Re: [OpenWrt-Devel] ideal battery for solar nodes?
* valent.turko...@gmail.com valent.turko...@gmail.com [23.05.2014 11:22]: So 92Ah is much too big, but is 7Ah too small? Does anybody have experience with batteries and solar power? i have and: it depends (TM) look out for you _local_ Solar Radiation and Temperature. here in Germany during wintertime we have no useable sun for up to 4 weeks at -30 celsius-degrees... bye, bastian ___ openwrt-devel mailing list openwrt-devel@lists.openwrt.org https://lists.openwrt.org/cgi-bin/mailman/listinfo/openwrt-devel
Re: [OpenWrt-Devel] ideal battery for solar nodes?
might be helpfull http://wiki.freifunk.net/Mobiler_UMTS-Router sorry for german, but site is only german... cheers martin 2014-05-23 11:28 GMT+02:00 Bastian Bittorf bitt...@bluebottle.com: * valent.turko...@gmail.com valent.turko...@gmail.com [23.05.2014 11:22]: So 92Ah is much too big, but is 7Ah too small? Does anybody have experience with batteries and solar power? i have and: it depends (TM) look out for you _local_ Solar Radiation and Temperature. here in Germany during wintertime we have no useable sun for up to 4 weeks at -30 celsius-degrees... bye, bastian ___ openwrt-devel mailing list openwrt-devel@lists.openwrt.org https://lists.openwrt.org/cgi-bin/mailman/listinfo/openwrt-devel ___ openwrt-devel mailing list openwrt-devel@lists.openwrt.org https://lists.openwrt.org/cgi-bin/mailman/listinfo/openwrt-devel
Re: [OpenWrt-Devel] ideal battery for solar nodes?
Can you specify the usage(in Watts) of these equipment you mentioned and voltage ? A 50W solar panel looks Ok, but you need to calculate the usage in Amps so you can find out how long the battery of that capacity can run without sun and you need the Watts and Voltage for that. Fernando On 23/05/2014 09:58, valent.turko...@gmail.com wrote: How do you calculate ideal battery for solar nodes? I know that it depends on how much routers there are planned. But for example let's use solar node that has one nanostation nanobridge for unplink and picostation for AP. I guess that 50W solar panel should be enough, right? But how big should the battery be? Is 7Ah enough? At my company we use 92Ah batteries for powering ADSL DSLAMs, and are replacing then now with new ones. Using a too big battery is also not advised because then you need much bigger solar panels because lead battery also looses lots of power due it's internal resistance. So 92Ah is much too big, but is 7Ah too small? Does anybody have experience with batteries and solar power? ___ openwrt-devel mailing list openwrt-devel@lists.openwrt.org https://lists.openwrt.org/cgi-bin/mailman/listinfo/openwrt-devel ___ openwrt-devel mailing list openwrt-devel@lists.openwrt.org https://lists.openwrt.org/cgi-bin/mailman/listinfo/openwrt-devel
Re: [OpenWrt-Devel] ideal battery for solar nodes?
Well, without the Watts or Current consumed it's impossible to make any estimations. Just a rough guess based on other people's usage as you mentioned below. Fernando On 23/05/2014 12:47, heini66 wrote: the wr741 is running with 5v dc. i talked to the user and he toled me, it is possible to opperate the mobile ap for 5-6h, belonging how much trafic is running on it. sorry, i can't tell somthing about the current.( don't own one to get a messurement ) but when he is able to work with 4 aa mignon for 5-6h, it can't be that much. 2014-05-23 12:40 GMT+02:00 Fernando Frediani fhfredi...@gmail.com mailto:fhfredi...@gmail.com: Can you specify the usage(in Watts) of these equipment you mentioned and voltage ? A 50W solar panel looks Ok, but you need to calculate the usage in Amps so you can find out how long the battery of that capacity can run without sun and you need the Watts and Voltage for that. Fernando On 23/05/2014 09:58, valent.turko...@gmail.com mailto:valent.turko...@gmail.com wrote: How do you calculate ideal battery for solar nodes? I know that it depends on how much routers there are planned. But for example let's use solar node that has one nanostation nanobridge for unplink and picostation for AP. I guess that 50W solar panel should be enough, right? But how big should the battery be? Is 7Ah enough? At my company we use 92Ah batteries for powering ADSL DSLAMs, and are replacing then now with new ones. Using a too big battery is also not advised because then you need much bigger solar panels because lead battery also looses lots of power due it's internal resistance. So 92Ah is much too big, but is 7Ah too small? Does anybody have experience with batteries and solar power? ___ openwrt-devel mailing list openwrt-devel@lists.openwrt.org mailto:openwrt-devel@lists.openwrt.org https://lists.openwrt.org/cgi-bin/mailman/listinfo/openwrt-devel ___ openwrt-devel mailing list openwrt-devel@lists.openwrt.org mailto:openwrt-devel@lists.openwrt.org https://lists.openwrt.org/cgi-bin/mailman/listinfo/openwrt-devel ___ openwrt-devel mailing list openwrt-devel@lists.openwrt.org https://lists.openwrt.org/cgi-bin/mailman/listinfo/openwrt-devel
Re: [OpenWrt-Devel] ideal battery for solar nodes?
Depending on the type of node usage would be 5, 10 and 15W for three typical nodes. Hope this helps. -- follow me - www.twitter.com/valentt http://kernelreloaded.blog385.com linux, anime, spirituality, wireless, scuba, linuxmce smart home, zwave ICQ: 2125241, Skype: valent.turkovic, MSN: valent.turko...@hotmail.com ___ openwrt-devel mailing list openwrt-devel@lists.openwrt.org https://lists.openwrt.org/cgi-bin/mailman/listinfo/openwrt-devel
Re: [OpenWrt-Devel] ideal battery for solar nodes?
See if this helps: http://translate.google.com/translate?hl=ensl=pttl=enu=http%3A%2F%2Fforum.wirelesspt.net%2Fviewtopic.php%3Ff%3D23%26t%3D730sandbox=1 http://translate.google.com/translate?hl=ensl=autotl=enu=http%3A%2F%2Fwirelesspt.net%2Fwiki%2FEnergia_Solar On 05/23/2014 04:58 AM, valent.turko...@gmail.com wrote: How do you calculate ideal battery for solar nodes? I know that it depends on how much routers there are planned. But for example let's use solar node that has one nanostation nanobridge for unplink and picostation for AP. I guess that 50W solar panel should be enough, right? But how big should the battery be? Is 7Ah enough? At my company we use 92Ah batteries for powering ADSL DSLAMs, and are replacing then now with new ones. Using a too big battery is also not advised because then you need much bigger solar panels because lead battery also looses lots of power due it's internal resistance. So 92Ah is much too big, but is 7Ah too small? Does anybody have experience with batteries and solar power? ___ openwrt-devel mailing list openwrt-devel@lists.openwrt.org https://lists.openwrt.org/cgi-bin/mailman/listinfo/openwrt-devel 0x15C4B382.asc Description: application/pgp-keys ___ openwrt-devel mailing list openwrt-devel@lists.openwrt.org https://lists.openwrt.org/cgi-bin/mailman/listinfo/openwrt-devel
