse, cause a fire.
Just to be clear, I should read 8.4v on a fully charged battery and that it should take ~1.6 hours to fully charge the battery. Is that from 0v on the battery or from the 6.6v?
Can I use the charging connector on the bottom of the robot to check the voltage or do I have to pull it out each time?
From around 6.6v however my example above is for a 1600mah battery. EZ-Robot batteries are 1300mAh. It will take about 1 hour 20 minutes to charge (give or take).
Yes you can measure the voltage on the connector. On the connector it's the outside 2 pins for total voltage.
One thing I just remembered though, on first charging Six with the EZ-Robot charger my green light never turned off. Turning the robot on while it was charging fixed this, it's been working fine since. No idea why, not really recommended but shouldn't do any damage if it's only powering it up then turning it off after a few seconds.
I am presently developing and testing scripts for my Inmoov robot.
What could append?
I gess I could make a circuit to automaticly isolate the EZB when it sense a low batterie condition and let the charger do his job, and after bring back the EZB back on line.
Do you have any other sugestion?
I live with it because it is working for the time being and why go through the hassle of return shipping charges and then the wait for another drop shipment from China? No thanks