But you can't charge these batteries via their terminals, can you? They have USB-C charging connectors. [email protected] schrieb am Freitag, 6. Februar 2026 um 12:33:37 UTC+1:
> For about a year I used Zithion and Ausmann Li-Ion batteries, with good > success. They incorporate a voltage controller in the AA that helps for > both charging and discharging. The "apparent" discharge while unused is > very low, 5-15 % per month. and the output voltage is very stable while in > use. I measured 1.54 V. This stability is important for stations that are > voltage sensitive , generally for Pressure or humidity that are not well > compensated (I use a Irox PC2 station, aka Honneywell 923). > Only drawback, they are expensive, but their prices are dropping > regularly. > > > > Le Thursday, February 5, 2026 à 4:26:41 PM UTC+1, [email protected] a > écrit : > >> OK, then just go for it and give it a try :) >> >> Tomasz Lewicki schrieb am Donnerstag, 5. Februar 2026 um 12:38:54 UTC+1: >> >>> "Supercap" means supercapacitor? I don't have any... And my knowledge >>> about electronics is near to zero :) >>> >>> According to low battery alarm - I'didn't noticed it on display before >>> so the death of lithium batteries was sudden and unexpected :| >>> >>> czwartek, 5 lutego 2026 o 10:59:57 UTC+1 [email protected] napisał(a): >>> >>>> Try a supercap instead of a battery and measure the end voltage. The >>>> end voltage should be roundabout the same with the supercap and >>>> rechargeable batteries. It shouldn't exceed the maximum end voltage of the >>>> battery to be used, and high enough to store enough energy. Given the >>>> charging/discharging curve of NiZn Anything between 1,6V and 1.85V will >>>> more or less fully charge the battery without harming it. If under 1,4V it >>>> is empty and the voltage will dramatically fast so the low batt alarm >>>> really might not work as one might expect it. >>>> >>>> Tomasz Lewicki schrieb am Donnerstag, 5. Februar 2026 um 09:08:42 UTC+1: >>>> >>>>> I ordered NiZn rechargeable batteries. I don't think I need to worry >>>>> about damaging the station due to overvoltage, because - as I checked on >>>>> the only AA lithium battery I have on hand, which has been sitting around >>>>> for two years - the voltage on it is exactly 1.79 V. So 1.6 V, even when >>>>> fully charged, is unlikely to be a problem. I'm more concerned about >>>>> charging. >>>>> >>>>> wtorek, 3 lutego 2026 o 09:20:11 UTC+1 [email protected] napisał(a): >>>>> >>>>>> Afaik you could simply use NiZn, which won't fully charge in this >>>>>> station. Also, the low battery warning will most likely not fit when >>>>>> this >>>>>> cell is being used. I'd give it a try. Also, you might not want to put >>>>>> fully charged NiZn cells into your device. >>>>>> >>>>>> But absolutely no guarantee you won't ruin the station. >>>>>> >>>>>> Tomasz Lewicki schrieb am Dienstag, 3. Februar 2026 um 07:13:53 UTC+1: >>>>>> >>>>>>> I would like to ask if anyone still uses the HP-1001/1002 >>>>>>> (WS-1001/1002) station with the WH24 external sensor. I am having >>>>>>> trouble >>>>>>> finding the right batteries for this sensor. I know it is old >>>>>>> equipment, >>>>>>> but maybe someone will be able to help me. >>>>>>> >>>>>>> I got the station from a friend who bought it in 2015 and didn't use >>>>>>> it because he couldn't install it (he lives in a multi-story apartment >>>>>>> building). I got it in 2023 and started using it in the spring of 2024. >>>>>>> I >>>>>>> found the original manual here -> https://fccid.io/WA5WH24B (April >>>>>>> 2013 version). The Polish distributor's manual is from January 2014. It >>>>>>> contains an important note that is not included in the original manual >>>>>>> about powering the WH24 with 1.5 V ZnMn rechargeable batteries: "The >>>>>>> outdoor sensor can only be used with the special ZnMn rechargeable >>>>>>> batteries with a rated voltage of 1.5 V included in the set." Since I >>>>>>> didn't have any, I used regular 1.2 V NiMH rechargeable batteries, but >>>>>>> they >>>>>>> quickly died during the cold spell, which is not surprising. That's why >>>>>>> I >>>>>>> used 1.5 V lithium batteries. They worked for almost two years, give or >>>>>>> take a few weeks. But now I have to replace them, which brings me to my >>>>>>> question for WH24 users - what kind of batteries should I use? There >>>>>>> are no >>>>>>> longer any 1.5 V ZnMn rechargeable batteries on the market, but there >>>>>>> are >>>>>>> NiZn batteries with a voltage of 1.6 V. Will these be suitable? Should >>>>>>> I go >>>>>>> for lithium batteries again? The thing is, access to the external >>>>>>> sensor is >>>>>>> very difficult and I can't easily replace it if something goes wrong. >>>>>>> >>>>>> -- You received this message because you are subscribed to the Google Groups "weewx-user" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion visit https://groups.google.com/d/msgid/weewx-user/7b407cf8-adb6-4228-aa95-c2da5f3fbdc2n%40googlegroups.com.
