Andy48 Posted June 18, 2020 Share Posted June 18, 2020 Posted by PatMc on 18/06/2020 15:55:24: The Horus hadn't corrected overnight or when left on for about 20 minutes in a bedroom this morning. However left it switched on in the garden sun lounge the time & date were correct when checked after about 30 minutes. Since the Taranis doesn't have GPS I've switched off the RTC adjust option. I'm now wondering if selecting this option increases the drain on the RTC battery a) when there's no GPS b) when there is GPS. If the drain is increased in b) it may be best to de-select the option once the clock has been updated. Which Horus do you have? Quote Link to comment Share on other sites More sharing options...
PatMc Posted June 18, 2020 Share Posted June 18, 2020 The X12S Quote Link to comment Share on other sites More sharing options...
Alan K. Posted September 18, 2023 Share Posted September 18, 2023 Hi. I am new here, so I hope this is appropriate, and not out of date..... Given the difficulty of replacing the RTC battery has anyone considered / tried adding a couple of extension wires to the existing battery holder and mounting another battery holder with battery in a more accessible location? Would there be room in the case for this - I haven't look inside yet. Quote Link to comment Share on other sites More sharing options...
Geoff S Posted September 18, 2023 Author Share Posted September 18, 2023 I certainly didn't think of doing it when I replaced the battery and it's still working. In fact, until this post cropped up again, I'd forgotten I'd ever replaced the battery at all! The new RTC battery has lasted a loot longer than the original - perhaps I should check its voltage? Quote Link to comment Share on other sites More sharing options...
Geoff S Posted December 25, 2023 Author Share Posted December 25, 2023 It's flat again! I got the RTC battery error yesterday when I switched on my Horus to do the Pup motor tests. So the new batter has only lasted 2.5 years like its predecessor. I'll replace it in the spring. I won't be doing much flying for a few weeks. At least I know the drill. Quote Link to comment Share on other sites More sharing options...
Kevin Fairgrieve Posted December 25, 2023 Share Posted December 25, 2023 A couple of mine also need the RTC battery changing. Probably shall not bother now as ETHOS looks like it is dead on the TX12S. The second is a BETA machine and rarely sees the light of day. The other on Edge with touch screen mod does not need doing. Quote Link to comment Share on other sites More sharing options...
Tim Kearsley Posted Thursday at 07:48 Share Posted Thursday at 07:48 Just like to say thank you to @Geoff S for the pictures and description - earlier in the thread - of changing the RTC battery on the Horus - very useful! I've just replaced mine, after getting warnings at startup, and it is indeed a bit fiddly. I managed to chip off a small piece of the plastic surround of the battery holder (it was very brittle) in my ham-fisted attempts to free the old battery but it seems to hold the new battery OK still. I reckon the battery had lasted about 2.5 years, as others have said. 1 Quote Link to comment Share on other sites More sharing options...
Andy Stephenson Posted Thursday at 10:13 Share Posted Thursday at 10:13 I recently got an X14 Tx, does anyone know if this one has an RTC battery. I assume this is to hold up the model memory etc. I'm surprised there isn't a better solution to long term memory retention like EEPROM. Quote Link to comment Share on other sites More sharing options...
Mike Blandford Posted Thursday at 11:13 Share Posted Thursday at 11:13 The RTC battery only keeps the clock running, model data is either in EEPROM, flash memory or on the SD card. Mike Quote Link to comment Share on other sites More sharing options...
Andy Stephenson Posted Thursday at 23:34 Share Posted Thursday at 23:34 Should have remembered what RTC meant! Quote Link to comment Share on other sites More sharing options...
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