48v battery and inverter questions

oil pan 4oil pan 4 Posts: 669Solar Expert ✭✭✭✭
2 quick questions.

1, what is the best way to get around 1,000ah of lead acid without paralleling a bunch of smaller batteries?
I'm thinking forklift traction battery.

2, what is the smallest 48v inverter I can get?
The smallest highend name brand inverter I can find for 48v start with capacities of 3kva.
I see smaller 48v inverters on ebay but I have 3 concerns, first they might say that they are pure sine wave, but they don't look pure sine. Two, they are 1kva to 1.5kva but some how I get the feeling a 3kva magnum or outback would be more efficient, well pretty much all around, from idle to low load to full power. Three they're probably junk.
I was wondering if any one had a decent, small (500 to 1kva), efficient, reliable 48v inverter for away loads like the refrigerator and other small loads you don't usually want to turn off?
Or a small efficient 48v inverter for evening time when i just want to power something like a TV, computer, cable box and little stuff like that?

Solar hybrid gasoline generator, 7kw gas, 180 watts of solar, Morningstar 15 amp MPPT, group 31 AGM, 900 watt kisae inverter.

Solar roof top GMC suburban, a normal 3/4 ton suburban with 180 watts of panels on the roof and 10 amp genasun MPPT, 2000w samlex pure sine wave inverter, 12v gast and ARB air compressors.

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  • PhotowhitPhotowhit Posts: 4,449Solar Expert ✭✭✭✭
    edited February 2017 #2
    Not sure about the larger ones, or if you're asking about 2 different inverters. ExelTech makes a 600 watt in 48 volt and I'd likely purchase one used cheaply of eBay, seems they've been running about $100. I think new they run $3-400 now (actually now $600 new), I haven't checked NAWS, I think they mainly stock 12 and 24 volt versions. ExelTech is a long established company, builds in the US and I think still has a $100 repair/update policy on their inverters, NAWS had this up last year on the old website.

    I needed to check on some boots on eBay so I checked. There is one miss labeled and one for $155 (with shipping) made in 2010, and one that they can't copy the name,$109 + $20 shipping, that they can't spell the name right! Here's a link came up in my feed;
    http://www.ebay.com/itm/Exceltech-600-watt-pure-sinewave-inverter-48-volt-dc-to-110-volt-ac-power/332093139529?_trksid=p2047675.c100005.m1851&_trkparms=aid=222007&algo=SIC.MBE&ao=2&asc=41375&meid=419b4d2b841c4c90a8b89883773350ba&pid=100005&rk=3&rkt=6&mehot=lo&sd=262844987641

    Forgot to mention that it is hard wire able! even has a shroud for the battery cable!

    They also come in an 1100 (and 2000) watt version.
    Home system 4000 watt (Evergreen) array standing, with 2 Midnite Classic Lites,  Midnite E-panel, Prosine 1800 and Exeltech 1100, ForkLift battery. Off grid for @13 of last 14 years. 1000 watts being added to current CC, @2700 watts to be added with an additional CC.
  • mvasmvas Posts: 298Registered Users ✭✭✭
    edited February 2017 #3
    1) Series connect 2 Volt 1,000 AH batteries
    2) Aims 2000 Watt / Cotek 1500 Watt
  • mike95490mike95490 Posts: 7,564Solar Expert ✭✭✭✭
    Powerfab top of pole PV mount | Listeroid 6/1 w/st5 gen head | XW6048 inverter/chgr | Iota 48V/15A charger | Morningstar 60A MPPT | 48V, 800A NiFe Battery (in series)| 15, Evergreen 205w "12V" PV array on pole | Midnight ePanel | Grundfos 10 SO5-9 with 3 wire Franklin Electric motor (1/2hp 240V 1ph ) on a timer for 3 hr noontime run - Runs off PV ||
    || Midnight Classic 200 | 10, Evergreen 200w in a 160VOC array ||
    || VEC1093 12V Charger | Maha C401 aa/aaa Charger | SureSine | Sunsaver MPPT 15A

    solar: http://tinyurl.com/LMR-Solar
    gen: http://tinyurl.com/LMR-Lister ,

  • oil pan 4oil pan 4 Posts: 669Solar Expert ✭✭✭✭
    Yeah I was looking on here and ebay for the 48v inverters.
    All I have ever bought is 12v and have only really ever looked at 24v.
    Are these smaller 48v 600 to 1500 watt inverters pure sin wave?

    Because I gave away and sold all my 12v modified sine wave inverters when I discovered most battery chargers didn't work with them and motors didn't work well with them. And replaced them with a 2000w samlex, 900w kiasae and 1000w xantrax.

    Solar hybrid gasoline generator, 7kw gas, 180 watts of solar, Morningstar 15 amp MPPT, group 31 AGM, 900 watt kisae inverter.

    Solar roof top GMC suburban, a normal 3/4 ton suburban with 180 watts of panels on the roof and 10 amp genasun MPPT, 2000w samlex pure sine wave inverter, 12v gast and ARB air compressors.

  • PhotowhitPhotowhit Posts: 4,449Solar Expert ✭✭✭✭
    Home system 4000 watt (Evergreen) array standing, with 2 Midnite Classic Lites,  Midnite E-panel, Prosine 1800 and Exeltech 1100, ForkLift battery. Off grid for @13 of last 14 years. 1000 watts being added to current CC, @2700 watts to be added with an additional CC.
  • oil pan 4oil pan 4 Posts: 669Solar Expert ✭✭✭✭
    No reason not to use 48v then.
    The main reason I thought going to 24v would be good was because of all the smaller name brand 24v inverters.
    It initially appeared that nothing small and decent came in 48v flavor, I originally thought everything in 48 had to be big.

    Solar hybrid gasoline generator, 7kw gas, 180 watts of solar, Morningstar 15 amp MPPT, group 31 AGM, 900 watt kisae inverter.

    Solar roof top GMC suburban, a normal 3/4 ton suburban with 180 watts of panels on the roof and 10 amp genasun MPPT, 2000w samlex pure sine wave inverter, 12v gast and ARB air compressors.

  • mike95490mike95490 Posts: 7,564Solar Expert ✭✭✭✭
    Nope, many pure sine 48VDC inverters
    Powerfab top of pole PV mount | Listeroid 6/1 w/st5 gen head | XW6048 inverter/chgr | Iota 48V/15A charger | Morningstar 60A MPPT | 48V, 800A NiFe Battery (in series)| 15, Evergreen 205w "12V" PV array on pole | Midnight ePanel | Grundfos 10 SO5-9 with 3 wire Franklin Electric motor (1/2hp 240V 1ph ) on a timer for 3 hr noontime run - Runs off PV ||
    || Midnight Classic 200 | 10, Evergreen 200w in a 160VOC array ||
    || VEC1093 12V Charger | Maha C401 aa/aaa Charger | SureSine | Sunsaver MPPT 15A

    solar: http://tinyurl.com/LMR-Solar
    gen: http://tinyurl.com/LMR-Lister ,

  • SurfpathSurfpath Posts: 350Solar Expert ✭✭✭
    ...I think there is a real need for smaller, more efficient and less expensive, 48V inverters.  The average off gridder doesn't have to account for high start up surge if they have an inverter fridge.  The latter are way more available now.  My Outback inverter burns about 25 watts continuously, that's not insignificant.

    I'd love to one day wake up and hear that a company like Morningstar have designed a Sure Sine 48v 900w -1,200 surge- inverter. I think it would sell like hotcakes and Morningstar could package it with one of their neat MPPT controllers.

    I do love my Outbacks, but just saying......
    Outback Flexpower 1 (FM80, VFX3048E-230v, Mate, FlexNetDC) 2,730watts of "Grid-type" PV, 370 AmpHrs Trojan RE-B's, no genny, 100% off grid.
  • PhotowhitPhotowhit Posts: 4,449Solar Expert ✭✭✭✭
    Surfpath said:
    ...I think there is a real need for smaller, more efficient and less expensive, 48V inverters....

    ...My Outback inverter burns about 25 watts continuously, that's not insignificant.
    Even the ExelTech xp1100 draws 20 watts, there is a low draw version that draws 10, I forgot the reasoning, but I think it's been discussed here somewhere.
    Home system 4000 watt (Evergreen) array standing, with 2 Midnite Classic Lites,  Midnite E-panel, Prosine 1800 and Exeltech 1100, ForkLift battery. Off grid for @13 of last 14 years. 1000 watts being added to current CC, @2700 watts to be added with an additional CC.
  • oil pan 4oil pan 4 Posts: 669Solar Expert ✭✭✭✭
    A very small name brand 48v inverter would be great. I still have time, not buying anything yet.

    Solar hybrid gasoline generator, 7kw gas, 180 watts of solar, Morningstar 15 amp MPPT, group 31 AGM, 900 watt kisae inverter.

    Solar roof top GMC suburban, a normal 3/4 ton suburban with 180 watts of panels on the roof and 10 amp genasun MPPT, 2000w samlex pure sine wave inverter, 12v gast and ARB air compressors.

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