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Solar Generator build help please!


Egaig

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Trying to put together a lifepo4 based battery pack dc ac and solar inputs, dc 12v and ac 240 volt outputs for use in camping and offgrid house in Mozambique. Need about 200 aH 12 v nominal capacity ( probably go 4s ) with 2000w inverter . Wil need to be as compact as possible keeping weight down but also need proven reliable components. A bms with mppt and ac and dc input like Redarc Victron or Electrodacus type board with Winston lifepo4 batteries ?. I already have Victron 2000w inverter ( 12 v ) . Import or local lithium batteries? Build a pack ?. 

The off the shelf componets very expensive.... could consider the Chinese board from ebay iff I know it will be reliable? Big if... 

Wil mount in Pelican type case. Honda eu 2000 generator as backup. 

Any ideas ?..

Thanx

Emil

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Bluenova sells basically exactly what you describe, just sans the inverter. Also uses winston cells, and it comes in a carrying case not unlike the Pelicans. So all you need to do is make a second small suitcase with the inverter. There's a smaller pelican case (about briefcase size)  that I've used in a previous project that would work perfectly.

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  • 1 month later...

Bought the Blue Nova pack. Charging this with AC Victron 30 A charger. Charging in vehicle from alternator would need big dc to dc converter, this very expensive! Could I use inverter to power ac charger while driving to charge pack? Might not be as eficient as dc to dc but not terrible, and not so important - use a small amount of extra diesel ?

thanx

Emil

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50 minutes ago, Egaig said:

big dc to dc converter, this very expensive

What do you consider expensive? The Orion DC/DC converters are around 3k for a 30A 12V unit. Sure, it's not milk money but on a scale of expectations, I probably wouldn't entrust the health of my battery to a device that doesn't cost at least half that... 🙂

If that is too much, perhaps consider a smaller Orion unit. The 18A unit is about half the price.

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