I took the old batteries out over the winter as i wasnt happy with them on the last dive. I think one must have failed as one bank of four was not holding its charge. So, i have replaced them with eight WING ESL55-12. I also wired them different. The old ones were 2x batteries in parallel and then the 2 pairs connected in series. These i have done 2x pairs in series and each pair connected to the main terminals. This should mean i wouldnt lose the entire bank if one failed, i would still have the other pair.
Also changed the mounting bracket a little and fitted the lead ballast better.