Hello there!!

I was thinking of making my Super trickle nimh charger!! Will charging A batt with C/50 for a whole month cause any overcharge? Will C/100 Cause overcharge?

Thanks in advance for your help!!

 

I suggest visiting the battery university, and getting the datasheets from the manufacturer for the batteries you are using.

 

Overcharging with 1/50 C? I doubt it. I charge my cellphone battery with 1/2 C, doesn't even get warm.

Make sure you don't exceed the maximum charging voltage.

From Wiki: "The significant disadvantage of NiMH batteries is the high rate of self-discharge; NiMH batteries lose up to 20% of their charge on the first day and up to 4% per day of storage after that"

 

I guess you are talking about LI-ion, not NiMH. Accordingg to what i have read, NIMHs are very prone to overcharging, if the charge is not terminated after full charge, unlike liion, Which- the longer you charge, the better.

 

Li-Ion are NOT allowed to be continuously overcharged. They use a very accurate CV charger to prevent overcharging.

 

Sorry for that!!

And now I dont think NIMHs will be oversharged at C/50. Will they??

 

No, C/50 won't overcharge.

C/20 is considered a "trickle charge".

Some batteries, like NiCd, actually respond strangely to a lower charging current. NiMH can go a long time with C/50, though you may not be keeping up with self-discharge depending on battery condition and temperature.

 

Thank you very much!!

It seems quite awkward for me to ONLY ask help, doesnt it? So I was thinking of helping others and share my knowledge.My question is, How will I understand what new threads are being started and what posts are being given by other people in need?? can you please help me??

 

Sorry for that!!

And now I dont think NIMHs will be oversharged at C/50. Will they??

I think C/50 continuous is OK for most NI-MH, maybe as much as C/40 is OK.

 

I guess you are talking about LI-ion, not NiMH.

Yes. But maybe this could be interesting for you:
http://www.vencon.com/index.php?page=support_art2

He says that at C/50 it wouldn't get charged.