Recent content by andy_acacia

I tested each panel with my multimeter, unconnected to anything else and pointed South at about a 45deg angle. Conditions were overcast but not dark. <1a feels really poor

Thank you for a very clear answer. Much appreciated. I realise this is now a different question but what would be better at maintaining the battery bank, a parallel or 2s2p set up? I'm in the UK and it's very often overcast, as it is today. I've tested each panel before determining which way...

Thank you Samsonite for confirming the same answer as Culchee ? I had assumed the 2s2p and 4s2p acronym I'd seen in the forms was as you've now confirmed to me, so great to learn something new.

I would like some help with calculating theoretical voltage and current please. What is the max ( theoretical) voltage and amperage I will get from the following array where each panel max is 10a 40v 2 panels in series + 2 panels in series = ?a ?v I understand 4 in series would be 10a 160v...

I wanted to thank all those who took the time to answer my questions. Mike, Steve, Blakes and Matt, batteries recharged up using Victron ac charger. Batteries appear to be OK with no side effects following a full cycle recharge. Now to work out why the batteries drained so dramatically. This...

OK... I've bought a Victron AC charger. It has an equalise function and suggests it can revive a "dead" battery. I'll start with the equalise and go from there. Thank you for spending the time to pass on your knowledge. Much appreciated ?

I hope so! Now need to work out how to recharge the batteries without the MPPT and see if they are definitely OK. Mike has suggested an AC charger so I'll give this a go as soon as I've sourced something appropriate.

Thank you Mike for some useful steps to take. Much appreciated! I have a 12v car trickle charger but I assume this won't be powerful enough (max 70ah) and suspect is not what you're implying here. Would you mind advising a specific AC charger with the functionality mentioned? I can then do some...

Thank you Steve. Unbranded AGM batteries supplied by SunshineSolar.co.uk The MPPT is Epever 4210 40amp. Pics attached in original post. The Inverter is a 24v 1000w again supplied by SunshineSolar.co.uk It all came as a complete 24v off grid kit. The only addition is a Victron 500amp...

Thanks Matt. I'll leave the batteries charging with no load. If they get back up to normal voltage do I assume the batteries are OK? Severly reduced battery capacity after 2 years is ridiculous! Each battery cost me £400.

Good morning. For the last week I've been holed up in bed with plague-like symptoms. I've finally emerged and have gone to my off grid office. It is powered by 1220w solar array and 2 x 12v 200ah AGM batteries providing a 24v system. I left the power "on" for the last week. Nothing drawing...