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Stacey007



Member Since: 25 Sep 2015
Location: Cheshire
Posts: 3750

United Kingdom 
Solar powered for Garage
Hello

The garage my sankey is in and tools etc has no power. I've been looking (thinking) of fitting solar.

Now I'm watching a program where I guys just fitted one panel on the roof, charging up 3 batteries and running power off it.

My question, what panel would I need and what batteries? (they looked similar to the leisure batteries in the caravan but I understand they need to be able to be charged and runflat over and over again? so not sure what type.


Appreciate its not the best time of year to be looking at solar...


Thanks
Post #580911 27th Nov 2016 8:53pm
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JOW240725



Member Since: 04 May 2015
Location: Suffolk
Posts: 7905

United Kingdom 2012 Defender 110 Puma 2.2 XS CSW Orkney Grey
I guessing this type of set up is only likely to be good for a little lighting and maybe a radio? At work we set up a solar system for a security gate and it forever ran flat during prolonged dull days. Eventually added a small wind turbine to it and worked will with combined. Unfortunately i wasn't really involved so don't know the details or specifics. Maybe look at Maplin? James
MY2012 110 2.2TDCi XS SW Orkney Grey - http://www.defender2.net/forum/topic43410.html
MY1990 110 200TDi SW beautifully faded Portofino Red - https://www.defender2.net/forum/post743641.html#743641
MY1984 90 V8 Slate Grey - https://www.defender2.net/forum/post744557.html#744557
Instagram @suffolk_rovers
Post #580936 27th Nov 2016 9:35pm
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Stacey007



Member Since: 25 Sep 2015
Location: Cheshire
Posts: 3750

United Kingdom 
Cheers,


You can run a caravan for a few days easy with one 110 amp leisure battery so I think with the correct battery maybe even a few in series it would last better?


I've seen kits such as this which sounds like it would work for a simple light switch... relatively cheap also.


I will have to look into it for more power Smile


These were just a quick ebay search for kits...


http://www.ebay.co.uk/itm/121214707866?ssP...1436.l2649


http://www.ebay.co.uk/itm/SOLAR-PANEL-DIY-...Swo4pYNygY
Post #580939 27th Nov 2016 9:43pm
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JOW240725



Member Since: 04 May 2015
Location: Suffolk
Posts: 7905

United Kingdom 2012 Defender 110 Puma 2.2 XS CSW Orkney Grey
A little bit of googling found this, probably more than you want but might be of interest...

http://www.windandsun.co.uk/information/so...DtU1vL3E7g James
MY2012 110 2.2TDCi XS SW Orkney Grey - http://www.defender2.net/forum/topic43410.html
MY1990 110 200TDi SW beautifully faded Portofino Red - https://www.defender2.net/forum/post743641.html#743641
MY1984 90 V8 Slate Grey - https://www.defender2.net/forum/post744557.html#744557
Instagram @suffolk_rovers
Post #580943 27th Nov 2016 9:50pm
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Stacey007



Member Since: 25 Sep 2015
Location: Cheshire
Posts: 3750

United Kingdom 
^ Will have a read and look stuff up.


Cheers, like anything there is a lot to look at / read
Post #580949 27th Nov 2016 9:58pm
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Cupboard



Member Since: 21 Mar 2014
Location: Suffolk
Posts: 2971

United Kingdom 2011 Defender 110 Puma 2.4 HT Corris Grey
What are you trying to power in your garage?
If it's just for lighting then you don't need much. If you're trying to run power tools or a compressor then you're going to need pretty beefy batteries or a generator.
Post #580970 27th Nov 2016 10:25pm
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Caterham



Member Since: 06 Nov 2008
Location: Birmingham
Posts: 6298

England 2011 Defender 110 Puma 2.4 XS CSW Stornoway Grey
you might want to have a look at this too?

http://www.navitron.org.uk/products/off-grid-systems
Post #581027 28th Nov 2016 8:12am
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Stacey007



Member Since: 25 Sep 2015
Location: Cheshire
Posts: 3750

United Kingdom 
Hello


Just lights would be good for starters but bright enough so you can work, not candles dimly glowing Smile
Post #581054 28th Nov 2016 10:13am
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David T



Member Since: 01 Sep 2016
Location: North Yorkshire
Posts: 190

United Kingdom 2012 Defender 110 Puma 2.2 USW Santorini Black
A Machine Mart generator for around £120 will power lights and small power. Thumbs Up
Post #581056 28th Nov 2016 10:30am
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Stacey007



Member Since: 25 Sep 2015
Location: Cheshire
Posts: 3750

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^ I'm after no ongoing cost if possible? so spend some money on the kit then it free Smile


Thanks though
Post #581057 28th Nov 2016 10:32am
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Cupboard



Member Since: 21 Mar 2014
Location: Suffolk
Posts: 2971

United Kingdom 2011 Defender 110 Puma 2.4 HT Corris Grey
In that case, a 100W panel, an MPPT controller (if you go for a smaller panel then get a PWM controller, but 100W and above it's worth having an MPPT one. They're more efficient particularly in marginal conditions but have a higher quiescent load) and a battery.

12V LED lights and you're good to go. Shouldn't be too expensive, you can also get 12V PIR floodlights for outside.

I built a setup similar to that for pumping water out of a river earlier this year.


Last edited by Cupboard on 29th Nov 2016 9:27am. Edited 1 time in total
Post #581086 28th Nov 2016 1:53pm
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Stacey007



Member Since: 25 Sep 2015
Location: Cheshire
Posts: 3750

United Kingdom 
^ Thanks will have a look at the items you mention.
Post #581087 28th Nov 2016 2:03pm
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Cupboard



Member Since: 21 Mar 2014
Location: Suffolk
Posts: 2971

United Kingdom 2011 Defender 110 Puma 2.4 HT Corris Grey
What might have been a bit more useful is if I'd posted what I bought!
http://www.sunstore.co.uk/12v-100w-Monocry...Panel.html was the panel, it seems to be fine
http://www.sunstore.co.uk/search.php?mode=search&page=1 controller
http://www.sunstore.co.uk/EP-Solar-MT-50-Remote-Meter.html display for controller

It's worth having the display, it tells you how the battery is doing, how much the panels are putting in to the battery and how much your load is. You can also configure it to switch off the load if the battery gets too low.

You don't have to fit a controller at all if you won't want to, the panel will just be clamped down to the battery voltage. The problem with doing that is that if you've got a moderately sized panel you can over-charge the battery, which is where a basic controller comes in. That will stop you over charging the battery and give you some sort of monitoring but you're still basically clamping the panel voltage down which isn't going to be the optimal point for the panel.

A solar panel's output current and voltage can vary, the maximum voltage is when you have no load (could be 20-30 something volts) and the maximum current is in to a dead short. Maximum power is somewhere in the middle and varies depending on the panel and conditions, but for the panel we have in moderate sun was high teens voltage. The MPPT controller adjusts how much current it draws from the panel and works out the point at which it's getting the most power. It continually adjusts it up a bit and down a bit to see if it's still at the maximum power point. MPPT controllers make a biggest difference when the conditions are marginal which is when you need the best performance anyway.

Solar panels tend to use special "solar connectors", but I guess you could always chomp them off and just crimp normal connectors on. I bought a pair of the special connectors (because the panel was pre-fitted with leads that had them on), use them to connect to my supply cabling and then straight in to the controller. I didn't fuse my cabling because the current rating of the cable was above the short circuit current of the panels. I did fuse the connection to the battery.

Lights, there are loads available from cheapies to really expensive ones but basically they're the same as LED worklights you get on Defenders.
Post #581296 29th Nov 2016 12:51pm
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Stacey007



Member Since: 25 Sep 2015
Location: Cheshire
Posts: 3750

United Kingdom 
^ Many thanks will have a look at this lot Smile


What battery(s) did you go with?
Post #581300 29th Nov 2016 1:23pm
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