Guru
Joined: 15/07/2006
Location: AustraliaPosts: 676
| Posted: 11:56am 12 Jan 2011 |
Karl,
I'm not sure exactly what you want here.
40ah Thundersky batteries may be too small for use as a starter battery. I use a Thundersky 90ah x 12v to start my mower and it would have no problem starting a car. You can check the manufacturers specs here, http://www.thunder-sky.com/products_en.asp
Charging from a solar panel is no problem. I use 4 x 80W panels on my camper. The battery is Thundersky 200ah x 12v. This setup runs my own made 12v 80 litre fridge for 4 days, maybe 5 days, without charging. I could use a 90ah but I put in the 200ah because I also run an inverter to a cook top for cooking.
An Engel 40 litre could run for 3 days on a Thundersky 90ah.
http://www.engelaustralia.com.au/cgi-bin/faq.cgi?&faq=8
I have used these batteries for running an electric fence. It is great.
Gordon has a set of 90ah on his house solar and some others have bought them for their house solar as well.
These batteries would make a great dual battery setup.
For pricing, check my website. It does fluctuate with the exchange rate.
Trev @ drivebynature.com