In March 2014 I purchased a pack of 8 new eneloop XXs (4HR‐3UWX) from "large online retailer" (before Panasonic rebranding).
I have been using my Maha MH-C9000 to charge them at 1000ma for the past 16 months. I use all 8 batteries and then recharge them, so they are getting even wear.
Within the last week, my C9000 reported 'High' on 4 batteries. I estimate they have been charged only 60-70 times (they should handle 500 charges). The ones that are still "OK" are looking pretty tired in my flashlight fresh off the charger.
I tried C9000's "Refresh Analyze" - and as last resort "Break in", both to no avail (unit says "High" for failed batteries, ~1850-1900mAH for surviving ones).
Is it possible I charged them too quickly @1000mA? Thats less than 0.5C so I thought it would be OK. But the Panasonic BQ-CC17 charges at 300mA.
Thanks
I have been using my Maha MH-C9000 to charge them at 1000ma for the past 16 months. I use all 8 batteries and then recharge them, so they are getting even wear.
Within the last week, my C9000 reported 'High' on 4 batteries. I estimate they have been charged only 60-70 times (they should handle 500 charges). The ones that are still "OK" are looking pretty tired in my flashlight fresh off the charger.
I tried C9000's "Refresh Analyze" - and as last resort "Break in", both to no avail (unit says "High" for failed batteries, ~1850-1900mAH for surviving ones).
Is it possible I charged them too quickly @1000mA? Thats less than 0.5C so I thought it would be OK. But the Panasonic BQ-CC17 charges at 300mA.
Thanks