Leisure Batteries for Solar systems

[Juice]

If you can source them, use old secondhand forklift batteries.
They may have lost their 'high torque power' for use in forklifts but still have plenty (years) of life left in them for 'deep cycle' power usage and storage.
Built for purpose.

Find a company near you that hires out and repairs fork lifts, scissor lifts, cherry pickers.
There is one near me; they replace all batteries with new and weigh in/ scrap the old.

Also look out for a Ctek or equivalent battery charger/ re-conditioner
My Ctek has paid for it's self times over - I have not bought a new battery since.

Cheers Juice.