Files

This document describes difference between MPPT and zerodrop chargers.

Found this and even though its related to the boating user its got a lot of info that may be useful.

Parallel lead-acid battery strings initially seem like the ideal solution, you can start with 1 inexpensive string, e.g. 4 batteries for a 48V system, and add more strings, maybe another 4, 8 or 12 batteries, at a later stage. Some people start off with 2 or more strings, but while it seems fine, it is not at all the best way to go.
This is a topic which surfaces regularly and I decided to put together this guideline to assist fellow forum members and to hopefully reduce the number of times this topic will be discussed in future.
It explains the caveats and hazards of incorrectly connected parallel battery strings and the complexity of battery balancer and battery monitor connections on parallel battery strings.
Hopefully PV solar newbies will find this document valuable and hopefully it will save them from ending up with multiple parallel battery strings and endless frustration.

AGM and Gel batteries

Part 1

The service manual off the Aus PIP 4048 thread.
This will help to identify real vs "fake" Axpert Inverters

Axpert MKS-MKS+ 1-5KVA manual 20160712

An attempt to simplfy Axpert Menu settings

Manual for Eastron sdm630 energy meter

meager
3KW SERVICE MANUAL
1-Phase 3kw Plus Hybrid Solar Inverter
OPTI SP3000 Premium

Guide published by Voltronic

Uploaded by Mark Maritz

Helps you with your Peukerts coefficient calculations, compliments of Victron.

If you want to compare, or use Victron MPPT controllers, here is a nice tool to match panels with controllers.
For it is quite a bummer to one day have panels but controller does not match, or controller and the panels you bought is mismatched.
Been there, done that, have the T-shirt. 

Here are a few solar sites that are nice to know of.

This calculator I got off the web for free. Credit to the author.
It starts by allowing you to capture your watts per item and how long you want the device/s to be on at night. This is rather crucial to know.
Then taking into account factors daylight hours for your area, losses, age of batteries, DOD, how many days backup you need, it calculates your battery bank requirements, gives you the minimum inverter size you need, as well as how many panels you would, depending on your preferred make and model, need.
It is good to then sit and change values like system volts, and see the impact. 
It is a good guideline.