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Author Topic: Davis Vantage Pro2 ISS Battery Life  (Read 31815 times)

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Offline niko

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Re: Davis Vantage Pro2 ISS Battery Life
« Reply #15 on: September 02, 2009, 05:30:55 PM »
This is a panasonic, the code is subtle but it's there on this one:

Offline gateway2capecod

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Re: Davis Vantage Pro2 ISS Battery Life
« Reply #16 on: September 02, 2009, 06:35:36 PM »
Hi niko...

WOW...You were right...it is there. I needed a flashlight and Magnifying glass to see it, but found it on both batteries.

They both have the datecode of 6-2019.

Thanks...Chris

Offline niko

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Re: Davis Vantage Pro2 ISS Battery Life
« Reply #17 on: September 02, 2009, 06:45:18 PM »
That's good  :D  Mine are on the way...

Offline snowman

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Re: Davis Vantage Pro2 ISS Battery Life
« Reply #18 on: September 08, 2009, 09:38:42 PM »
Thank you all for posting about the battery!

I have the classic Davis leaking capacitor going on, and didn't realize it until I chewed up 2 batteries in the past month.
For the last battery I got before finding out about the capacitor issue, I just grabbed one quickly at a hardware store, and paid $11.50!!!

I just placed my order for 2 of the 123's we need, and also stocked up on AA's and 9V's while I was there.

So, to replace my ISS SIM, plus 1 expensive battery, I am up to $83.50.......

Anyway, thanks for sharing the battery site!
~Stan~

Offline niko

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Re: Davis Vantage Pro2 ISS Battery Life
« Reply #19 on: September 09, 2009, 05:59:29 PM »
Hi niko...

WOW...You were right...it is there. I needed a flashlight and Magnifying glass to see it, but found it on both batteries.

They both have the datecode of 6-2019.

Thanks...Chris

Got mine today, they are 03-2019's which is good. I'l install my spare (a 2015) and one of these new ones, and have a good fresh spare. Good deal, thanks for the tip  :D

P.S. I discovered there are rechargeables made in this size, but of course that's not what the ISS needs.

Offline stuartturrell

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Re: Davis Vantage Pro2 ISS Battery Life
« Reply #20 on: September 12, 2009, 07:50:23 PM »
i have been using rechargable cr123's for around 9 months now.
I will never last as long as the normal batteries, but they work ok.
I haev always got one spare so as soon as i get the "station 1 low battery" message up, the spare is charged and later that day, i swap them over.

I do however have a leaking "supercap" in my ISS, and soil station. Remote anemometer is fine at the moment.
I am hoping using rechargeables hasn't caused the leaks :(

Offline niko

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Re: Davis Vantage Pro2 ISS Battery Life
« Reply #21 on: September 12, 2009, 08:50:37 PM »
What voltage are those rechargeables? I see both 3.0 volt (same as the regular battery) and 3.6 volt available, the supercap might not like the 3.6 volt ones.

Offline stuartturrell

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Re: Davis Vantage Pro2 ISS Battery Life
« Reply #22 on: September 13, 2009, 09:55:38 AM »
Checked this morning, the ISS had 3.7v rechargable battery and the anemomenter had a lithum 3.0v.
All my rechargable batteries are eitehr 3.6 or 3.7v, which is good for my torches, but not the stations.

Will keep them away in the future JUST in case

Offline zeppline

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Re: Davis Vantage Pro2 ISS Battery Life
« Reply #23 on: September 13, 2009, 08:19:06 PM »
Is is possible that is why the Supercap is leaking. They are rated at 2.7 volt, you are a full volt over that. I have look for higher voltage but they do not come in that size. Most are either 2.7 or 5.0 volts

Rainwise MKlll w/ cc3000 logger Win 7

Offline gateway2capecod

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Re: Davis Vantage Pro2 ISS Battery Life
« Reply #24 on: September 13, 2009, 08:31:29 PM »
Hello...

The Davis Vantage Pro2 requires a 3.0 volt Lithium Battery (Non Rechargeable).

The difference between Lithium and Lithium Ion is that the Lithium is NON Rechargeable,..and the Lithium Ion is rechargeable.

The solar panel on the Davis Unit ISS charges the Capacitor, not the battery...once the capacitor is out of juice...the battery is there for backup power. on most days the solar panel can charge the capacitor enough to make it through the entire night time hours, this is why the battery also last so long.

most likely, and I am guessing here..during the winter time when we get down to around 9 hours of daylight around X-mas time, is when the capacitor comes close to getting a good enough charge during the daytime to make it through the entire night.

I dont think it is a wise idea to place a 3.7 volt or any other volt.. than the recommended 3.0 volt that the Davis ISS Requires.

...Chris

Offline niko

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Re: Davis Vantage Pro2 ISS Battery Life
« Reply #25 on: September 13, 2009, 11:58:38 PM »
The solar panel on the Davis Unit ISS charges the Capacitor, not the battery...once the capacitor is out of juice...the battery is there for backup power.

It's the same thing in the end but I think the ISS always runs off the supercap, and the battery charges it when the solar panel doesn't.

Offline niko

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Re: Davis Vantage Pro2 ISS Battery Life - Update
« Reply #26 on: March 05, 2010, 04:39:56 PM »
Got mine today, they are 03-2019's which is good. I'l install my spare (a 2015) and one of these new ones, and have a good fresh spare. Good deal, thanks for the tip  :D

P.S. I discovered there are rechargeables made in this size, but of course that's not what the ISS needs.

I got the low battery message today, that 03-2019 battery was down to 2.832 volts, so that's only 6 months since it was installed. This VP2 ISS doesn't get much sun but even so I don't recall ever losing a battery that quickly before  :( 

Offline ThorntonWeather

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Re: Davis Vantage Pro2 ISS Battery Life
« Reply #27 on: March 06, 2010, 01:23:51 PM »
Like Chris, I haven’t touched my batteries in about the same amount of time so I reckon I too should join in and replace them.  Just need to be sure I know what I need…  I have the VP2+…
 
This takes two of the CR123’s?  Does the 24 hour fan take something different?
 
Also, I have a separate wireless transmitter for the anemometer.  Is that two CR123’s as well? 

Thanks!

   Tony

Offline andro700

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Re: Davis Vantage Pro2 ISS Battery Life
« Reply #28 on: March 06, 2010, 02:52:10 PM »
The one for the wireless transmitter for the anemometer takes just one Tony.

Chuck

Offline pinkpanther

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Re: Davis Vantage Pro2 ISS Battery Life
« Reply #29 on: March 06, 2010, 04:49:27 PM »
Just changed a leaking super cap from a soil/temp. transmitter, after "eating" two batteries. Both batteries lasted for about 2 months each, I first suspected the solar panel since it lost the glossy look after 2 years of operation, but on a closer look I found the cap. I should have ordered more than one when I did but?......... sure a 3.6 V rechargeable puts a strain on the cap since the circuit is designed for 3.0V .
Peter

p.s. this is a leaking super cap