Other things I noticed with my “defective” Opus BT-C100. Since I don’t have another good working unit to compare to, I’m not sure what a normal one behaves, but something that seems “off” with my unit:
1) when I plug in to power, the display will show some voltage starting from 1.xxx and increases a bit, then it shows FULL, even when there is no battery inserted yet
- I’m not sure if this is a normal behavior or not for a BT-C100 (I compared some other Youtube videos, and theirs seem to show “null” instead of “FULL” when no battery is inserted yet.
- for that matter, I’ve never seen this charger display the word “null” yet — when is it supposed to display “null”? Without a battery inserted, it displays “Full” (the battery voltage display will show some voltage increasing, then shows “Full”)
2) when I set to CHARGE (with a Li-ion battery inserted), ie. I press and hold the MODE button until the display is blinking the word “CHARGE”, then I pressed the CURRENT button to change the current selection, the allowable current ranges are 0.2, 0.3, 0.5, 0.7, 1.0, 1.3, 1.6 and 2.0 — I thought the charger disallows charging Li-Ion at 2.0A rate, but with my unit, it allows that (although as mentioned it does not really charge).
Similarly with DISCHARGE function, the allowable discharge rates are 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7 and 1.0A.
The manual indicates that 1.0A discharge is only allowed for NiMh and not for Li-Ion.
But on my unit, it seems to be able to allow discharging at 1.0A for Li-Ion batteries — is this normal for the Opus BT-C100?
(note: the unit gets hot very quickly so I didn’t attempt doing it for long, tested only a few minutes)