While on a dive holiday my battery went down to less than 20% after 7 dives. I had expected it to last longer but I fitted a standard AA for the rest of the week.
Now I want to put my original Trustfire 14500 battery back in but I'm not sure which option I should choose. One of the options, 3.6V Saft shows as 100% charged. The other likely one, 3.6V Lion AA, shows as 0% charged.
Q1) Which option should I chose for the Trustfire 14500 battery provided with the computer?
Q2) Why do none of the options show the 20% full that it showed when I removed it?
I charged my OSTC Plus to 100% and used it on 2 dives. I then washed it in warm fresh water and left it to dry for 24 hours. I then put it away in it's box. The last dive was on 8th October and the battery %age when I put it away on the 10th of October was over 60%, I think it was 67%
I just looked at the computer again today, 23rd, and it shows 0% battery in red.
It still seems to work.
How long should the battery last on a charge if not used?
60% in 13 days seems a bit short.
I'm worried if I leave it much longer I'll lose the settings.
I'm not too worried about it using 30% on the two dives as I have it on high brightness.
Could this be down to the fact I swapped the rechargeable battery out for a standard AA for a while when on holiday?
is it still recalculating stuff?
Should I leave it to discharge more before I re-charge?
Battery type shows as T2 and it's sitting on the charger now and shows yellow and 4% so it is charging.
The firmware is 10.39. I updated it when it came out.
I'll charge it to 100% and do a better check on how it goes down and keep notes.
It's obviously not completely zero as everything still works so it looks like some sort of reading error rather than a dead battery. Does it show zero if it drops below a certain %age? E.g. my car goes from 20 miles to fuel up to get fuel now, probably because it's not that accurate and wants to be on the safe side.
I watched my computer for a month and noted the battery level.
Between checks the computer was closed in it's bag on my desk.
The only time it was out of it's bag was for a single 30 min sea dive.
After the dive it was soaked in warm water for an hour and then left to dry for a day in a warm room.
As you can see from the table below all seemed fine up until 13th November. it lost 17% in 3 weeks, including one dive.
However sometime in the last 10 days it went to 0%.
I'm not sure when that happened as I didn't look.
The computer is still working well, despite it saying 0%, apart from the red battery warning.
24 oct Midn. 4.1v 100%
26 oct noon 4.1v 99%
30 Oct 18:15 4.1v 96%
03 Nov 17:15 4.0v 94%
04 Nov 09:00 30 min dive.
05 Nov 15:00 3.9v 88%
08 Nov 16:00 3.9v 86%
13 Nov 10:30 3.9v 83%
23 Nov 15:00 3.8v 0%