HighlanderNorth
Flashlight Enthusiast
>>>>>>>Ok. After returning to client's home, charging all 18650's on his new Nitecore i4 charger again, then testing the battery voltage with MY multimeter, I discovered that the charger WAS properly charging them all to around 4.21v. But when I tested them with the client's DMM as I'd done before, it was still reading them at 4.11 to 4.14v. So after all, the problem wasn't with the new charger, it was with the DMM that was bought at Lowe's just 1 month ago. I didn't expect that would be the cause because it had worked fine at testing continuity of the MAF sensor in his Buick Park Ave, and a few other non-voltage related applications. Apparently it's just not all that accurate when it comes to voltage! But I'm still happy to report that my $12 DMM that I bought 5 years ago works 100%. I wouldn't have expected this result, but at least 1 person posted that possibility in this thread, so once again, this forum was helpful. Thanks. ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^-----------------------------------------------------------------I recently sold one of my lights(Sunwayman T20CS) to a client for $40. I literally had less than 2-3 hours of runtime on it, and 90% of that was devoted to running on high while tailstanding on my night stand to reduce the voltage of 18650's for storage. So he also had a couple really cheap 18650 lights, with cheap no-name Li Ion batteries, so I told him to order 2 Panasonic NCR18650B batteries. I also gave him the Orbtronic 2900mah 18650 that I had in the T20CS. I told him to buy a new model Nitecore I4 charger.After receiving the batteries and charger, I placed the 2 new NCR18650B and the 5 year old barely used Orbtronic 18650 into the charger and turned it on. I had to leave before it finally finished charging. He left them in the charger until finished, then removed the batteries and reboxed the charger.The next time I was there was 1 week later. I tested the voltage of all 3 batteries, and they were all around 4.1v. I was there again yesterday, so I plugged 1 NCR18650B and the 2900mah Orbtronic battery into the charger and let it run until done. I pulled them off when finished, and once again measured 4.11v in both. I verified that the charger is genuine Nitecore, and I was using a new DMM that I picked out for him a few months ago at Lowe's. Any idea why this is happening? I have an old model I4 charger that I bought in 2012 and used daily for almost 4 years for ecigarette batteries with no issues.
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