Ummm I wouldn't advise using the panels without a regulator.

I have an an apology to make. The BCDC1220 is NOT a solar regulator (it has no solar regulation function) I thought it was the same as my BCDC1240 which is an MPPT solar reg. The lower amperage model that IS an MPPT solar regulator, DC to DC smart charger and battery isolator in one is the BCDC1225 - a 25 amp version of what I have. Sorry for causing any confusion folks.

http://www.ebay.com.au/itm/REDARC-BC...ht_1784wt_1348

http://www.redarc.com.au/images/uplo...d_02052012.pdf

http://www.redarc.com.au/images/uplo...ion_Manual.pdf

Cuppa