Did anyone have the same experience? I was testing 4 18650s and just an hour after plugging it in charger displayed NULL, which was weird because it takes way more than that. When I plugged the batteries in they couldn't be recognized. I used my MM and I found out that itovercharged the batteries I was testing to 4.55 volts. I tried putting a 4.15v batteryand it was reading it at 3.90v, an hour later I tried again the reading was 4.02v, severly under the MM reading. My Opus BC3100 was only had a 0.03v discrepancy from my MM.
Very weird that the Voltage reading is below under by 0.30v but it can't recognize the ones it overcharged to 4.55v.
Very weird that the Voltage reading is below under by 0.30v but it can't recognize the ones it overcharged to 4.55v.