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Author Topic: Batteries, Inverters and building on  (Read 7057 times)
cregy
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« Reply #30 on: February 12, 2012, 09:09:04 AM »

Hi Guys

http://www.alternativeenergystore.co.uk/page/products/12/0/Deep-Cycle-and-Leisure-Batteries.htm
The above page lists some Trojan batteries which I am told are good. But how do you decide?

Thanks

Rich
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cregy
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« Reply #31 on: February 12, 2012, 09:19:12 AM »

Just doing a searched for flooded lead acid forklift batteries and can't find a site that says, "buy now!". There are a lot of advisory sites which dare useful reading but is there a site I can go to that would be good to buy these batteries from please?

Thanks

Rich
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billi
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« Reply #32 on: February 12, 2012, 09:27:32 AM »

Hi   yes  forklift    batteries   , many of us  use  Smiley

Perhaps  this link helps , but cannot tell if  100 % trustable

 http://www.ebay.co.uk/itm/deep-cycle-battery-solar-power-wind-turbine-heavy-duty-/330684493100?pt=UK_ConsumerElectronics_Batteries_SM&hash=item4cfe54ed2c

But give the fork lift suppliers in your are a call  perhaps

Billi
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1.6 kw and 2.4 kw   PV array  , Outback MX 60 and FM80 charge controller  ,24 volt 1600 AH Battery ,6 Kw Victron inverter charger, 1.1 kw high head hydro turbine as a back up generator , 5 kw woodburner, 36 solar tubes with 360 l water tank, 1.6 kw  windturbine
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« Reply #33 on: February 12, 2012, 09:38:01 AM »

But  in general one should be  able to buy  new forklift batteries   for about  100 GBP    per  store able kwh
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1.6 kw and 2.4 kw   PV array  , Outback MX 60 and FM80 charge controller  ,24 volt 1600 AH Battery ,6 Kw Victron inverter charger, 1.1 kw high head hydro turbine as a back up generator , 5 kw woodburner, 36 solar tubes with 360 l water tank, 1.6 kw  windturbine
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« Reply #34 on: February 12, 2012, 09:53:23 AM »

I think that a note of pragmatism needs to creep in - if we accept that one shouldn't add to an existing battery bank, and that the outputs need not be that large, it may prove a sensible choice to go for some good ex-equipment gel batteries - if he could (for instance) get some for 50 a pop for 150 amp hour batteries, then he'll get a good big bank of them for a lowish price (his sort of budget isn't going to get many new Trojans), and if they're treated gently could last a reasonable time (Biff I gather has used similar). Yes the holy grail are FLA, but I just don't think they're affordable unless there's a generous benefactor with an ex-forklift battery...
Again, if we're being pragmatic, it may be worth looking at a 12v system - then lots of "car" equipment can be used direct from the batteries... for instance, these are excellent for using/charging laptops  - http://www.ebay.co.uk/itm/80W-DC-12V-Car-Power-Supply-Adapter-Charger-Laptop-/110691218961?pt=UK_Computing_LaptopAccessories_PowerSupplies&hash=item19c5b5f611#ht_2516wt_1114 - and use less current than inverting it to mains voltage and then using a laptop "brick" - you can also build a mega sound system dirt cheap using car stuff (mp3/cd player/radio, car amps, subwoofers etc).... Smiley
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cregy
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« Reply #35 on: February 14, 2012, 03:04:27 PM »

Hi All

I am hoping to purchase 3 x 170w solar panels from Ivan. Is there any reason I should buy 4 instead of 3 please?

I am also considering purchasing:
Compaq UPS/Inverter 48Vdc for the batts, 2200 watts o/p for 190
Batteries at 20 each for 12v 26Ah. They are dated 2011. 4 for each bank with 4 3 banks.
The 3 banks of batteries will give us 48Vdc 78Ah

What do folks think. It seems a good idea after reading the last post. Or after reading Martin's post should I buy the batteries but invest in:
A *300w pure sinewave inverter (60), and proper controllers (a 30amp Morningstar and a 60amp Xantrex)

I have also been given these:
http://tsop.org.uk/wp-content/uploads/2012/02/IMG_1102.jpg
http://tsop.org.uk/wp-content/uploads/2012/02/IMG_1103.jpg
And also a leisure battery. I am wondering if they are any good but I also had an idea to run this simply as a separate system - portable sort of!

Thanks

Rich
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martin
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« Reply #36 on: February 14, 2012, 03:16:24 PM »

In brief, buy the extra panel (the price is superb), the batteries will to all intents and purposes be utterly useless (FAR too small a capacity)-  the UPS inverter is overkill (by miles), and in that list there is no proper charge control, so overall, that lot is a bargepole job except for the panels! Whilst I'm spreading doom and gloom, the linked charge controller is tiny (probably too small to cope with one panel's output), so definitely a "separate system job", and the inverter is "modified square wave" (not pure sinewave), so I wouldn't risk using any delicate equipment off it.....
I'd suggest grabbing the panels while they're cheap, taking a deep breath and really researching what you can get for the remaining budget.... Smiley

My mention of the 300w pure sinewave inverter and the two controllers (I have 2 banks of batteries) was just an illustration of what I'm using in my shed system, and is not necessarily the best for your circumstances, but would reiterate the need for proper controllers - also look at the lower output inverters, with a smallish system it's very simple to flatten batteries using a big inverter........
« Last Edit: February 14, 2012, 03:22:34 PM by martin » Logged

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cregy
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« Reply #37 on: February 15, 2012, 08:02:40 PM »

the batteries will to all intents and purposes be utterly useless (FAR too small a capacity)-

Hi Guys

Thanks for all the replies. I am getting there! Just wanted to ask a question re the above. `Batteries - 12v deep cycle etc but what capacity should I go for. There is a 125ah deep cycle battery on ebay for 96.99
http://www.ebay.co.uk/itm/XPLORER-ULTRA-DEEP-CYCLE-125AH-SEALED-LEISURE-BATTERY-/260814216862?pt=UK_Campervan_Caravan_Accessories&hash=item3cb9bd1e9e#ht_1469wt_1165

However, going back to Trojan. Why not 2 of these?
http://justcarbatteries.co.uk/index.php/specialist-batteries/trojan-12-volt-battery-j150-deep-cycle.html
or 4 of these:
http://www.ebay.co.uk/itm/TROJAN-T105-BATTERY-/130296299020?pt=UK_Lifting_Moving_Equipment&hash=item1e5643be0c#ht_1277wt_907
Ok that pushes the budget up somewhat but better to get this element right.

Thanks

Rich
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cregy
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« Reply #38 on: February 15, 2012, 08:13:40 PM »

Hi Guys

The other question I would love to ask is what is better 4 x 12v batteries or as one member of the forum has:
6 x 2v cells 1550amp/h 5C
24 x 2v cells 700amp/h 5C

Thanks

Rich
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billi
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« Reply #39 on: February 15, 2012, 09:38:01 PM »

so to resume  .........you have a decent generator , to avoid  that this Generator has to run  24 hours(or as long as the lights/consumers are needed )  you need  an idea to pump say 1-2 kwh  into a battery  and then shut down the generator after an hour or two  and live the rest of the day from battery  and inverter

So first i think ,it this has to be sorted  and for a decent battery and an inverter/charger to cope with your setup , you have to spent  about 1500GBP

surely you can reduce this  in finding a cheaper  inverter or/and battery ,but a UPS or a "normal" inverter will not be able  to  integrate your generator  without additional costs..... for example   a charger for your battery

It appeared to me  ,that you would like to grow with the setup   and ad on ,so a decent battery is essential ,

I have no intention to tell you ,that your wishes can be full filled with 1000 GBP

More the intention is to start  with a setup ,that is able to cope with the future expansions

Soi  think you need 1500  GBP tostart and another 700-1000  for a PV  attached to it ( as fast as you can )

But I might be wrong  fight

Billi

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1.6 kw and 2.4 kw   PV array  , Outback MX 60 and FM80 charge controller  ,24 volt 1600 AH Battery ,6 Kw Victron inverter charger, 1.1 kw high head hydro turbine as a back up generator , 5 kw woodburner, 36 solar tubes with 360 l water tank, 1.6 kw  windturbine
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« Reply #40 on: February 15, 2012, 09:47:29 PM »

Quote
6 x 2v cells 1550amp/h 5C
24 x 2v cells 700amp/h 5C


First one holds ca   18  kwh   at 100 % discharge ( not  advisable or possible)
second  one  holds ca 33 kwh

Billi
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1.6 kw and 2.4 kw   PV array  , Outback MX 60 and FM80 charge controller  ,24 volt 1600 AH Battery ,6 Kw Victron inverter charger, 1.1 kw high head hydro turbine as a back up generator , 5 kw woodburner, 36 solar tubes with 360 l water tank, 1.6 kw  windturbine
cregy
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« Reply #41 on: February 16, 2012, 09:41:54 PM »

I have no intention to tell you ,that your wishes can be full filled with 1000 GBP

More the intention is to start  with a setup ,that is able to cope with the future expansions

Soi  think you need 1500  GBP tostart and another 700-1000  for a PV  attached to it ( as fast as you can )

Thanks for the reply Billi. Unfortunately I am not going to get a bigger budget so I am stuck with between 1000 and possibly stretching to 1200. I know I want to build on from what I get so I am considering a couple of these:
http://justcarbatteries.co.uk/index.php/specialist-batteries/trojan-12-volt-battery-j150-deep-cycle.html

Any reason why not please? It makes my budget 400 on PV Panels, 450 on batteries, 350 0n a controller and inverter.

Thanks

Rich


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cregy
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« Reply #42 on: February 19, 2012, 08:33:54 PM »

Any thoughts on batteries please?

Thanks

Rich
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Justme
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« Reply #43 on: February 19, 2012, 09:34:41 PM »

Quote
6 x 2v cells 1550amp/h 5C
24 x 2v cells 700amp/h 5C


First one holds ca   18  kwh   at 100 % discharge ( not  advisable or possible)
second  one  holds ca 33 kwh

Billi

The first cost about 120 & the second 450. Both were ex forklift units.

With the current prices for lead acid bats they are worth 210 & 420 as scrap.
(350/tonne)
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Navitron solar thermal system
30 x 58mm panel 259L TS
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6 x 2v cells 1550amp/h 5C
24 x 2v cells 700amp/h 5C
Total bank 4350 amp/h 5C
cregy
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« Reply #44 on: February 20, 2012, 08:02:06 PM »

What do folks make of this please?
http://www.ebay.co.uk/itm/140704819155?ru=http%3A%2F%2Fwww.ebay.co.uk%3A80%2Fsch%2Fi.html%3F_from%3DR40%26_trksid%3Dp5197.m570.l1313%26_nkw%3D140704819155%26_sacat%3DSee-All-Categories%26_fvi%3D1&_rdc=1#ht_500wt_1413

Thanks.

And any ideas about these batteries please?
http://www.ebay.co.uk/itm/J305G-310ah-Trojan-Battery-Deep-Cycle-Battery-/160740452923?pt=UK_Gadgets&hash=item256ce0aa3b#ht_1564wt_1398

Rich
« Last Edit: February 20, 2012, 08:12:09 PM by cregy » Logged
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