Recent content by The-J-Man

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    Test/Review of Charger Opus BT-C3100 V2.1

    Thanks!! popped some cells in that were at a lower voltage and they charged to 4.35 just fine! :)
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    Samsung SDI 18650 battery code is different from Samsung SDIEM 18650 battery code

    I cant find the option to upload images, how does it work? Got a bunch of 5s packs, dont know what they were used in. I took them apart and the cells all had the identical printed info on them to the cells I posted about here earlier. ICR18650-22P M Samsung SDIEM 5FX4 But on the can it says...
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    Test/Review of Charger Opus BT-C3100 V2.1

    Changed the internal switch to 4.35v setting but when I put in a cell that at 4.2v it says full. Tried with all 3 of my c3100 V2.2 and it didnt work on any of them. Any one know why? the cells are ICR18650-30A /B
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    Samsung SDI 18650 battery code is different from Samsung SDIEM 18650 battery code

    I have 260 of the cells in front of me now and they all have the same date code, could mean nothing as they produce hundreds of thousands a day but I sure hope they are not rewrapped.
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    Test/Review of Charger Opus BT-C3100 V2.1

    Wow thats a tiny solder bridge!! how did you manage to fix that :D
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    Samsung SDI 18650 battery code is different from Samsung SDIEM 18650 battery code

    Yeh that was clear to me, I mean the codes on the can itself. Awesome tool though!!, thanks for posting that!
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    Samsung SDI 18650 battery code is different from Samsung SDIEM 18650 battery code

    Reviving this old thread here :) I have supposedly genuine Samsung SDI Malaysia cells. They read: ICR18650-22P M Samsung SDIEM 5FX4 and under the wrapper on the can on this specific cell says: B2FY NLT41 E4 can anyone tell me if they are...
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    Test/Review of Charger Opus BT-C3100 V2.1

    I got some 40€ multimeter from amazon that had a 5star rating, its been just as accurate as some super fancy one I have at work. My first c3100 is a tiny bit high compared to the meter but the second is quite a but low. so there might be a chance to adjust how its calibrated? I put some...
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    Test/Review of Charger Opus BT-C3100 V2.1

    I just got myself a second one and the Voltage reading are terribly wrong. A 4.20v cell reads at 4.13v. My first charger reads it at 4.21v. Is it possible to calibrate these chargers, or is my unit just defective?
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    Test/Review of Charger Opus BT-C3100 V2.1

    People are saying the opus charges to 4.22v, mine definitely stops at 4.2, what gives?
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    Test/Review of Charger Opus BT-C3100 V2.1

    In then process of testing hundreds of 18650s here and the results really are a bit high. Ive had several that the 3100 v2.2 says it's discharged 2200-2250 from a 2000 cell. Considering this inaccuracy seems normal I'm trying to find out as accurately as possible what percentage on top it...
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