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Chere's bud, But would they be ok for a battery backup as I may have access to some. And what would be the best inverter for them. Cheers

Yes, I know mate, don't want to invalidate the warranty on my system. I have another thread going about batteries and if i can use them. Cheers

guys would those batteries above be able to use with an ac coupled inverter for use at night when fully charged. I know I cannot touch my 4kw system for warranty reasons. cheers

Thanks bud, will look into it.

No I know that bud, Does anyone know what would be size of batteries in Kwh that I would need for a 3.68 Kwh system. Thanks

Thanks, There is no space in the hallway, there is a small cupboard enough to house the the Main Board with the regeneration meter, also Ev charger which is fitted independently. I don't have a garage so it would really need to go in the loft. Yes i can run 6mm2 cables and fit boxes batteries...

@MHarv something to consider bud, This is the setup in my loft (not a very good photo taken from an angle) Anyway the two strings from the panels goes into bottom of Inverter, and approx. 15m of 4mm2 drops down to CU in cupboard downstairs where it connect to mains isolator then goes into a...

Cheers Bob, I don't have FiT or SEG as i would only get pence back. Hence the reason of just wanting batteries for storage as an addon but my problem is that i would want AC couple battery system in the loft out of sight, but doesn't look like that can happen as it's got to connect to main...

Thanks guys, @binkyWith Scottish Power, I don't want to invalidate my system, hence the reason for inquiring bud. @MHarv do i need to swap out my inverter, as i would want to keep as is, and install batteries as an addon if you know what i mean. Will check out ITS Technologies bud what would...

Thanks That would mean the AC coupled battery would have to be at main board level and not in the loft as where i would like it to be. what kind of typical price am i looking at here and what is involved, thanks

Thanks for that , it didn't say in the manual but needed confirmation. I can't change the inverter to hybrid as i would probably need the installers to change over at cost. now what if i went the AC coupled battery, would that just connect into the existing inverter?. Thanks

HI guys / gals Got a 4kw PV system fitted with a Growatt 3.6 mtl-s inverter in the loft, my house faces South. System is only just over 1yr old. My question is can i fit storage batteries to my existing system in the loft and connect it to the Inverter for nighttime use instead of importing...